Sophie: howto-text-ja-2006-5mdv2010.0 noarch

howto-text-ja-2006-5mdv2010.0.noarch.rpm

  Large Disk HOWTO
  Andries Brouwer, aeb@cwi.nl 
  v2.2j, 12 September 1999
  ½{ õñ hiramoto@nanako.or.jp ó
  2000N218úì¬

  fBXNÌWIgÆ1024V_§ÀÌ·×ÄB

  ±Ì¶ÌÅVo[WÍA www.win.tue.nl ðQÆµÄ¾³¢B (ó
  : IWiÌpêÅÌ±ÆBú{êÅÌÅVo[WÉÂ¢ÄÍ
  www.linux.or.jp ðQÆµÄ¾³¢)

  1.  âè

  á¦Î È½ª 1024 V_ð´¦éfBXNðÁÄ¢éÆµÜµå¤B
  »Ìã È½ªfBXN I/O Ì½ßÉÃ¢ INT13 BIOS C^[tF[Xð
  g¤ OS ðÁÄ¢éÆµÜµå¤B±êÍâèÅ·BÈºÈçA±ÌC^
  [tF[XÍ I/O ®ìÌV_wèÉ 10 rbgÌtB[hðg¤Ì
  ÅA 1024 ÔÈ~ÌV_ÉÍANZXÅ«È¢ÌÅ·B (ó: 2^10 =
  1024)

  K¢ALinux Í BIOS ðg¢Ü¹ñÌÅâè èÜ¹ñB

  ÜAÌñ_ð¢ÄÅ·ªB

  1. VXeN®ÉÍ Linux ÍÜ¾Ò®µÄ¢Ü¹ñÌÅA BIOS âè©ç
     ¦°çêÜ¹ñB±êÍ LILO â»êÉÞ·éu[g[_ÉÆÁÄâè
     ÉÈèÜ·B

  2. ¡Ì OS ÅêÂÌfBXNðg¢Üí·êAÇ±Ép[eBVª
      éÌ©A»ê¼êÌ OS ªµÁ©èc¬µÄ¢È¯êÎÈèÜ¹ñB¾
     ¢·¦éÆALinux Æ DOS ðêÂÌfBXNãÅgp·éêA¼ÒÍ¯
     ¶û@Åp[eBVe[uððß·éKvª èÜ·B±êÍ
     Linux J[lÆ fdisk ÉÆÁÄâèÉÈèÜ·B

     ÈºÉAÖA·éâèÌÚ×ð¦µÜ·BÈ¨AÍJ[lÌo[W
     2.0.8 ðQÆµÄ¢Ü·B¼Ìo[WÅÍµá¤©àµêÜ¹
     ñB

  2.  vñ

  Vµ¢åeÊfBXNðpÓµÜµ½BÇ¤·êÎ¢¢ñµå¤?  »¤A\
  tgEFAIÉÍAfdisk (cfdisk Ìûªæèæ¢) Åp[eBVðì¬
  µAmke2fs Åt@CVXeðìèA mount ÅVµ¢t@CVXeð
  t@CKwÉÇÁ·êÎ¢¢ñÅ·B

  ÅßÅÍåeÊn[hfBXNÉÂ¢ÄâèÉÈé±ÆÍÜ¸³¢ÌÅA±Ì
  HOWTO ðÇÞKvàÜ¸³¢Åµå¤BâèÌæ¤ÉvíêéàÌÌåª
  ÍAåeÊn[hfBXNðgp·éãÅâèÉÈé¾ë¤Æv¢ñÅfB
  XN}l[WðCXg[µ½èA fdisk ÌGLXp[g[hÉ¢Á
  ¿áÁ½èA¾¦IÉfBXNÌWIgð LILO âJ[lÌR}h
  CÅwèµ½è·é±ÆÉæÁÄø«N±³êÜ·B

  µ©µAT^IÈâèÍÈºÌæ¤ÈàÌÅ·B

  1. ¾ÃÌn[hEFAðgÁÄé

  2. ¯¶fBXNãÉ¢Â©Ì OS ðÚ¹é

  3. N®(XN«é)

     AhoCX:

  åeÊ SCSI fBXNÉÂ¢Ä: Linux Í¸ÁÆÌ©çT|[gµÄ¢Ü·B
  ÁÊÈ±Æð·éKvÍ èÜ¹ñB

  (8.4GB ðz¦éæ¤È) åeÊ IDE fBXNÉÂ¢Ä: ÅVÌÀèÅJ[l
   (2.0.34 ©»êÈ~)ðgÁÄ¾³¢BÊíÍ»êªêÔÅ·BÁ
  ÉABIOS É LBA ÈÇÌfBXN (WIg) Ï·ðvµÈ¢Æ¢¤«¾
  ÈIðªÅ«éæ¤ÈêÉÍB

  (33.8GB ðz¦éæ¤È) ÆÄàåeÊÌ IDE fBXNÉÂ¢Ä: ãqÌ
  ``34GB ðz¦éfBXNÅÌ IDE Ìâè'' ðQÆµÄ¾³¢B

  àµN®É LILO ªnOµ½çAÝèt@CÌ /etc/lilo.conf É
  ``linear'' àwèµÄ¾³¢B

  J[l/LILO/fdisk É¾¦IÉWIgð^¦é±ÆÉæèð·éæ¤
  ÈWIgÌâèÅ é©àµêÜ¹ñB

  Ã¢ fdisk ðgÁÄ¢ÄAp[eBVªdÈÁÄ¢é(``overlapping'')
  Æ¢¤xªo½ç: xÍ³·é©Acfdisk ðgÁÄ¾³¢(±¿çÌ
  ûªæ¢)B

  fBXNÌTCYª½©Ï¾Æv¤ÍAñiÆ\iÌ ``PÊ'' ð¬¯µÄ
  ¢È¢©mFµÄ¾³¢B»µÄAó«Ìæð²×é½ßÉ df ðgp·é
  ÍA df ÍÇãÌI[o[wbhÌ½ßÉóÌfBXNãÅàp[eB
  VTCYæèp[Zg¬³¢lðñ·é±Æðo¦Ä¨¢Ä¾³
  ¢B (ó: Ú×Í ``uâèÈµ: df æè fdisk Ìûªp[eBVª
  å«©¦év'' ÌÍðQÆµÄ¾³¢)

  ³A±êÅàÜ¾½©âèª éÆvíêéÌÈçÎA é¢Í È½ªP
  Émè½ªèâÈçÎAÈºàÇñÅ¾³¢B

  3.  PÊÆTCY

  1LoCg (kB) = 1000oCgB 1KoCg (MB) = 1000 kBB 1MKoC
  g (GB) = 1000 MBB 1eoCg (TB) = 1000 GBB±êÍ SI PÊnÅ·B
  µ©µA1 MB = 1024000oCgðKpµÄ 1.44 MB tbs[Æ\»µ½
  èA 1 MB = 1048576oCgÆl¦élª¢Ü·B±Ì¶ÅÍAñi@Ìû
  ð Ki, Mi, Gi, Ti Æ\»µÄA±êðWÆµÜ·B»¤·éÆAtbs
  [Í 1440 KiB (1.47 MB, 1.41 MiB) ÆÈèA 1 MiB =       1048576 oC
  g (1.05 MB) 1 GiB =    1073741824 oCg (1.07 GB) 1 TiB =
  1099511627776 oCg (1.1  TB) ÆÈèÜ·B

  ÜÁ½³µ¢±ÆÉAfBXNhCuÌ[JÍ SI PÊnÉ]¢\i@
  ðgÁÄ¢Ü·Bµ©µALinux ÌN®bZ[Wâ¢Â©Ì fdisk Ìæ
  ¤ÈvOÍñi@ð\»·é½ßÉ MB â GB Æ¢¤V{ðgpµ
  Ä½èAñi@Æ\i@ª²¿á¬ºÉÈÁÄ½èµÜ·BæÁÄA È½ª
  fBXNðÁ½É\L³êÄ¢½eÊæèàÀÛÌeÊÌûª¬³¢Æl
  ¦éOÉAÜ¸\i@Å(Ü½ÍPÉoCgPÊÅ)ÀÛÌTCYðvZµÄÝ
  Ä¾³¢B

  ñiPÊÌêåpêâÈª`ÉÖµÄÍA Knuth ÉãÄª èÜ·B KKB,
  MMB, GGB, TTB, PPB, EEB, ZZB, YYB ÆLqµÄA[W LoCg(large
  kilobyte), [W KoCg(large megabyte), ... [W ^oC
  g(large yottabyte( ÆÇÞÆ¢¤àÌÅ·BÞÍ±Ìæ¤É¢Ä¢Ü·:
  u¶ðñdÉµÄ¢éÌÍAñiÆ¢¤«¿ÆA (ó: 10iÅÌlæ
  è)å«¢«¿ðÃ¦µÄ¢éÌÅ·v±êÍæ¢ñÄÅ· - u[WMKo
  Cg (large gigabyte)vÍuMroCg (gibibyte)væè¹µâ·¢Å·
  ©çBµ©µÈªçAäXÌÚIÌ½ßÉ½¾êÂdvÈ±ÆÍAKoCg
  (megabyte) ª¿å¤Ç 1000000 oCgÅ é±Æð²·é±ÆÅAàµ½
  ©¼Ì±ÆðÓ¡·éÌÈçÎ¼ÌpêâÈª`ªKvÅ éÆ¢¤±ÆÅ
  ·B

  3.1.  ZN^TCY

  ±Ì¶ÅÍZN^Í 512 oCgÅ·B±êÍåïÌêÍ^Å·ªA¢
  ç©Ì MO fBXNÍ 2048 oCgÌZN^TCYðgpµÄ¢éÌÅ (ó
  : 640MB â 1.3GB(GIGAMO) Ì 3.5 C` MOEPDEDVD-RAM ÈÇªYµ
  Ü·)AÈºÌà¾É¨¢ÄÍÀÛÌeÊÍ 4{ÉµÄl¦éKvª èÜ
  ·B (±Ìæ¤ÈfBXNÉ fdisk ðgp·éÍAo[W 2.9i ©»
  êÈ~ðgpµA `-b 2048' IvVð^¦È¯êÎÈèÜ¹ñ)

  3.2.  fBXNTCY

  C V_AH wbhAS ZN^gbNÌfBXNÍASÌÅ C*H*S Z
  N^ð¿AC*H*S*512 oCgði[·é±ÆªÅ«Ü·Bá¦ÎAfBXN
  ÌxÉ C/H/S=4092/16/63 Æ©êÄ¢½çA±ÌfBXNÍ
  4092*16*63=4124736 ZN^ð¿A 4124736*512=2111864832 oCg (2.11
  GB) ði[·é±ÆªÅ«Ü·B 8.4GB æèåeÊÈfBXNÉÍ
  C/H/S=16383/16/63 ð^¦éÆ¢¤HÆKi (industry convention) ª é
  ÌÅA»Ìæ¤ÈfBXNÌTCYÍàÍâfBXN©çñ³ê½ C/H/S
  l©çÍÇÝæé±ÆÍÅ«Ü¹ñB

