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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
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 <TITLE>Ext-Rootfs-mini-HOWTO: ³°ÉÕ¤± HDD ¤ò¥ë¡¼¥È¥Õ¥¡¥¤¥ë¥·¥¹¥Æ¥à¤Ë¤¹¤ë</TITLE>
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<HR>
<H2><A NAME="HDD"></A> <A NAME="s3">3. ³°ÉÕ¤± HDD ¤ò¥ë¡¼¥È¥Õ¥¡¥¤¥ë¥·¥¹¥Æ¥à¤Ë¤¹¤ë</A></H2>

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<UL>
<LI>Note PC         : Toshiba 610CT</LI>
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<LI><CODE>cd linux</CODE> ¤·¡¢loadlin ¤ò»È¤Ã¤Æ Linux ¤òµ¯Æ°¤·¤Þ¤¹¡£¤³¤Î»þ¡¢
pcmciax.gz ¤ò initrd ¤Ë»ØÄꤷ¡¢¥ë¡¼¥È¥Õ¥¡¥¤¥ë¥·¥¹¥Æ¥à¤Ï initrd ¤ò
Ÿ³«¤·¤ÆºîÀ®¤µ¤ì¤ë ramdisk(/dev/ram0) ¤ò»ØÄꤷ¤Þ¤¹¡£

<HR>
<PRE>
    c:\linux > loadlin zimage initrd=pcmciax2.gz root=/dev/ram0
</PRE>
<HR>

</LI>
<LI>pcmciax2.gz ¤Ë¤Ï pcmcia-2.8.22 ÁêÅö¤Îµ¡Ç½¤¬ÁȤߤ³¤Þ¤ì¤Æ¤¤¤ë¤Î¤Ç¡¢¥µ
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<LI>Slackware ¤Î¥¤¥ó¥¹¥È¡¼¥ë¤¬½ªÎ»¤·¤¿¤é¡¢ºÆµ¯Æ°¤¹¤ëÁ°¤Ë pcmciax2.gz ¤Ë¾¯¤·
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»È¤Ã¤Æ¥Þ¥¦¥ó¥È¤·¤Ê¤±¤ì¤Ð¤Ê¤ê¤Þ¤»¤ó¡£initrd ¤Ë¤Ï°µ½Ì¥Õ¥¡¥¤¥ë¤ò¼«Æ°Åª¤Ë
Ÿ³«¤¹¤ëµ¡Ç½¤¬¤¢¤ê¤Þ¤¹¤¬¡¢loopback ¥Õ¥¡¥¤¥ë¥·¥¹¥Æ¥à¤Ë¤Ï¼«Æ°Å¸³«µ¡Ç½¤¬
¤Ê¤¤¤Î¤Ç¡¢°ìÅÙ pcmciax2.gz ¤òŸ³«¤¹¤ëɬÍפ¬¤¢¤ê¤Þ¤¹¡£

pcmciax2.gz ¤òŸ³«¤¹¤ë¤¿¤á¤Ë¡¢¤Þ¤º <CODE>/dos</CODE> ¤Î¤è¤¦¤Ê¥Ç¥£¥ì¥¯¥È¥ê¤ò
ºî¤ê¡¢¤½¤³¤Ë Windows95 ¤Î¥Ç¥£¥¹¥¯Îΰè¤ò¥Þ¥¦¥ó¥È¤·¡¢gunzip ¤Ç 
pcmciax2.gz ¤òŸ³«¤·¤Þ¤¹¡£

<HR>
<PRE>
    # mkdir /dos
    # mount -t msdos /dev/hda1 /dos
    # gunzip &lt; /dos/linux/pcmciax2.gz > /dos/linux/pcmciax2
</PRE>
<HR>


pcmciax2 ¤ËºÙ¹©¤¹¤ë¤¿¤á¤Ë¡¢pcmciax2 ¤ò¥Þ¥¦¥ó¥È¤¹¤ë¤¿¤á¤Î¥Ç¥£¥ì¥¯¥È¥ê
(/workdir)¤òºî¤ê¡¢mount ¤Ë -o loop ¥ª¥×¥·¥ç¥ó¤ò»ØÄꤷ¤Æ pcmciax2 ¥Õ¥¡
¥¤¥ë¤ò¥Õ¥¡¥¤¥ë¥·¥¹¥Æ¥à¤È¤·¤Æ¥Þ¥¦¥ó¥È¤·¤Þ¤¹¡£