  4.  fBXNANZX

  fBXNÉÎµÄ½©ðÇÝ«·é½ßÉÍAá¦ÎZN^âubNÌÔ
  ð^¦éÈÇÌû@ÅAfBXNãÌÊuðwè·éKvª èÜ·BfB
  XNª SCSI fBXNÌêÍ±ÌZN^ÔÍ¼Ú SCSI R}hÉ·é±
  ÆªÅ«AfBXNÍ»êððµÜ·BfBXNª IDE fBXN Å LBA
  ðgpµÄ¢éêÍ SCSI ÌêÆÜ³É¯¶û@Å·Bµ©µfBXNª
  ÃARLL â MFM âALBA ãÈOÌ IDE ¾Á½è·éêÍAfBXNã
  Ìó]ÌÊuðwè·é½ßÉAfBXNÌn[hEFAÍ(V_Awb
  hAZN^Ì)OÂÌlðvµÜ·B

  jAioOÆ±ÌO³\LÌÎÍÌæ¤ÉÈÁÄ¢Ü·: C V
  _ H wbh S ZN^gbNðÂfBXNÉÆÁÄAO³Ü½Í
  CHS \LÉæéÊu (c,h,s) ÍAjAÜ½Í LBA \LÉæéÊu c*H*S +
  h*S + (s-1) Æ¯¶Å·B (}CiX 1 ·éRÍA±ÌO³\LÅÍ`
  IÉ 0 ÅÍÈ 1 ©çZN^ð¦nßé©çÅ·)

  »êä¦AÆÄàÃ¢ñ SCSI fBXNÉANZX·é½ßÉÍA»ÌWI
  gAÂÜè C,H,S Æ¢¤lðmÁÄ¢éKvª èÜ·B

  4.1.  BIOS ÉæéfBXNANZXÆ 1024 V_§À

  Linux Í BIOS ðgÁÄ¢Ü¹ñªA¢Â©Ì¼ÌVXeÍgÁÄ¢Ü
  ·B LBA ãÈOÌ BIOS ÍAüÍÆµÄ (c,h,s) ðv·é INT13 Æ¢
  ¤fBXN I/O [`ðñµÄ¢Üµ½B (æè³mÉ¢¤ÆAAH (
  WX^)ÅÀs·ét@NVðA CH ÅV_ÌºÊ 8rbgðA
  CL Ì 7-6 rbgÅV_ÌãÊ 2rbgðA5-0rbgÅZN^ðA
  DH ÅwbhðA»µÄ DL ÅhCuio[(80h © 81h)ðwèµÜ
  ·B±êÍp[eBVe[uÌÝvÌÍÅà¾µÄ¢Ü·B)

  ©µÄA10 rbgÌV_A8 rbgÌwbhA»µÄ 6 rbgÌ
  gbNZN^(1-63 ÌlðÆé)©çÈé 3 oCgÉ CHS ÍGR[h
  ³êÜ·BÂÜèV_Í 0 ©ç 1023 ÌlðÆé±ÆªÅ«A 1024
  V_æèãÍ BIOS ÅÍ\»Å«È¢Æ¢¤±ÆÉÈèÜ·B

  DOS â Windows (ó: Windows95 ÈOÌ Windows 3.1 )Æ¢Á½\tg
  EFAÍA LBA ðT|[gµ½ IDE fBXNª±ü³ê½ÉàÏX³êÜ
  ¹ñÅµ½ÌÅAfBXNWIgðKvÆµ±¯Üµ½B»êÍA(LBA
  ðgÁ½) ÀÛÌfBXN I/O ÌÛÉÍ(WIgÍ) àÍâKvÅÈ¢É
  àÖíç¸A BIOS ðÊ¶ÄÌÝfBXN I/O ðsÁÄ¢½©çÅ·B±ê
  Í³çÉA¡ÌfBXNðgÁÄ¢ÄàA BIOS Æïb·éæ¤Èêâ¼
  Ì OS ªKvÆ·éêÉÍA Linux àWIgðKvÆ·é±ÆðÓ¡
  µÜ·B
  ±ÌóÔÍ 4Nç¢OÜÅ±¢Ä¢ÄA INT13 t@NVÅµ¦È¢
  TCYÌfBXN (ÂÜè (c,h,s) Ì½ßÌ 10+8+6=24rbgÅÍ 8.5GB È
  ãðµ¦È¢) ªsêÉoêµAVµ¢ BIOS C^[tF[XªfUC³
  êÜµ½B»êÍg£ INT13 t@NVÆÄÎêAâÎubNÅn
  Üé 8oCgðÜÞ 16oCgÌfBXNAhXpPbgð DS:SI ªw·Æ
  ¢¤àÌÅ·B

  Microsoft Ì¢Eª±êçÌg£ INT13 t@NVÉÚs·éÌÍñí
  Éx¢Å· (ó: Windows95 È~ÅÍÎµÄ¢Ü·)B¨»çufBX
  NWIgvÆ¢¤RZvgÍ ÆNÍKvÅµå¤B

  4.2.  BIOS Æ IDE ÌuÇv(ãÀ)Ìðj

     ATA dl (IDE fBXNp) - 137 GB ÜÅ
        65536 V_ (0-65535 ÌÍÍ)A16 wbh (0-15 ÌÍÍ)A 255
        ZN^gbN (1-255 ÌÍÍ) ÜÅµ¦Ü·BæÁÄÅåÅ
        267386880 ZN^ÌeÊª è(512 oCgPÊÅ)A 136902082560 o
        Cg (137 GB) ÉÈèÜ·B±êÍ(¼ï1999NÌ_ÅÍ)Ü¾âèÆ
        ÍÈÁÄ¢Ü¹ñªA ÆNàµ½çâèÉÈé©àµêÜ¹ñB

     BIOS Int 13 - 8.5 GB ÜÅ
        1024 V_ (0-1023 ÌÍÍ), 256 wbh (0-255 ÌÍÍ), 63 Z
        N^gbN (1-63 ÌÍÍ) ÜÅµ¦Ü·BæÁÄÅåÅ
        8455716864 oCg (8.5 GB) ÉÈèÜ·B±êÍ¡úÅÍ[È§À
        ÅA DOS ÅÍ¡úÌåeÊfBXNªg¦È¢±ÆðÓ¡µÄ¢Ü
        ·B

     528 MB ÌÇ
        BIOS Int 13 R[Æ IDE fBXN I/O Ì¼ûÉ¯¶ c,h,s Ìlð
        gÁ½êA¼ûÌ§ÀªgÝí³êA 1024 V_E16 wb
        hE63 ZN^gbNÜÅµ©gpÅ«¸AÅåeÊÍ 528482304
        oCg (528MB) ÆÈèÜ·B±êª DOS ÆÃ¢ BIOS ÌgÝí¹É
        æé«¼¢ 504MiB ÌÇÅ·B±êÍ 1993N²ëÉâèÆÈèAl
        XÍ·×ÄÌíÞÌØÄñÉi¦Üµ½B·Èí¿n[hEF
        A(LBA)At@[EFA(BIOSÉæéÏ·)A»µÄ\tgEFA(fB
        XN}l[W)Å·BuÏ·vÌTOÍ 1994NÉÅÁ¿ °çêÜµ
        ½: BIOS ÍAhCuÆïb·éÌWIgÆA»êÆÍÙÈ
        éAUÌA DOS Æïb·éÌWIgðg¢A»µÄ»Ì 2ÂÌ
        ÔÅÏ·ðs¢Ü·B

     2.1GB ÌÇ (1996N 4)
        ¢Â©ÌÃ¢ BIOS ÅÍAV_ði[·é½ßÌ CMOS RAM à
        ÌtB[hð 12 rbgªµ©mÛµÄ¢Ü¹ñB»Ì½ßA±Ì
        ÍÅåÅà 4095 ÈºÆÈèA½Á½ 4095*16*63*512=2113413120
        oCgµ©ANZXÅ«ÈÈèÜ·BåeÊfBXNðÚ±µ½
        ÉAu[gÉnOµ½è·éÆ¢¤e¿ªoÜ·B±Ì§ÀÉæÁ
        ÄA©¦ÁÄ 4092/16/63 Æ¢¤WIgðÂfBXNªêÊIÉ
        ÈèÜµ½B»µÄ¡úÅàA½ÌfBXNhCuª 4092/16/63
        É©¹©¯é½ßÌWpðÁÄ¢Ü·B over2gb.htm àQÆµ
        Ä¾³¢B»Ì¼Ì BIOS ÍnOÍµÜ¹ñªA2.5 GB Ìãíè
        É 429 MB Æ¢Á½æ¤ÉñíÉ¬eÊÈfBXNÆµÄoµÄµÜ
        ¢Ü·B (ó: ÂÜè±ÌáÅÍAãLÌ 2113413120 ÅÁ½è]
        ªfBXNÌeÊÆµÄo³êÄ¢éí¯Å·)

     3.2 GB ÌÇ
        ±êÍ Phoenix BIOS t@[EFAÌ 4.03 Æ 4.04 ÌoOÅA
        3277 MB ðz¦éeÊÌhCuðq¢Å CMOS ZbgAbvðs¤Æ
        VXeªbNµÄµÜ¢Ü·B over3gb.htm ðQÆµÄ¾³
        ¢B

     4.2 GB ÌÇ (1997N 2)
        PÈ BIOS Ï· (ECHS=g£(Extended)CHSAµÎµÎ `Large disk
        support' â é¢ÍPÉ `Large' ÆÄÎêÜ·)ÍAwbhð 2{
        µV_ð¼ªÉ·éÆ¢¤®ìðA DOS ©ç©¦éV_
        ª 1024 ÈºÉÈéÜÅJèÔµÜ·B»Ý DOS Æ Windows 95 Í
        256 wb_ðµ¦Ü¹ñµAêÊIÉfBXNÍ 16 wbhÅ éÆ
        ¦éÌÅA±êÍÂÜè±ÌPÈJjYª
        8192*16*63*512=4227858432 oCg(UÌWIgÍ 1024 V
        _E128 wbhE63 ZN^/gbN) ÜÅµ©®ìµÈ¢±ÆðÓ¡
        µÜ·B ECHS ÍZN^gbNÌÍÏXµÈ¢±ÆÉÓµÄ
        ¾³¢B»µÄ±êª 63 ÅÍÈ¢êÍ§ÀÍàÁÆ«ÂÈèÜ
        ·B over4gb.htm ðQÆµÄ¾³¢B

     7.9 GB ÌÇ
        ÅÉwbhð 15 É²®·é±ÆÅãLÌæ¤Èâè (ECHS ð
        KµÄ¾³¢)ðð¯é±ÆÌÅ«éµ«¢ BIOS ÍA»êÉæÁ
        Ä 240 wbhÜÅÌUÌWIgð¾é±ÆªÅ«éÌÅA
        1024*240*63*512=7927234560 oCgÜÅLøÆÈèÜ·B

     8.4 GB ÌÇ

        ÅãÉABIOS ªÂ\ÈÀèÌÏ·É¬÷µA 255 wbhÆ 63 ZN^
        gbNðg¤Æ (`assisted LBA'  é¢ÍPÉ `LBA' ÆÄÎê
        é)A 1024*255*63*512=8422686720 oCgÜÅBÅ«Ü·B 8.5GB
        §ÀÌ¿åÁÆèOÅ·ªA±êÍ 256 wb_ÌWIgðð¯È
        ¯êÎÈçÈ¢©çÅ·B (±ÌÏ·ÍÜ¸AfBXNeÊª
        1024*H*63*512 ÉûÜéæ¤Éwbh H ð 16, 32, 64,128, 255 ©
        çIÑAÉeÊð (H*63*512) ÅÁÄV_ C ðvZµÜ
        ·B)