<HR>
<PRE>
    # mkdir /workdir
    # /mnt/bin/mount /dos/linux/pcmciax2 /workdir -o loop
    # ls /workdir
    bin/     cdrom@   etc/     lib/     proc/    sbin/    usr/
    boot/    dev/     floppy/  mnt/     root/    tmp/     var/
</PRE>
<HR>


initrd ¤Ç¤Ï¡¢initrd ¾å¤Ë linuxrc ¤È¤¤¤¦¥Õ¥¡¥¤¥ë¤¬¤¢¤ì¤Ð¤½¤ì¤ò¤Þ¤ºµ¯Æ°
¤¹¤ë¤³¤È¤Ë¤Ê¤Ã¤Æ¤¤¤Þ¤¹¡£¤Ç¤¹¤«¤é linuxrc ¤ò <CODE>bin/sh</CODE> ¤Ë¥·¥ó¥Ü¥ê¥Ã
¥¯¥ê¥Ã¥¯¤·¤Æ¤ª¤±¤Ð¡¢initrd ¤òµ¯Æ°¤·¤¿¾õÂÖ¤Ç sh ¤ò»È¤Ã¤ÆÂÐÏÃŪ¤Ë³Æ¼ï¤Î
ÀßÄê¤ò¹Ô¤¦¤³¤È¤¬²Äǽ¤Ë¤Ê¤ê¤Þ¤¹¡£

<HR>
<PRE>
    # ln -s bin/sh linuxrc
    # ls -l /workdir/linuxrc
    lrwxrwxrwx 1 root root 6 Jan 4 14:39 /workdir/linuxrc -> bin/sh*
</PRE>
<HR>


¤â¤¦°ì¤Ä¡¢¼ÂºÝ¤Î¥ë¡¼¥È¥Õ¥¡¥¤¥ë¥·¥¹¥Æ¥à¤Ë¤Ê¤ë¥Ñ¡¼¥Æ¥£¥·¥ç¥ó¤Ë 
<CODE>/initrd</CODE> ¤È¤¤¤¦¥Ç¥£¥ì¥¯¥È¥ê¤òºî¤Ã¤Æ¤ª¤­¤Þ¤¹¡£initrd ·Ðͳ¤Çµ¯Æ°
¤·¤¿»þ¡¢¼ÂºÝ¤Î¥ë¡¼¥È¥Õ¥¡¥¤¥ë¥·¥¹¥Æ¥à¤Ë¤Ê¤ë¥Ñ¡¼¥Æ¥£¥·¥ç¥ó¤Ë /initrd ¤È
¤¤¤¦¥Ç¥£¥ì¥¯¥È¥ê¤¬¤¢¤ë¤È¡¢initrd ¤Ç»È¤Ã¤¿»ÃÄêÈǤΥ롼¥È¥Õ¥¡¥¤¥ë¥·¥¹¥Æ
¥à¤Ï¤³¤Î¥Ç¥£¥ì¥¯¥È¥ê¤Ë°Ü¤·¤ÆÊݸ¤µ¤ì¤Þ¤¹¡£

<HR>
<PRE>
    # mkdir /workdir/initrd
</PRE>
<HR>


¤³¤ì¤Ç¥¤¥ó¥¹¥È¡¼¥ëºî¶È¤¬½ªÎ»¤·¤Þ¤·¤¿¡£¥·¥¹¥Æ¥à¤òºÆµ¯Æ°¤·¤Æ¡¢ºÆÅÙ Win95 
¤ò¥³¥Þ¥ó¥É¥×¥í¥ó¥×¥È¥â¡¼¥É¤Çµ¯Æ°¤·¤Þ¤¹¡£
</LI>
<LI>º£²ó¤Ï¥ë¡¼¥È¥Õ¥¡¥¤¥ë¥·¥¹¥Æ¥à¤òÂÐÏÃŪ¤ËÀßÄꤷ¤¿¤¤¤Î¤Ç loadlin.exe ¤ò°Ê
²¼¤Î¤è¤¦¤Ë <CODE>root=</CODE> ¥ª¥×¥·¥ç¥ó¤Ï»ØÄꤻ¤º¤Ëµ¯Æ°¤·¤Þ¤¹¡£initrd ¤Î
»ØÄê¤â½¤Àµ¤·¤¿ pcmciax2 ¤Ë¤·¤Æ¤¤¤ë¤³¤È¤Ë¸æÃí°Õ¤¯¤À¤µ¤¤¡£

<HR>
<PRE>
    c:\linux\> loadlin zimage initrd=pcmciax2
</PRE>
<HR>

</LI>
<LI>¤³¤Î¾õÂ֤ǵ¯Æ°¤¹¤ë¤È¡¢¥«¡¼¥Í¥ë¤òŸ³«¤·¤¿¸å¡¢initrd ¾å¤Ë¤¢¤ë linuxrc ¤ò
¼Â¹Ô¤·¡¢¥×¥í¥ó¥×¥È¤¬½Ð¤Æ»ß¤Þ¤ê¤Þ¤¹(linuxrc ¤Ï sh ¤Ø¤Î¥·¥ó¥Ü¥ê¥Ã¥¯¥ê¥ó
¥¯¤Ê¤Î¤Ç¡¢¼ÂºÝ¤Ë¤Ï sh ¤¬Æ°¤¤¤Æ¤¤¤Þ¤¹)¡£¤³¤Î¾õÂ֤ǤϤޤÀ pcmcia-cs ¤¬Æ°
¤¤¤Æ¤¤¤Ê¤¤¤Î¤Ç¡¢¤Þ¤º <CODE>/etc/rc</CODE> ¤ò¼Â¹Ô¤·¤Æ pcmcia-cs ¤ò»È¤¨¤ë¤è
¤¦¤Ë¤·¤Þ¤¹¡£

<HR>
<PRE>
 # /etc/rc
</PRE>
<HR>
   

<CODE>/etc/rc</CODE> ¤¬ <CODE>/rc/rc.d/rc.pcmcia</CODE> ¤ò¼Â¹Ô¤¹¤ë¤È¡¢
pcmcia-cs ¤¬µ¡Ç½¤¹¤ë¤è¤¦¤Ë¤Ê¤ê¡¢SCSI ¥«¡¼¥É¤ä¤½¤ì¤ËÀܳ¤µ¤ì¤¿³°Éô¥Ç¥Ð
¥¤¥¹¤âǧ¼±¤µ¤ì¤ë¤è¤¦¤Ë¤Ê¤ê¤Þ¤¹¡£Àµ¤·¤¯Ç§¼±¤·¤Æ¤¤¤ë¤«¡¢É½¼¨¤µ¤ì¤ë¥á¥Ã¥»¡¼
¥¸¤ò³Îǧ¤·¤Æ¤¯¤À¤µ¤¤¡£
</LI>
<LI>¼¡¤Ë¥ë¡¼¥È¥Õ¥¡¥¤¥ë¥·¥¹¥Æ¥à¤ò³°ÉÕ¤±¤Î SCSI ¥Ç¥£¥¹¥¯¤ËÊѹ¹¤·¤Þ¤¹¡£
initrd ¤ò»È¤Ã¤Æ¤¤¤ë¾ì¹ç¡¢proc ¥Õ¥¡¥¤¥ë¥·¥¹¥Æ¥à¤Î 
<CODE>/proc/sys/kernel/real-root-dev</CODE> ¤È¤¤¤¦¥Õ¥¡¥¤¥ë¤Ë¥ë¡¼¥È¥Õ¥¡¥¤¥ë¥·¥¹
¥Æ¥à¤Î¥Ç¥Ð¥¤¥¹ÈÖ¹æ¤ò½ñ¤­¤³¤ó¤Ç¤ä¤ë¤È¡¢initrd ¤ò½ªÎ»¤·¤¿ºÝ¡¢¤½¤Î¥Ç
¥Ð¥¤¥¹¤ò¥ë¡¼¥È¥Õ¥¡¥¤¥ë¥·¥¹¥Æ¥à¤È¤·¤Æ¥Þ¥¦¥ó¥È¤·¤Þ¤¹¡£

¥ë¡¼¥È¥Õ¥¡¥¤¥ë¥·¥¹¥Æ¥à¤Î¥Ç¥Ð¥¤¥¹ÈÖ¹æ¤Ï <CODE>/dev/xxx</CODE> ¥Õ¥¡¥¤¥ë¤ò 
<CODE>ls -l</CODE> ¤¹¤ì¤Ðɽ¼¨¤µ¤ì¤Þ¤¹¡£Î㤨¤Ð¡¢³°ÉÕ¤±¤Î 1 ¤Ä¤á¤Î SCSI HDD 
¤Î¥Ñ¡¼¥Æ¥£¥·¥ç¥ó 1 ¤ò¥ë¡¼¥È¥Õ¥¡¥¤¥ë¥·¥¹¥Æ¥à¤Ë¤·¤¿¤¤¾ì¹ç¡¢