     33.8 GB ÌÇ (1999N 8)

        Ìn[hÍ 33.8GB ðz¦éTCYÅKêÜµ½B±ÌâèÍAf
        tHgÌ 16 wbh 63 ZN^gbNÅÍAV_ª short
        int É[ßé±ÆªÅ«È¢ 65535 æèå«¢ÉÈÁÄµÜ¤±Æ
        Å·B¡úÅÍAÙÆñÇÌ BIOS ª»Ìæ¤ÈfBXNðµ¦È¢Å
        µå¤B (á¦Î³íÉ®ì·éVµ¢tbV(ROM)ÌC[Wð
        ¾éÉÍ Asus upgrades ðQÆµÄ¾³¢) 2.2.14 / 2.3.21 æè
        Ã¢ Linux J[lÅÍpb`ªKvÅ·BãqÌ ``34 GB ´ÌfB
        XNÉ¨¯é IDE Ìâè'' ðQÆµÄ¾³¢B

  ±ÌgsbNÉÂ¢ÄÌ»Ì¼Ìc_ÉÂ¢ÄÍA Breaking the Barriers
  ðQÆµÄ¾³¢B³çÉÚ×ÉÂ¢ÄÍA IDE Hard Drive Capacity
  Barriers ðQÆµÄ¾³¢B

  8.4 GB ðz¦én[hfBXNÍA©ªÌWIgð 16383/16/63 Æ¦
  éÆvíêÜ·B±êÍv·éÉuWIgvÆ¢¤àÌªãxêÅ é
  ±ÆðÓ¡µAfBXNÌeÊÍàÍâWIg©çÍvZÅ«Ü¹ñB

  5.  u[g

  VXeðu[g·éÆA BIOS ÍêäÚÌfBXN(Ü½Ítbs[â
  CDROM)©çZN^ 0 (MBR - Master Boot Record ÆµÄmçêÄ¢é)ðÇÝ
  oµA»±É éR[h - ÊíÍ½ç©Ìu[gXgbv[_ - ÖW
  vµÜ·B±Ì¬³Èu[gXgbvvOÍÊÍ»ê©gÌfB
  XNhCoÍÁÄÈ BIOS T[rXðpµÜ·B±êÍALinux J[
  lªÅÌ 1024 V_àÉ®SÉûÜÁÄ¢éÌÝu[gÂ\Å é
  ±ÆðÓ¡µÜ·B

  ±ÌâèÍÆÄàÈPÉðÅ«Ü·: BIOS ªANZXÂ\ÈfBXN - ¨
  »çêäÚ©ñäÚÌfBXN - ÌÅÌ 1024 V_àÉ®SÉûÜ
  ép[eBVÉAJ[l(ÆALILO Ì}bvt@CÌæ¤Éàµ©µ
  ½çu[gAbvÌÅÉgp³êé©àµêÈ¢¼Ìt@C) ðzu·ê
  Î¢¢ÌÅ·B

  µ½ªÁÄAJ[lpÌÌæÆµÄ 10 MB ç¢Ì¬³Èp[eBV
  ðAêäÚ©ñäÚÌfBXNÌæª©ç 1024 V_àÉ®SÉûÜéæ
  ¤Éì¬µÄ¾³¢B±êð /boot ÆµÄ}EgµA LILO ª±±ÉJ
  [lðuæ¤ÉµÄ¾³¢B

  5.1.  LILO Æ `linear' IvV

  à¤êÂÌÓ_ÍAu[g[_Æ BIOS ªfBXNWIgÉÂ¢ÄÓ
  ©ªêvµÄ¢éKvª é±ÆÅ·B LILO ÍWIgÉÂ¢ÄJ[l
  Éâ¢í¹Ü·ªAfBXNhCoÌìÒÌå½ÍA BIOS ªgp·é
  Å ë¤ LILO ª°élÌãíèÉAp[eBVe[u©çWIg
  ð¾éÆ¢¤«¢Èðó¯p¢Å¢Ü·Bµ½ªÁÄAJ[l©ç³
  êéWIgÍµÎµÎðÉ§¿Ü¹ñB±Ìæ¤ÈêALILO É
  `linear' IvVð^¦Üµå¤B±ÌøÊÍAu[g[_ÌCXg
  [É LILO ªWIgîñðKvÆ¹¸ (}bvÉjAAh
  X(ó: Ì¤¿ºÊ 24bit)ði[·é)Aµ©µu[gÉjAAhX
  ðÏ··éAÆ¢¤àÌÅ·B½Ì±êªftHgÅÍÈ¢ÌÅµå¤?
  »¤Å·ËAêÂsïª éÌÅ·: `linear' IvVðt¯é
  ÆALILO ÍV_ðméKvªÈÈèAµ½ªÁÄJ[lÌêª
  1024V_§Àðz¦Äi[³êÄàxðo³ÈÈèAµÜ¢ÉÍu[
  gµÈ¢VXeªoÄIíéÂ\«ª éÌÅ·B

  5.2.  1024 V_ª 1024 V_ÅÍÈ¢

  Tim Williams Í±¤¢ÁÄÜ·: uÍ Linux Ìp[eBVðÅÌ
  1024 V_ÈàÉì¬µÜµ½ªA»êÅàÈ¨N®µÜ¹ñÅµ½B1GB
  ÈàÉÚ®µ½çâÁÆ®«Üµ½BvÇ¤µÄÈñÅµå¤?  »¤A±ê
  Í AHA2940UW Rg[ÉÚ±³ê½ SCSI fBXNÅA±ÌRg[
  Ít@[EFAÆ BIOS ÌÝèIvVÉË¶µÄ H=64, S=32 (1V
  _Í 1 MiB = 1.05 MB ÉÈé)©A H=255, S=63 (1V_Í 8.2 MB É
  Èé)ÌÇ¿ç©gpµÜ·BÔá¢È BIOS ªOÒÌÝèÉÈÁÄ¢ÄA
  æÁÄ 1024 V_§Àª 1 GiB ÉÈÁÄ¢Ü·Bµ©µ Linux ªãÒÌ
  lðgÁÄ¢éÔÍ LILO Í§Àª 8.4GB Å éÆvÁÄ¢éí¯Å·B

  6.  fBXNWIgAp[eBVAd¡(overlap)

  fBXNãÉ¢Â©Ì OS ª¶Ý·éêA»ê¼êÌ OS ÍêÂ©»êÈ
  ãÌfBXNp[eBVðgpµÜ·B±êçÌp[eBVÌsêv
  ÍjÅIÈÊðà½ç·±Æª èÜ·B

  MBR ÉÍ(î{)p[eBVªÇ±É¶Ý·é©ðLqµ½p[eBV
  e[uª¶ÝµÜ·B 4ÂÌî{p[eBVÌ½ßÉ 4ÂÌe[uÌ
  Ggª èA»êÍÈºÌæ¤ÉÈÁÄ¢Ü·B

       struct partition {
               char active;    /* 0x80: u[gÂ, 0: u[gsÂ */
               char begin[3];  /* ÅÌZN^Ì CHS */
               char type;
               char end[3];    /* ÅãÌZN^Ì CHS */
               int start;      /* 32 bit ÌZN^Ô (0 ©ç¦nßé) */
               int length;     /* 32 bit ÌZN^ */
       };

  (CHS Í V_/wbh/ZN^ð\µÜ·B)

  ±ÌîñÍç·Å·: 24rbgÌ begin ¨æÑ end tB[hÉæÁÄÆA
  32rbgÌ start ¨æÑ length tB[hÉæÁÄÌ¼ûÅAp[eB
  VÌÊuª^¦çêÄ¢Ü·B

  Linux Í start Æ length ÌtB[hÌÝðgp·éÌÅA»êä¦É
  2^32 ZN^ÜÅÌp[eBVðæèµ¤±ÆªÅ«Ü·BÂÜèA2 TiB
  (= 2048 GiB) Ìp[eBVÅ·B±êÍ»ÝpÅ«éfBXNÌ 100
  {ç¢å«¢ÌÅA Æ 8NÔç¢ÍåävÅµå¤B (»¤Ap[eB
  VÍñíÉå«Å«Ü·Bµ©µ[È§Àª èÜ·B©RÈ®ª
  32bit Ìn[hEFA(ó: á¦Î CPU ª Intel x86 nÌ}V) ãÌ
  ext2 t@CVXeãÅÍA 2 GiB ÈãÌt@CÍì¬Å«È¢ÌÅ
  ·B)

  DOS Í begin Æ end tB[hðgpµAfBXNANZXÌ½ßÉ BIOS
  INT13 R[ðgpµÜ·ÌÅA BIOS Ï·ðgÁÄà 8.4GB ÈºÌfBX
  Nµ©§äÅ«Ü¹ñB (FAT16 t@CVXeÌ§ÀÉæèAp[eB
  VÍ 2.1GB æèå«Å«Ü¹ñB) ¯¶±Æª Windows 3.11EWfWG
  (Windows for WorkGroup)E Windows NT 3.* Éà¢¦Ü·B

  Windows 95 Íg£ INT13 C^[tF[XðT|[gµÄ¨èAp[eB
  Vð»Ìû@ÅANZX·éKvª é±Æð¦·½ßÌÁÊÈp[eB
  V^Cvðg¢Ü·(b, 6, 5 ÌãíèÉ c, e, f)B±êçÌp[eB
  V^CvªgíêÄ¢éêA begin Æ end tB[hÉÍ_~[Ìî
  ñ (1023/255/63) ªi[³êÜ·B Windows 95 OSR2 ©çÍ FAT32 t@C
  VXe (p[eBV^CvÍ b Ü½Í c)ª±ü³êA 2 TiB ÜÅ
  Ìp[eBVðì¬Å«Ü·B

  ÀÛÉÍ½à«È¢ÌÉud¡(overlapping)vp[eBVÉÂ¢Ä
  fdisk ©ç½í²Æð·©³êéÌÍÈºÅµå¤?  âêâê - ½©u«
  ¢vÌÅ·: DOS ªµÄ¢éæ¤ÉA»Ìp[eBVÌ begin Æ end
  tB[hð©½êA»êªI[o[bvµÄ¢éÌÅ·B (»µÄ»ê
  Í³µ èÜ¹ñBÈºÈç»êçÌtB[hÍ 1024 ÈãÌV_
  ði[·é±ÆªÅ«Ü¹ñ - 1024 V_ÈãÌªðg¤ÆAíÉI[
  o[bvª¶·éÌÅ·B) µ©µALinux âAp[eBV^Cvª
  c, e, f Å ép[eBVÌêÉ Windows 95 ªµÄ¢éæ¤ÉA
  start Æ length tB[hð©éêÉÍA»êÍÜÁ½âè èÜ¹
  ñB»¤Acfdisk ª[¾µÄ¢Ä Linux Åµ©fBXNðgíÈ¢ÌÈç
  ÎAxÍ³µÄ¾³¢BDOS Æ¤LµÄ¢éêÍÓµÄ¾³¢B
  /dev/hdx Ìp[eBVe[uð©éÉÍ cfdisk -Ps /dev/hdx Æ
  cfdisk -Pt /dev/hdx R}hðgÁÄ¾³¢BB

  7.  Ï·ÆfBXN}l[W

  (wbhAV_AgbNÆ¢¤æ¤È) fBXNWIgÍ
  MFM â RLL ãÌY¨ÅAÍ¨IÈn[hEFA\¢ð½fµÄ¢Ü
  µ½B»ÝÅÍAIDE Åà SCSI ÅàAfBXNÌu{ÌvWIgÉÂ
  ¢Ä»¡ðÂlÍ¢Ü¹ñBÀÛÌÆ±ëA1gbN ½èÌZN^Í
  ÂÏÅAfBXNÌOüÌûªæèZN^ª½ÈÁÄ¢Ü·BÂÜèAê
  ÓÉÜéæ¤Èu{Ìv 1gbN ½èÌZN^Æ¢¤àÌÍ¶Ýµ
  Ü¹ñB»êÆÍÜéÁ«è½ÎÉ: IDE R}h INITIALIZE DRIVE
  PARAMETERS (91h) Í»ÝÅÍAwbhÆ 1gbN ½èÌZN^ðÇ
  ê¾¯ÁÄ¢é±ÆÉÈÁÄ¢é©ðfBXNÉÝè·é½ßÉñ³êÄ
  ¢Ü·B¡ÌåeÊfBXNªÀÛÉÍwbhð 2Âµ©ÁÄ¢ÈÄà
  BIOS ÉÎµÄÍ 15 © 16 wbhÅ éÆñµ½èAÜ½ BIOS ª[U
  Ì\tgEFAÉÎµÄ»êð³çÉ 255 wbh¾Æñµ½è·éÌÍA
  ²ÊÅ·B

  [U[ÉÆÁÄÅPÈÌÍAfBXNãÉ ½©àê¼üÉZN^ÔªÀ
  ñÅ¢é(0, 1, ...)ÆµÄfBXNãÌÇ±ÉZN^ª¶Ý·é©Æ¢Á½
  ±Æðt@[EFAÉC¹çêé±ÆÅ·B±ÌjAioOÍ LBA
  ÆÄÎêÜ·B

  TOÍÈºÌÊèÅ·B DOS â¢Â©Ìu[g[_Í (c,h,s) \Lð
  gÁÄ BIOS ÆïbµÜ·B BIOS ÍA[Uªgp·éUÌWIgð
  gÁÄ (c,h,s) ð LBA \LÉÏ·µÜ·BfBXNª LBA ðó¯t¯éê
  ÍA±ÌlðfBXN I/O ÉgpµÜ·B³àÈ¯êÎAfBXNªgÁ
  Ä¢éWIgðgÁÄ (c',h',s') ÉÏ·µ¼µAfBXN I/O Ég¢
  Ü·B

  `LBA' Æ¢¤\»ÌgpÉ¨¯é¿åÁÆµ½¬ª é±ÆÉÓµÄ¾
  ³¢: fBXNÌ«\ðLq·épêÆµÄÈçÎ `Linear Block
  Addressing' (CHS AhbVOÌt)ðÓ¡µÜ·BBIOS ÝèÅÌpêÆ
  µÄÈçÎAµÎµÎ `assisted LBA' ÆÄÎêéÏ·û®ðÓ¡µÜ·B -
  OqÌ ```8.4 GB ÌÇ''' ð©Ä¾³¢B

  (ó: n[hfBXNÌ)t@[EFAª LBA ððµÈ¢¯ÇA BIOS
  ªWIgÏ·ðpÅ«éêÍA½æ¤È±ÆªN«Ü·B (BIOS
  ÝèÅÍ±êÍµÎµÎ `Large' Æ\¦³êÜ·B) ¡ABIOS ª OS ÉWI
  g (C,H,S) ð¦µÄAfBXNRg[Æb·É (C',H',S') ð
  g¤ÆµÜ·BÊíÍ S=S', C=C'/N, H=H'*N ÆÈèÜ·B N ÍAC' <=
  1024 ÆÈéÅà¬³¢ 2 ÌæÅ·B (±êÍAC' = C/N Æ·éÛÌÛ
  ß(ØÌÄ)ÉæÁÄ³ÊÉÈéeÊðÅ¬ÀÉ·é½ßÅ·B) ³çÉA±Ì
  û@ÅÍ 8.4GB (7.8 GiB) ÜÅANZXÅ«Ü·B

  (BIOS Ì OÂÚÌÝèIvVÍÊí `Normal' ÆÄÎêAÇñÈÏ·à
  s¢Ü¹ñB)

  BIOS Å `Large' â `LBA' ðpÅ«È¢êÍA\tgEFAÉæéð
  û@à èÜ·B OnTrack â EZ-Drive Ìæ¤ÈfBXN}l[WÍ BIOS
  ÌfBXN§ä[`ð©ª©gÌàÌÆu«·¦Ü·BÊ±êÍAfB
  XN}l[WÌR[hð MBR Æ»êÉ±ZN^ (OnTrack ÅÍ±ÌR[
  hð DDO: Dynamic Drive Overlay ÆÄñÅ¢Ü·) Ézu·é±ÆÅÀ»³
  êÄ¨èA¼Ì·×ÄÌ OS ÌOÉN®³êÜ·BfBXN}l[WªC
  Xg[³êÄ¢éÅA OS ðtbs[©çN®·éÆA½©âèª é
  ©àµêÜ¹ñB

  fBXN}l[WÌøÊÍ½©êÈ©ê BIOS ÉæéÏ·Æ¯¶Å· -
  µ©µÁÉA¯¶fBXNãÅ¢Â©ÌÙÈé OS ð®ì³¹éÆAfBX
  N}l[WÉR·é½ÌguªN«éÂ\«ª èÜ·B

  Linux Í OnTrack Disk Manager Ìo[W 1.3.14 ©çÆA EZ-Drive Ì
  o[W 1.3.29 ©çðT|[gµÄ¢Ü·BÚ×ðÈºÉq×Ü·B

  8.  IDEfBXNÌ½ßÌJ[lÅÌfBXNÏ·

  Linux J[lª IDE fBXNãÉ½ç©ÌfBXN}l[WÌ¶Ýð
  oµ½êA»ÌfBXN}l[Wª·éÌÆ¯¶û@ÅfBXNðÄ}b
  vµæ¤Æ·éÌÅALinux Íá¦Î OnTrack â EZ-Drive ðgÁÄ¢é
  DOS Ìæ¤É¯¶fBXNp[eBVð©é±ÆÉÈèÜ·Bµ©µAW
  Igª(ó: LILOÌ)R}hC©çwè³ê½êÍÄ}bvÍs
  íêÜ¹ñ - ÂÜè `hd=cyls,heads,secs' (ó: `hdx=cyls,heads,secs'
  ª³µ¢) Æ¢¤R}hCIvVÍfBXN}l[WÆÌÝ·«
  ð¸í¹ÄµÜ¢Ü·B

  Ä}bvÍAC <= 1024 ÉÈé© H = 255 ÉÈéÜÅA (H*C ªêèÅ é
  æ¤É) wbh(H)ð 4, 8, 16, 32, 64, 128, 255 ÆâµÄ¢«Ü·B

  Ú×ÍÈºÌæ¤ÉÈèÜ· - ÈºÌTuZNVÌè¼Íu[g}l[
  WÉÎ·éÆvíêé¶ñÅ·BÈ~Ap[eBV^CvÍ·×Ä
  16 iÅ çíµÜ·B

  8.1.  EZD

  ÅÌî{p[eBV^Cvª 55 Å éÆ«A EZ-Drive ª¶Ý·éÆ
  »f³êÜ·BWIgÍãÅà¾µ½æ¤ÉÏ·³êAZN^ 0 É é
  p[eBVe[uÍ³³êÜ·B»ÌãíèÉAp[eBVe[
  uÍZN^ 1 ©çÇÝo³êÜ·BfBXNÌubNÔÍÏX³êÜ
  ¹ñªAZN^ 0ÖÌ«ÝÍAZN^ 1 ÖÌ«ÝÉ§³êÜ·B
  ±ÌUé¢ÍAide.c (ó: J[l 2.2.12 ÅÍ drivers/block/ide.h)
  ÌÅ
   #define FAKE_FDISK_FOR_EZDRIVE  0 ÆµÄJ[lðÄ\z·êÎØèÖ
  ¦çêÜ·B

  8.2.  DM6:DDO

  (êäÚÌhCuÌ)ÅÌî{p[eBV^Cvª 54 Å éÆA
  OnTrack fBXN}l[WªgÝÜêÄ¢éÆ»f³êÜ·BWIg
  Í·ÅÉq×½û@ÅÏ·³êAfBXNSÌª 63 ZN^ª¸ç³êÜ·
  (ÂÜèA³XÌZN^ 63 ÍZN^ 0 ÆÄÎêé±ÆÉÈèÜ·)B±Ì
  ÊAVµ¢(p[eBVe[uðÜÞ) MBR ÍAVµ¢ZN^ 0 ©çÇ
  ÝÜêÜ·Bà¿ëñA±Ì¸çµÍ DDO Ì½ßÌóÔðmÛ·é½ß
  ÅA±êªêäÚÌfBXNÈOÉÍ¸çµªüçÈ¢RÅ·B

  8.3.  DM6:AUX

  (êäÚÌfBXNÈOÌ)î{p[eBVª^Cv 51 © 53 ÌÆ«É
  ÍA OnTrack fBXN}l[Wªø¢Ä¢éÆ»f³êÜ·BWIg
  ÌÏ·ÍãÉq×½ÊèÅ·B

  8.4.  DM6:MBR

  Ã¢ OnTrack fBXN}l[WÍAp[eBV^CvÅÍÈVOl
  `Åo³êÜ·B (oû@: MBR ÌoCg 2,3 É éðItZbg
  Æl¦A±ÌItZbglª430ÈºÅ é©mFµÜ·BÉ±ÌItZb
  gÊuÉ é short int lª 0x55AA ÅAÈ¨©ÂAÌ 1 oCgªï©
  Ç¤©ðÄ¸µÜ·B) Ï·û@ÍAãÉq×½ÊèÅ·B

  8.5.  PTBL

  ÅãÉAî{p[eBVÌ start Æ end Ìl©çAÏ·ªsíêÄé±
  Æðméû@ª é±Æð²ÐîµÜµå¤BàµA ép[eBVª
  start Æ end É»ê¼êZN^Ô 1 Æ 63 ðÁÄ¢ÄA³çÉ end Ì
  wbhÔÆµÄ 31, 63, 127, Ü½Í 254 ðÁÄ¢éÆ·éÆAp[
  eBVÌIíèÍV_«EÉ¨©êéµKÅ é±ÆA IDE C^
  [tF[XÍÅå 16 wbhÅ é±Æ©çA BIOS ÉæéÏ·ª¨±Èíê
  Ä¢é±Æªª©èAÜ½AWIgÍwbh 32, 64, 128, Ü½Í 255
  ðgÁÄÄ}bv³êÄ¢é±Æªª©èÜ·Bµ©µA»ÝÌWIgª
  ·ÅÉgbN ½è 63 ZN^ÅA½³ñÌwbhª éÆ¢¤ÈçAÏ
  ·Ís¢Ü¹ñ (wbhª½³ñ éÆ¢¤ÌÍA·ÅÉÏ·ªsíêÄ¢
  éÆ¢¤±ÆÅ·©ç)B

  9.  _

  ÇÇ¤¾Æ¢¤ÌÅµå¤? Linux pÒÉÆÁÄÍê_¾¯ªdvÅ·B
  »êÍALILO Æ fdisk ª³µ¢WIgðgíÈ¯êÎÈçÈ¢±ÆÅ
  ·B±±ÅÌu³µ¢vÆÍAfdisk ÉÖµÄÍ¯¶fBXNãÌ¼Ì OS ª
  »ÌWIgðgpµÄ¢éÆ¢¤Ó¡Å èAÜ½ LILO ÉÖµÄÍN®
  É BIOS ÆâèæèµÄN®ª¬÷·éWIgÅ éÆ¢¤±ÆÅ
  ·B(ÊÍ±Ì 2ÂÍêvµÜ·B)

  fdisk ÍAÇ¤âÁÄWIgð²×éÌÅµå¤?  HDIO_GETGEO ioctl
  ðgpµÄJ[lÉâ¢í¹éÌÅ·Bµ©µApÒÍÎbIÉA é
  ¢ÍR}hC©çWIgð§Å«Ü·B

  LILO ÍAÇ¤âÁÄWIgð²×éÌÅµå¤?  HDIO_GETGEO ioctl ð
  gpµÄJ[lÉâ¢í¹éÌÅ·Bµ©µApÒÍ /etc/lilo.conf
  àÌ "disk=" IvVðgÁÄAWIgð§Å«Ü·
  (lilo.conf(5) ðQÆµÄ¾³¢)B linear IvVð LILO Éwè·
  é±ÆàÅ«Ü·B»ÌêALILO Í CHS AhXÌãíèÉ LBA Ah
  Xð}bvt@CÉi[µAN®·éÆ«É»êðgpµÜ·B (hCu
  ÌWIgðâ¢í¹é½ßÉ INT 13 Ìt@NV 8 ðg¢Ü·)

  J[lÍ(fdisk â LILO Éu©ê½)ðÇ¤âÁÄ²×éÌÅµå¤©?
  ¦¦ÆA¨»çè®©AÜ½Í J[lÉ»Ìæ¤ÈIvVðn·æ
  ¤Éu[g[_É¿â³êÄAÅÉpÒª `hda=cyls,heads,secs' Æ
  ¢¤J[lR}hCIvV(bootparam(7) ðQÆÌ±Æ) ÉæÁ
  Ä¾¦IÉ±êðwè·é©àµêÜ¹ñBá¦ÎA/etc/lilo.conf àÉ
  `append = "hda=cyls,heads,secs"' Æ¢¤æ¤ÈsðÇÁ·é±ÆÉæèA
  »Ìæ¤ÈIvVð LILO É^¦é±ÆªÅ«Ü·(lilo.conf(5) ðQÆ
  Ì±Æ)BÅÈ¯êÎAJ[lÍ BIOS ©n[hEFA©çæ¾µ½lð
  gÁÄ½Æ©µÄÊ·éÅµå¤B

  (Linux 2.1.79 ©çÍ) /proc t@CVXeðgp·é±ÆÉæÁÄWI
  gÉÂ¢ÄÌJ[lÌ©ððÏX·é±ÆªÂ\Å·Bá¦Î±ñÈ´
  ¶Å·B

       # sfdisk -g /dev/hdc
       /dev/hdc: 4441 cylinders, 255 heads, 63 sectors/track
       # cd /proc/ide/ide1/hdc
       # echo bios_cyl:17418 bios_head:128 bios_sect:32 > settings
       # sfdisk -g /dev/hdc
       /dev/hdc: 17418 cylinders, 128 heads, 32 sectors/track
       #

  9.1.  LILO Ìp[^ðvZ·é

  J[lÌR}hCÉ `hda=cyls,heads,secs' ÆÇÁ·é±ÆÉæÁ
  ÄMÅ«éWIgðv·éÌÍAÉÍÖÅ·BÙÆñÇåïÌê
  Í secs=63 ÉµÜ·B»ê©ç heads ðwèµÜ·B (¡úÅÌÖÈl
  Í heads=16 Æ heads=255 Å·) cyls Éwè·×«lÍ½Åµå¤?  ±Ì
  lÍ C*H*S ZN^ÌeÊ©ç³mÉßé±ÆªÅ«Ü·Bá¦Î
  71346240 ZN^ (36529274880 oCg)ÌhCuÅÍA C Í
  71346240/(255*63)=4441 ÆµÄvZÅ« (vZÉÍ bc vOðg¦Ü
  ·)A hdc=4441,255,63 Æ¢¤u[gp[^ð¾é±ÆªÅ«Ü·BÇÌ
  æ¤ÉµÄ³mÈeÊðmé±ÆªÅ«éÌÅµå¤?  á¦ÎA

       # hdparm -g /dev/hdc | grep sectors
        geometry     = 4441/255/63, sectors = 71346240, start = 0
       # hdparm -i /dev/hdc | grep LBAsects
        CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=71346240

  Æ¢¤æ¤Ég[^Å 71346240 ZN^Å é±Æðmé 2ÂÌû@ª è
  Ü·BJ[lÌoÍ

       # dmesg | grep hdc
       ...
       hdc: Maxtor 93652U8, 34837MB w/2048kB Cache, CHS=70780/16/63
        hdc: [PTBL] [4441/255/63] hdc1 hdc2 hdc3! hdc4 < hdc5 > ...

  Í(ÈÆà) 34837*2048=71346176 ©(ÈÆà) 70780*16*63=71346240
  ZN^Å é±Æð³¦ÄêÜ·B±ÌêÅÍA2ÔÚÌlÍ (ó: ã
  L hdparm ÅÌlÆ) ôRÉàÜÁ½¯¶Å·ªAêÊIÉ±êçÌlÍ[
  ªØèÌÄçêÄ¢Ü·B±êÍ hdparm ªpÅ«È¢ÉfBXNTC
  YðTZ·é¢¢û@Å·BµÄ cyls Éå«·¬élð^¦È¢æ¤É!
  SCSI fBXNÌêÉÍA³mÈZN^ÍJ[lÌu[gbZ[WÉ
  \¦³êÜ·:

       SCSI device sda: hdwr sector= 512 bytes. Sectors= 17755792 [8669 MB] [8.7 GB]

  (MB â GB ÍÛßçêÄ¢Ü·ªAØèÌÄçêÄÍ¢Ü¹ñBÜ½ 2iÅv
  ZµÄ¢Ü·)

  10.  Ú×

  10.1.  IDE ÌÚ× -  7ÂÌWIg

  IDE hCoÍWIgÉÖ·é 5 ÂÌîñ¹ðÁÄ¢Ü·BêÂÚ
  (G_user) ÍR}hCÅ[UÉæÁÄwè³ê½àÌBñÂÚ
  (G_bios) Í BIOS Ì Fixed Disk Parameter Table (êäÚÆñäÚÌfBX
  NÉÀé) ÅA 32 rbg[hÉÚs·éOÌVXeN®ÉÇÝÜê
  Ü·BOÂÚ (G_phys) ÆlÂÚ (G_log) Í IDENTIFY DEVICE R}hÉÎ
  µÄ IDE Rg[ª¦éîñÅA»ê¼êu¨vu»óÌ_vW
  IgÅ·B

  êûAhCoÍWIgÆµÄñÂÌlðKvÆµÜ·BêÂ (G_fdisk)
  Í HDIO_GETGEO ioctl ªÔ·lAà¤êÂ (G_used) Í I/O ðs¤ÛÉÀÛ
  Égp³êélÅ·B G_user ª^¦çêÄ¢êÎA G_fdisk Æ G_used Í
  »êÅú»³êÜ·B G_user ª^¦çê¸ACMOS ©çîñ (G_bios) ª
  æ¾Å«êÎA»êÉÝè³êÜ·B»êÈOÌÆ«ÉÍAG_phys ÉÝè³
  êÜ·B G_log ªÃÅ éæ¤ÈçAG_used Í»êÉÝè³êÜ·B é
  ¢ÍAG_used ÌlªÃÅÍÈAG_phys ªÃÅ éæ¤ÈçA G_used
  ÉÍ G_phys ÌlªÝè³êÜ·B±±ÅÌuÃvÆÍAwbhª 1-16
  ÌÍÍÉüÁÄ¢é±ÆÅ·B

  ¾¢·¦éÆAR}hCÅÌwèÍABIOS ©çÌlðã«µÄ
  fdisk ªÇÌæ¤ÉfBXNðÆç¦é©ðßÜ·Bµ©µAàµA(wb
  hª 16 ð´¦é)Ï·ãÌWIgðwè·éÆJ[l I/O ÅÍ»Ìl
  Íjü³êAIDENTIFY DEVICE R}h©çÌlªgp³êÜ·B

  G_bios Í»ñÈÉMpÅ«È¢±ÆÉÓµÄ¾³¢: SCSI ©çVXe
  ðN®·é½ßÉêäÚÆñäÚÌfBXNª SCSI fBXN¾Á½ÆµÄ
  àA sda Ì½ßÉ BIOS ªñ·éWIgÍJ[lÅÍ hda Ì½ßÉ
  gíêÜ·B»Ì¤¦ABIOS ZbgAbvÅF¯³¹Ä¢È¢fBXNÍ
  BIOS ©çÍ©¦Ü¹ñB±êÍÌæ¤È±ÆðÓ¡µÜ·Bá¦ÎABIOS
  ZbgAbvÅ hdb ªF¯³êÄ¢È¢ IDE I[ÌVXeÅÍAêä
  ÚÆñäÚÌfBXNÉÂ¢Ä BIOS ªñ·éWIgÍ hda Æ hdc Ì
  àÌÅµå¤B (ó: ÂÜèfBXN hdb ÉÎµÄA hdc ÌWIgª
  Kp³êéÆ¢¤±ÆÅ·B)

  10.2.  SCSI ÉÖ·éÚ×

  SCSI ÅÌÔÍµáÁÄ¢ÄA SCSI R}hÍùÉ_ubNÔð
  gÁÄ¢éÌÅAWIgÍÀÛÌ I/O ÉÖµÄÍÜÁ½sKØÈàÌ
  Å·Bµ©µAp[eBVe[uÌtH[}bgÍ¢¾É IDE Æ¯¶
  ÈÌÅA fdisk Í¢Â©ÌWIgðÅÁ¿ã°È¯êÎÈç¸AÜ½
  HDIO_GETGEO àgíÈ¯êÎÈèÜ¹ñ - m©ÉAfdisk Í IDE fBXNÅ
   ë¤ª SCSI fBXNÅ ë¤ªæÊÍµÜ¹ñBÈºÌÚ×ÈLqðÇß
  ÎAíXÌhCoª»ê¼êA¿åÁÆ¸ÂÙÈÁ½WIgðÅÁ¿ã
  °éÌªª©èÜ·B{É¢Á½àñ¾B

  DOS â»ÌÞðgíÈ¢ÌÈçÎA·×ÄÌg£Ï·Ýèðð¯ÄA 64 wb
  h 32 ZN^gbNðgÁÄ¾³¢ (±ê¾Æ 1 MiB/V_ÆÈè
  ÆÄàÖÅ·)BÜ½±êÈçÎAfBXNð éRg[©ç¼ÌR
  g[Éq¬·¦ÄàâèÍN«È¢Åµå¤B¢Â©Ì SCSI fBX
  NhCo(aha152x, pas16, ppa, qlogicfas, qlogicisp)Í DOS ÆÌÝ·«
  ÉÆÄà_o¿ÅA Linux ÌÝÌVXeÅà 8 GiB ðz¦éfBXNÌg
  pðµÄêÈ¢Åµå¤B±êÍoOÅ·B

  {ÌWIgÍÇ¤ÈÁÄ¢éÌÅµå¤?  »êÍÈPA»ñÈàÌÍ
   èÜ¹ñB½ªmè½àÈ¢Åµå¤ªAÜA»ñÈàÌª Á½Æµ
  ÄàâÎÉ µÄ fdisk â LILO âJ[lÉ»ñÈàÌðwèµÈ¢Å
  ¾³¢BWIgÍ SCSI Rg[ÆfBXNÌÔÅ¾¯g¤×«àÌ
  Å·BÇ¢æ¤Å·ªA SCSI fBXNÌWIgð fdisk â LILO â
  J[lÉwè·éæ¤ÈzÍ¢ð¾¯Å·B

  »êÅàDïSÌ ÜèÇ¤µÄàÆ¾¢£éÌÅ êÎAfBXN©gÉâ
  ¢í¹é±ÆªÅ«Ü·B SCSI R}hÉÍAeÊð²×é READ
  CAPACITY R}hª èÜ·BÜ½AMODE SENSE R}hÌ Rigid Disk
  Drive Geometry y[W(y[W04) ÍV_Æwbhð³¦Äê(Ï
  XÍÅ«Ü¹ñ)A Format y[W(y[W03)ÍZN^ ½èÌoCgÆg
  bN ½èÌZN^ð³¦ÄêÜ·BãÒÍÊmb`ÉË¶µÜ·B
  ÂÜèAgbN ½èÌZN^ÍÂÏÅµÄAO¤ÌgbNÉÍà¤æ
  è½³ñÌZN^ªüÁÄ¢Ü·B Linux Ì scsiinfo vOÍ±¤
  ¢Á½îñð³¦ÄêÜ·B±¤¢Á½îñÍÚ×ðÉß½ãÉ¡G±Ìã
  ÈA¨Ü¯É¾ç©ÉNà(½ª OS Å·ç)±ñÈîñÍg¢Ü¹ñB»Ì
  ãAfdisk Æ LILO ÉÖ·éÀèAÊÉÔ³êé C/H/S = 4476/27/171 È
  ÇÆ¢¤lÍg¢¨ÉÈèÜ¹ñBÆ¢¤ÌÍAp[eBVe[uÍ
  C/H/S É 10/8/6 rbgÃÂµ©èÄÄ¢È¢©çÅ·B (óF´Ò
  Éâ¢í¹½Æ±ëAmb`ÆÍuêÂÌfBXNÌÅAgbN ½è
  ÌZN^ª¯¶ÌævÆÌ±ÆÅ·B)

  ÅÍAJ[lÍ HDIO_GETGEO Ì½ßÌîñðÇ±©çÁÄéÌÅµå
  ¤?  ±êÍ SCSI Rg[©çÁÄé©A½ç©Ì«¢û@ÅìÁ
  ÄµÜ¢Ü·BhCoÉæÁÄÍäXªu^Àvð~µªÁÄ¢éÆl¦Ä
  ¢éæ¤Å·ªAÇÁ±¢AäXÍ DOS â OS/2 Ì FDISK (âAAdaptec Ì
  AFDISK Èñ©) ªg¤ª~µ¢¾¯Å·B

  Linux Ì fdisk Í H Æ S ÂÜèAwbhÆgbN ½èÌZN^¾
  ¯ðgÁÄ LBA ð C/H/S AhXÉÏ·µÜ·ªAV_ C Ígpµ
  È¢±ÆÉÓµÄ¾³¢BhCoÉæÁÄÍAhCoª 1023*255*63
  ZN^ÉÎÅ«é±Æðmç¹é½ßÉA (C,H,S) = (1023,255,63) Å 
  éÆñµÄ«Ü·BsKÈ±ÆÉA±ê©çÍÀÛÌeÊÍí©èÜ¹ñ
  µA fdisk ÌÙÆñÇÌÅÅAæèµ¦éeÊð 8 GiB ÉÀèµÄµÜ¢Ü
  ·B±êÍA¡úÌÀÛÌãÀÆÈÁÄ¢Ü·B

  ÈºÌLqÅÍAM ðfBXNÌeÊAC,H,S ðV_AwbhAgb
  N ½èÌZN^ÆµÜ·B C ð M / (H*S) Åè`³êéÆl¦éÈ
  çAH,S ð¾é¾¯Å\ªÅ·B

  H=64, S=32 ðúlÆµÜ·B

     aha1740, dtc, g_NCR5380, t128, wd7000:
        H=64, S=32 Å·B

     aha152x, pas16, ppa, qlogicfas, qlogicisp:
        C > 1024 ÉÈéÜÅÍAH=64, S=32B»êÈ~ÍAH=255, S=63, C =
        min(1023, M/(H*S))B (±Ì½ßAC ÍÛßçêÄ¨èA H*S*CÍfB
        XNÌeÊ M ÆÍÈèÜ¹ñB±êÍA½¢Ä¢ÌÅÌ fdisk Åâ
        èÆÈèÜ·)B ppa.c ÌR[hÅÍAM ÅÍÈAM+1 ðgpµÄ¨
        èA sd.c ÌoOÉæèA M Í 1 ÌItZbgðÁÄ¢éÆ©ê
        Ä¢Ü·B

     advansys:
        C > 1024 ÉÈéÜÅÍAH=64, S=32B»êÈ~Í BIOS Ì `> 1 GB'
        IvVªüÁÄ¢êÎ H=255, S=63 Å·B

     aha1542:
        Rg[É 2 ÂÌàÌÇ¿çÌÏ·û@ðp¢Ä¢é©â¢ í
        ¹A H=255, S=63 ©AH=64, S=32 Ì½ê©ðgpµÜ·BOÒðgÁ
        Ä¢éêÍAN®bZ[WÆµÄ "aha1542.c: Using extended
        bios translation" Æ\¦³êÜ·B

     aic7xxx:
        C > 1024 ÉÈéÜÅÍ H=64, S=32B»êÈ~Í A"extended" N®p
        [^ªhCoÉ^¦çêÄ¢é©A SEEPROM © BIOS Ìug
        £vrbgª§ÄçêÄ¢éÈçÎA H=255, S=63Å·B Linux
        2.0.36 ÅÍA SEEPROM ª©t©çÈ¢êÍ±Ìg£Ï·ðíÉLø
        ÉµÜ·ªA Linux 2.2.6 ÅÍASEEPROM ª©t©çÈ¢êÍg£
        Ï·ÍA[Uªðêðgp·éæ¤ÉN®p[^ðwèµ½Ì
        ÝLøÉÈèÜ· (SEEPROM ª©t©Á½êÍN®p[^Í³
        ³êÜ·)B±êÍA2.0.36 ÅÝèµ½àÌª 2.2.6 ÅÍN®É¸s
        ·é©àµêÈ¢ (»µÄALILO É `linear' L[[hªKvÉ
        ÈÁ½èAJ[lÌN®p[^ `aic7xxx=extended' ªKvÉ
        ÈÁ½è·é©àµêÈ¢) ±ÆðÓ¡µÄ¢Ü·B

     buslogic:
        C >= 1024 ÉÈéÜÅÍ H=64, S=32B»êÈ~ÍRg[Ìg£
        Ï·ªgp³êÄ¢éêA M < 2^22 (ó: 2 GiB) ÈçÎ H=128,
        S=32 ÅA³àÈ¯êÎ H=255, S=63 Å·Bµ©µA±Ì (C,H,S) Ý
        èðsÁ½ãAp[eBVe[uðÇÝoµÜ·B»µÄAÂ\
        È 3 ÂÌgÝí¹A(H,S) = (64,32), (128,32), (255,63) Ì¤¿
        ©çAendH=H-1 ÉÈè»¤ÈàÌðTµÜ·B»µÄAÌæ¤ÈN
        ®bZ[Wð\¦µÜ·B "Adopting Geometry from Partition
        Table" (p[eBVe[uÌWIgðÌpµÜ·)

     fdomain:
        BIOS ÌhCup[^e[uÌWIgîñðT·©Ap[
        eBVe[uðÇñÅAp[eBVª éÈçÅÌp[
        eBVÌ(endH+1,endS) ð (H,S) ÆµÄgpµÜ·Bp[eB
        VªÈ¢ÈçÎÌæ¤ÉÈèÜ·: M < 2^21 (1 GiB) ÈçÎ
        H=64, S=32 A M < 63*2^17 (3.9 GiB) ÈçÎ H=128, S=63 A³àÈ
        ¯êÎ H=255, S=63 B

     in2000:
        (H,S) = (64,32), (64,63), (128,63), (255,63)Ì¤¿A C <= 1024
        ÆÈéÅÌàÌðgpµÜ·BÅãÌàÌðg¤Æ«ÉÍAC Í
        1023 ÉÛßçêÜ·B

     seagate:
        C,H,S ðfBXN©çÇÝÜ·(Ð¡¡¡¡Á!)B C © S ªå«·¬
        êÎA S=17, H=2 ÆµÄA C <= 1024 ÆÈéÜÅ H ð{ÉµÄ¢«
        Ü·B±êÍ M > 128*1024*17 (1.1 GiB) ÌÆ«A H ª 0 ÉÝè³
        êé±ÆðÓ¡µÜ·B±êÍoOÅ·B

     ultrastor and u14_34f:
        Rg[Ì}bsO[hÉ¶Ä (H,S) = (16,63), (64,32),
        (64,63) Ì¤¿ÌêÂªgp³êÜ·B

  hCoªWIgðwèµÈ¯êÎAp[eBVe[u©fBXN
  eÊ©ço±IÉlðßÜ·B
  p[eBVe[uð©ÄÝÜµå¤Bp[eBVÌIíèðV
  _«EÉuÆ¢¤K¥©çAÇÌæ¤Èp[eBVÅ ÁÄàp[eB
  VÌIíèª end = (endC,endH,endS) Å éÆ«APÉ H = endH+1
  ÅS = endS ÆvZ·é±ÆªÅ«Ü· (JèÔµÜ·ªAZN^Í 1 ©ç
  ¦Ü·)Bà¤µµ§É¢¤ÆAÈºÌæ¤ÉÈèÜ·Bàµp[eBV
  ª¶Ý·éÈçÎA beginC ªàÁÆàå«¢p[eBVðIÑÜ·B
  »¤µÄAend+1 ðAstart Æ length ð«·û@ÆAp[eBVÌIí
  èªV_«EÉ éÆ¼è·éû@ÅvZµÜ·Bàµ¼ûÌ¦ªêv
  ·é©AendC = 1023 ©Â start+length ª (endH+1)*endS Ì®{Èç
  ÎA±Ìp[eBVÍ{ÉV_«EÉ»ë¦çêÄ¢éÆl¦çê
  Ü·BàµA±êª¾ßÈæ¤ÈçÎAÂÜèp[eBVªSR³¢©A
  å«³ªÈñ©ÏÈçÎAfBXNeÊ M ÌÝð©Ü·BASYÍÈ
  ºÌæ¤ÉÈèA±Ìû@ÍAC ðÅå 1024, S ðÅå 62 É³¦éæ¤
  ÈøÊª èÜ·: H = M/(62*1024) ÅØèã°A S = M/(1024*H) ÅØèã
  ° C = M/(H*S) ÅØèÌÄB

  11.  Linux Ì IDE 8 GiB ÌÇ

  Linux Ì IDE hCoÍ ATA IDENTIFY DEVICE NGXgðgp·é±ÆÉ
  æèAfBXNÌWIgÆeÊ(Æ»Ì¼½Ìîñ)ð¾Ü·BÅßÜ
  ÅAC*H*S ÉæèvZ³ê½eÊæèà 10% Èãå«¢êÍAhCoÍ
  Ô³ê½ lba_capacity ÌlðMpµÜ¹ñÅµ½Bµ©µAÆEÌKèÉæ
  è (16514064 ZN^ðz¦é) å«È IDE fBXNÍAÀÛÌTCYÆÍ³
  ÖWÌAv 16514064 ZN^ (7.8 GB (ó: 7.8 GiB Ü½Í 8.4 GB ª³µ
  ¢)) ÆÈé C=16383, H=16, S=63 ðÔµAÀÛÌTCYÍ lba_capacity Å
  ÔµÜ·B

  ÅßÌ Linux J[l (2.0.34 â 2.1.90) Í±Ì±ÆðmÁÄ¢Ä³µ¢
  ®ìðµÜ·BàµÃ¢ Linux J[lðgÁÄ¢ÄAbvO[hàµ½
  ÈA»ÌÊ 8 GiB ðz¦éåeÊfBXNÌ 8 GiB µ©µ¦È¢æ¤
  ÈçÎA /usr/src/linux/drivers/block/ide.c àÌ[`
  lba_capacity_is_ok ðÈºÌæ¤ÉÏXµÄ¾³¢B (ó: ÅàÁÊÈ
  RªÈ¢ÀèAÇ¤¹J[lÌÄRpCðs¤ÌÈçÎAf¼ÉAb
  vO[hµ½ûª¢¢Æv¢Ü·)

       static int lba_capacity_is_ok (struct hd_driveid *id) {
               id->cyls = id->lba_capacity / (id->heads * id->sectors);
               return 1;
       }

  æèÇ¢pb`ÉÂ¢ÄÍAJ[l 2.1.90 ð©Ä¾³¢B

  11.1.  BIOS Ì¡G»

  ¡¢Á½æ¤ÉAåeÊfBXNÍÀÛÌTCYÆÍ³ÖWÈWIg
  C=16383, H=16, S=63 ðÔµAÀÛÌTCYÍ LBAcapacity ÌlÅÔµÜ
  ·B¢Â©Ì BIOS Í±êðð¹¸A±Ì 16383/16/63 ðæè¬³¢V
  _Ææèå«¢wbhAá¦Î 1024/255/63 â 1027/255/63 Æ¢Á
  ½lÉÏ·µÜ·B»¤AJ[lÍPêÌWIg 16383/16/63 ¾¯Å
  ÍÈA BIOS ÉæÁÄÏ·³êÄµÜÁ½WIgà©ª¯È¯êÎÈè
  Ü¹ñBJ[l 2.2.2 ©ç±êÍ³µ³êÜ·( BIOS Éâ¢í¹
  Ä H Æ S ð¾AC = capacity/(H*S) ÆvZ·é±ÆÉæÁÄ)BÊí±Ìâ
  èÍABIOS ÝèÅfBXNð Normal ÆÝè·é±ÆÅðµÜ· ( é¢
  ÍAæèæ¢û@ÍANone ÆÝèµÄ BIOS ÉêØF¯³¹È¢)B±Ì HDD
  ©çN®³¹È¯êÎ¢¯È¢Æ©A DOS/Windows Åàg¤ÈÇÌRÅ±
  êªsÂ\ÅA³çÉJ[lð 2.2.2 ©»êÈ~ÉAbvO[h·éÆ
  ¢¤Iðà³ÈçÎAJ[lÌN®p[^ðgÁÄ¾³¢B

  BIOS ª 16320/16/63 Æñ·éêÍA»êÍÏ·ãÉ 1024/255/63 ð¾
  éÚIÅñ³êÄ¢éÌÅ·B

  11.2.  wbhðßé½ßÌWp

  ½ÌfBXNÍ 15 wbh© 16 wbh©ÌWIgðIðÂ\É·é
  WpðpÓµÄ¢Ü·BftHgÌÝèÍ 16 wbhÌfBXNÉÈÁ
  Ä¢éÅµå¤B¢¸êÌWIgÅà¯¶ZN^Ìà êÎA 15
  wbhÌûªZN^ªÈ¢à èÜ·B±ñÈZbgAbvÌÛÉÍ
  æ¢Rª é©àµêÜ¹ñ: Petri Kaukasoina Í±¤¢ÁÄÜ·:
  u10.1 GB Ì IBM Deskstar 16 GP (model IBM-DTTA-351010) ÍftHgÅ
  Í 16 wbhÉWpªÝè³êÄ¢éªA±Ì (AMI BIOS Ì) Ã¢ PC
  ÅÍu[gµÈ¢ÌÅA 15 wbhÌûÉWpðÝè·éKvª Á½B
  hdparm -i Í RawCHS=16383/15/63 Å LBAsects=19807200 ÆñµÄ¢éB
  Í·×ÄÌeÊð¾é½ßÉ 20960/15/63 ÅgÁÄ¢éBvWpÌÝ
  èÉÂ¢ÄÍAÈºðQÆµÄ¾³¢B
  http://www.storage.ibm.com/techsup/hddtech/hddtech.htm.

  11.3.  eÊðB·½ßÌWp

  ½ÌfBXNÍfBXNðæè¬³©¹©¯é±ÆðÂ\É·éWp
  ðpÓµÄ¢Ü·B»êÍÎ©°½±ÆÅA±êðgpµ½ªé Linux [
  UÍ¨»ç¢È¢Åµå¤ªAåeÊfBXNðÚ±·éÆêÌ BIOS Í
  NbVµÄµÜ¢Ü·BÊíÌðû@ÍAfBXNð®SÉ BIOS ÉF
  ¯³¹È¢±ÆÅ·Bµ©µ±êÍN®fBXNÅÍÈ¢µ©pÅ«È¢
  Åµå¤B

  ÅÌ[È§ÀÍ 4096V_§ÀÅ· (±êÍ 16 wbhÆ 63 ZN^
  gbNÌê 2.11GB Å·)Bá¦ÎAxmÊ MPB3032ATU Æ¢¤ 3.24
  GB ÌfBXNÍftHgÅ 6704/15/63 Æ¢¤WIgÅ·ªAW
  pðÝè·é±ÆÅ 4092/16/63 É©¹©¯é±ÆªÂ\Å·B»µÄ
  LBAcapacity ÉÎµÄ 4124736 ZN^Æñ·éÌÅA OS Í±ÌfBXN
  ªÀÛÍàÁÆåeÊÅ éÆmé±ÆÍÅ«Ü¹ñB (ÀÛÉfBXNÌe
  Êªå«·¬Ä BIOS ªNbV·éÌÅAWpªKvÉÈéÆ¢
  ¤)±Ìæ¤ÈP[XÅÍAfBXNÌTCYÉÂ¢Ä Linux É³¦é½ßÉ
  u[gp[^ðwè·éKvª èÜ·B

  ±êÍ ÜèæÈ¢áÅ·B½ÌfBXNÍWpðÝè·é±ÆÉæ
  èA 2GB ÌfBXNÅ é©Ìæ¤É©¹A 4092/16/63 â 4096/16/63 Æ
  ¢Á½Øèlß½WIgðñµÜ·Bµ©µ LBAcapacity ÅÍ®SÈ
  lðñ·éÌÅ·B±Ìæ¤ÈfBXNÍ³íÉ®ìµÜ·µAWpÌ
  ÝèÉÖíç¸ Linux ÌºÅÍ·×ÄÌeÊðpÅ«Ü·B

  àÁÆàÅßÌ§ÀÍ ``33.8 GB ÌÇ'' Å·B 2.3.21 æèÃ¢ Linux J
  [lÅÍA±êæèeÊÌå«È IDE fBXNð¤Ü·éÉÍpb
  `ªKvÅ·B±Ì§Àæèå«ÈfBXNÌ¢Â©ÅÍ 33.8GB fBXN
  É©¹©¯é½ßÌWpÝèªÂ\ÈàÌª èÜ·Bá¦ÎAIBM
  Deskstar 37.5 GB disk (DPTA-353750) Æ¢Á½æ¤È±Ì§Àæèå«È
  fBXNÍA 33.8 GB ÌfBXNÉ©¹©¯é½ßÌWpÝèªÂ\
  ÅA (ó: 2.1 GB É©¹©¯é±ÆÌÅ«é) ¼ÌåeÊfBXNÌæ¤
  É 16383/16/63 Æ¢¤WIgðñµÜ·ªA LBAcapacity Í (ó:
  33.8GB É·é) 66055248 ÆñµÜ· (65531/16/63 â 4111/255/63
  ÉµÜ·)B 33.8GB É©¹©¯é½ßÌWpÝèðµ½±êçÌ
  fBXNàÜ½A Linux ÌºÅ·×ÄÌeÊðp·é½ßÉu[gp
  [^ðKvÆµÜ·B the BIOS 33.8 GB limit àQÆµÄ¾³¢B

  12.  Linux Ì 65535 V_ÌÇ

  HDIO_GETGEO ioctl Í short (ó: short int ÂÜè 16rbg) ÅV
  _ðÔµÜ·B±êÍA65535 V_æè½¢êÉÍªØèÌÄç
  êÄAá¦Î(T^IÈ SCSI ÌÝèÅÍ 1 V_ 1 MiB ÈÌÅ) 80 GiB
  ÌfBXNÍ 16 GiB É©¦é©àµêÈ¢±ÆðÓ¡µÜ·B¢Á½ñ½ª
  âèÈÌ©ª©ÁÄµÜ¦ÎA»êðñð·é±ÆÍÈPÅ·B

  12.1.  34 GB ´ÌfBXNÉ¨¯é IDE Ìâè

  33.8 GB æèåeÊÈhCuÍA2.3.21 æèÃ¢J[lÅÍ¤Ü®ì
  µÜ¹ñB (ó: ±ÌÍÌÅãÌûÉà¢Ä èÜ·ªA2.2.14 È~Å
  àT|[gµÄ¢Ü·B) »ÌÚ×ÍÈºÌÊèÅ·B éú È½ªV½É
  66835440 ZN^ (34.2 GB) Ì IBM-DPTA-373420 fBXNðÁÄ«½Æµ
  Üµå¤B 2.3.21 ÈOÌJ[lÍA»êÌTCYð 769*16*63 = 775152
  ZN^ (0.4 GB) ÆñµA¿åÁÆªÁ©è·éÅµå¤B»µÄR}h
  Cp[^ hdc=4160,255,63 ð^¦ÄàAÔÍÜÁ½ðµÈ¢
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  idedisk_setup() ÅÍAfBXNªñ·éWIg(16383/16/63 Å·)ð
  ó¯æèA[UªR}hCÅwèµ½lÅã«µÜ·B±ÌlÍ
  BIOS WIgÌ½ß¾¯Égp³êéàÌÅ·B[`
  current_capacity() â idedisk_capacity() ÍA 66835440/(16*63)=66305
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  ÅA 769 ÉÈÁÄµÜ¢Ü·B lba_capacity_is_ok() Í id->cyls ðjó
  ·éÌÅA»ÌãÌÄÑoµ·×ÄÉÎµÄRÌlðÔµA»ÌÊfBXN
  ÌeÊÍ 769*16*63 ÉÈèÜ·B¢Â©ÌJ[lÉÎµÄÍpb`ªñ
  ³êÄ¢Ü·B 2.0.38 pÌpb`Í ftp.kernel.org ÉpÓ³êÄ¢Ü
  ·B 2.2.12 pÌpb`Í www.uwsg.indiana.edu.  ÉpÓ³êÄ¢Ü·B
  2.2.14pre J[lÍ±êçÌfBXNðT|[gµÄ¢Ü·B 2.3.* J[
  lV[YÅÍA2.3.21 ©ç±êçÌfBXNðT|[gµÄ¢Ü·BÜ
  ½AfBXNÌTCYð 33.8GB ÉØèlßé½ßÉAn[hEFAIÉ
  ``WpðÝè·é'' ±ÆÅàâèðuðv·é±ÆªÅ«Ü·Bn[
  hfBXN©çu[gµæ¤Æ·éÌÈçÎA½Ìê ``BIOS AbvO
  [h'' ªKvÉÈéÅµå¤B

  13.  g£p[eBVÆ_p[eBV

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  ` AA55A±¯Ä 16 oCg¸ÂÌ 4 ÂÌp[eBVe[uÌGg
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  eBVe[uGg (ó: 5, F, 85 ÍÉg£p[eBV
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  [^Í¸íêÜ·æBv

  vO sfdisk Í®SÈ`F[ð\¦Å«Ü·Bá¦ÎA

  # sfdisk -l -x /dev/hda

  Disk /dev/hda: 16 heads, 63 sectors, 33483 cylinders
  Units = cylinders of 516096 bytes, blocks of 1024 bytes, counting from 0

     Device Boot Start     End   #cyls   #blocks   Id  System
  /dev/hda1          0+    101     102-    51376+  83  Linux
  /dev/hda2        102    2133    2032   1024128   83  Linux
  /dev/hda3       2134   33482   31349  15799896    5  Extended
  /dev/hda4          0       -       0         0    0  Empty

  /dev/hda5       2134+   6197    4064-  2048224+  83  Linux
      -           6198   10261    4064   2048256    5  Extended
      -           2134    2133       0         0    0  Empty
      -           2134    2133       0         0    0  Empty

  /dev/hda6       6198+  10261    4064-  2048224+  83  Linux
      -          10262   16357    6096   3072384    5  Extended
      -           6198    6197       0         0    0  Empty
      -           6198    6197       0         0    0  Empty
  ...
  /dev/hda10     30581+  33482    2902-  1462576+  83  Linux
      -          30581   30580       0         0    0  Empty
      -          30581   30580       0         0    0  Empty
      -          30581   30580       0         0    0  Empty

  #

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  85 Ì»ê¼êðg£p[eBVÆµÄF¯Å«È¢ fdisk ÅAF ÌÉ
  5 ðìéAÆ¢¤û@ÅÂ\ÉÈèÜ·) ÊÌ fdisk ^CvÌvO
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  Å·B

  14.  âèÌð

  âèðø¦½Æv¤lÌ½ÍAµ©µÀÛÉÍ½à«¢_Í èÜ¹ñBÜ
  ½Aø¦Ä¢éâèÌ´öªfBXNÌWIgÉ éÆvíêéêÅ
  àAÀÛÉÍfBXNÌWIgÉÍ½Ìâèà èÜ¹ñBãÅq×½æ
  ¤È·×ÄÌ±ÆªÔð¡GÉµÄ¢Ü·ªAfBXNÌWIgÌµ¢
  ÍñíÉÈPÅ·: ÜÁ½\µªÈ¯êÎ½à·éKvÍ èÜ¹ñ; àµ
  N®É `LI' ÌæÉiÜÈ¢êÍ LILO ÉL[[h `linear' ð^¦Ä
  ¾³¢BJ[lÌN®bZ[Wð©Äv¢oµÄ¾³¢: (LILO â
  fdisk âJ[lR}hCÅwbhâV_ð^¦Ä)WIg
  ð¢¶êÎ¢¶éÙÇA³íÉÍ®ìµÈÈéÅµå¤B¨¨´ÁÏ
  É¢¦ÎAftHgªêÔÈÌÅ·B

  ³çÉv¢oµÄ¾³¢: Linux ªfBXNÌWIgðgíÈ¢AÂ
  ÜèLinux ª®ìµÄ¢éÔÍAfBXNÌWIgÉæÁÄâèªø«N
  ±³êé±ÆÍ èÜ¹ñB»êÇ±ë©AfBXNÌWIgÍ LILO Æ
  fdisk ¾¯Égp³êÜ·B»¤ALILO ªJ[lÌN®É¸s·éê
  ÍAWIgÉâèª é©àµêÜ¹ñBÙÈé OS ªp[eBVe
  [uððµÈ¢êÍAWIgÉâèª é©àµêÜ¹ñBÅà»
  ê¾¯Å·BÆèí¯Amount ª®ìµÈ¢æ¤Év¦éêÅàAfBXN
  ÌWIgÉÍ½ÌÖWà èÜ¹ñ - âèÍ¼ÌÉ èÜ·B

  14.1.  âè: SCSI ©çN®µ½AIDE fBXNªÏÈWIgðÁÄ
  ¢é

  fBXNªÏÈWIgðÂÌÍÆÄà èª¿Å·B Linux J[l
  Í hd0 Æ hd1 (80H Æ 81H ÌªÓçê½ BIOS hCu) ÉÂ¢Ä
  BIOS Éâ¢í¹A±Ìf[^ª hda Æ hdb ÌàÌ¾Æ¼èµÜ·Bµ©
  µ SCSI ©çN®µ½VXeãÅÍAÅÌñÂÌfBXNª SCSI fBX
  NÅµå¤©çAÅÌ IDE fBXN hda Å é 5ÔÚÌfBXNÉÎµÄ
  sda ÌWIgªèÄçêéÈñÄ±ÆªN«é©àµêÜ¹ñB±ê
  ÍAN®â /etc/lilo.conf É¨¢ÄAKØÈ C, H, S ðgÁÄu[
  gp[^ `hda=C,H,S' ð^¦é±ÆÅÈPÉðÅ«Ü·B

  14.2.  âèÈµ: ¯¶fBXNªÙÈéWIgðÁÄ¢é?

  uÍÜÁ½¯¶ IBM »ÌfBXNð 2äÁÄ¢Ü·Bµ©µAfdisk
  ª\¦·éTCYÍÙÈÁÄ¢Ü·B±ñÈ´¶:

       # fdisk -l /dev/hdb
       Disk /dev/hdb: 255 heads, 63 sectors, 1232 cylinders
       Units = cylinders of 16065 * 512 bytes

          Device Boot  Start      End   Blocks   Id  System
       /dev/hdb1           1     1232  9896008+  83  Linux native
       # fdisk -l /dev/hdd
       Disk /dev/hdd: 16 heads, 63 sectors, 19650 cylinders
       Units = cylinders of 1008 * 512 bytes

          Device Boot  Start      End   Blocks   Id  System
       /dev/hdd1           1    19650  9903568+  83  Linux native

  ½ÅÅµå?v

  ½ªN«Ä¢éÌÅµå¤?  »¤AÜ¸æêÉA±êçÌhCuÍµÁ©
  è 10 MKoCgg¦Ä¢Ü·: hdb Í 255*63*1232*512 = 10133544960 o
  CgÅA hdd Í 16*63*19650*512 = 10141286400 oCgÅ·ªA½à«¢
  ÍÈ¢µJ[lÍÇ¿çà 10.1 GB Å éÆðµÄ¢Ü·BÅÍ½ÌT
  CYªá¤ÌÅµå¤?  »êÍAJ[lÍÅÌñäÌ IDE fBXNÉÂ
  ¢ÄÍ BIOS ©çîñð¾A»Ì BIOS Í hdb ð 255 wbhÅÄ}bvµÄ
  ¢é©çÅ· (16*19650/255=1232 V_)B±ÌÛßÉæé¹¸Í 8MB ã
  Å·B

  hdd à¯¶û@ÅÄ}bvµ½¢ÌÈçÎAJ[lÌu[gp[^É
  `hdd=1232,255,63' ð^¦Ä¾³¢B

  14.3.  âèÈµ: df æè fdisk Ìûªp[eBVªå«©¦é

  fdisk ÍubNªfBXNãÉ¢Â¶Ý·é©ðñµÜ·B mke2fs ð
  gÁÄfBXNãÉt@CVXeðìÁ½êAt@CVXeÍë
  L(bookkeeping)Ì½ßÌ¢ç©ÌXy[XðKvÆµÜ· - ÊíÍt@C
  VXeÌTCYÌ 4% ç¢ÅA mke2fs ·éÛÉ½Ì inode ðìé
  Ææè¦Ü·BÈºÍáÅ·:

  # sfdisk -s /dev/hda9
  4095976
  # mke2fs -i 1024 /dev/hda9
  mke2fs 1.12, 9-Jul-98 for EXT2 FS 0.5b, 95/08/09
  ...
  204798 blocks (5.00%) reserved for the super user
  ...
  # mount /dev/hda9 /somewhere
  # df /somewhere
  Filesystem         1024-blocks  Used Available Capacity Mounted on
  /dev/hda9            3574475      13  3369664      0%   /mnt
  # df -i /somewhere
  Filesystem           Inodes   IUsed   IFree  %IUsed Mounted on
  /dev/hda9            4096000      11 4095989     0%  /mnt
  #

  Ü¸A4095976 ubNÌp[eBVª èÜ·B±±É ext2 t@C
  VXeðì¬µAKÈÉ}EgµÜ·B·éÆ 3574475 ubNÉ
  ÈÁÄµÜ¢Ü· - 521501 ubN (12%) Í inode Æ¼ÌëLpXy[X
  ÉÁï³ê½ÌÅ·Bv 3574475 Æ 3369664 ÌÔÌ·ÍA[Uª 13 u
  bNðgpµÄ¢ÄA³çÉ 204798 ubNª root Ì½ßÉ\ñ³êÄ
  ¢é½ßÅ é±ÆÉÓµÄ¾³¢BãÒÍ tune2fs ÅÏXÅ«Ü·B
  ±Ì `-i 1024' Íj[XXv[ÈÇÌ¬³¢t@CªRÙÇ éê
  ÉÌÝKµÄ¢Ü·BftHgÅÍ±¤ÈèÜ·:

       # mke2fs /dev/hda9
       # mount /dev/hda9 /somewhere
       # df /somewhere
       Filesystem         1024-blocks  Used Available Capacity Mounted on
       /dev/hda9            3958475      13  3753664      0%   /mnt
       # df -i /somewhere
       Filesystem           Inodes   IUsed   IFree  %IUsed Mounted on
       /dev/hda9            1024000      11 1023989     0%  /mnt
       #

  ¡xÍ 137501 ubN(3.3%)ÌÝª inode Ì½ßÉgp³êA»ÌÊÈ
  Oæè 384 MB à¦ÄÜ·B (inode 1ÂÉÂ« 128 oCggÁÄéÝ½¢
  Å·B) êûAæÌêÅÍ 4096000 t@CÛ¶Å«éÌÉÎµ(Ç¤©Ä
  à½·¬)A±Ìt@CVXeÅÍÅå 1024000 t@CªÛ¶Å«Ü·
  (±êÅà\ª·¬Ü·)B

  15.  ú{êÅÉÂ¢Ä

  |óÉÖ·é²Ó©Í JF vWFNg <JF@linux.or.jp> ¶ÉAµÄ¾
  ³¢B

  v2.2j Ì|óÉ ½ÁÄÍAx]½ê³ñ shorie@ibm.net Éæé Large
  Disk mini HOWTO v1.0 Ì|ó©ç½Ìªð¬p³¹Ä¢½¾«Üµ½B
  [´ÓµÜ·B