<HR>
<PRE>
    # ls -l /dev/sda1
    brw-r-----   1 root    disk   8,   1 Apr 29  1995 /dev/sda1
</PRE>
<HR>


¤Ê¤Î¤Ç¡¢<CODE>/dev/sda1</CODE> ¤Î¥Ç¥Ð¥¤¥¹ÈÖ¹æ¤Ï major ¤¬ 8¡¢minor ¤¬ 1 ¤Ç
¤¹¡£¤³¤Î¾ì¹ç¡¢"0x801" ¤ò <CODE>/proc/sys/kernel/real-root-dev</CODE> ¤Ë½ñ
¤­¤³¤ß¤Þ¤¹¡£

<HR>
<PRE>
    # echo "0x801" > /proc/sys/kernel/real-root-dev
</PRE>
<HR>


ƱÍͤ˳°ÉÕ¤±¤Î 2 ¤Ä¤á¤Î SCSI HDD Á´ÂΤò¥ë¡¼¥È¥Õ¥¡¥¤¥ë¥·¥¹¥Æ¥à¤Ë¤¹¤ë¾ì¹ç¡¢

<HR>
<PRE>
    # ls -l /dev/sdb1
    brw-r-----   1 root    disk   8,   17 Apr 29  1995 /dev/sda1
</PRE>
<HR>


¤Ê¤Î¤Ç¡¢"0x811" ¤ò <CODE>/proc/sys/kernel/real-root-dev</CODE> ¤Ë½ñ¤­¤³¤ß
¤Þ¤¹¡£2 ÂæÌܤΠIDE ¥É¥é¥¤¥Ö¤Î 2 ¤ÄÌܤΥѡ¼¥Æ¥£¥·¥ç¥ó¤Ê¤é¤Ð¡¢

<HR>
<PRE>
    # ls -l /dev/hdb2
    brw-r-----   1 root    disk   3,  66 Apr 28  1995 /dev/hdb2
</PRE>
<HR>


¤Ê¤Î¤Ç "0x342" ¤ò½ñ¤­¤³¤ß¤Þ¤¹¡£

ls -l /dev/xxx ¤Çɽ¼¨¤µ¤ì¤ë¥Ç¥Ð¥¤¥¹ÈÖ¹æ¤Ï 10 ¿Êɽµ­¤Ç¤¹¤¬¡¢<CODE>echo
"0xaaa"</CODE> ¤Ç½ñ¤­¤³¤à¾ì¹ç¤Ï 16 ¿Êɽµ­¤Ë¤Ê¤Ã¤Æ¤¤¤ë¤³¤È¤Ë¸æÃí°Õ¤¯¤À¤µ
¤¤¡£
</LI>
<LI>¼ÂºÝ¤Î¥ë¡¼¥È¥Õ¥¡¥¤¥ë¥·¥¹¥Æ¥à¤ÎÀßÄ꤬½ª¤ï¤ì¤Ð exit ¤òÆþÎϤ¹¤ë¤«¡¢ctrl-D 
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fsck ¤¹¤ë¤Î¤Ï¥Ø¥ó¤Ê¤Î¤Ç¡¢fsck ¤·¤Æ¤ë²ó¤ê¤ÏÁ´Éô¥³¥á¥ó¥È¥¢¥¦¥È¤·¤Æ¡¢
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<CODE>/initrd</CODE> °Ê²¼¤Ë°Ü¤µ¤ì read only ¤Ç¥Þ¥¦¥ó¥È¤µ¤ì¤Æ¤¤¤Þ¤¹¡£initrd 
Ãʳ¬¤ÇÆ°¤¤¤Æ¤¤¤¿³Æ¼ï¤Î¥×¥í¥»¥¹¤«¤é¤Ï¤³¤Î¥Ç¥£¥ì¥¯¥È¥ê¤Ï¥ë¡¼¥È¥Õ¥¡¥¤¥ë¥·
¥¹¥Æ¥à¤Î¤Þ¤Þ¤Ë¸«¤¨¤ë¤Î¤Ç¡¢Î㤨¤Ð cardmgr ¤Î¸«¤ë <CODE>/var/run/stab</CODE> 
¤Ï <CODE>/initrd/var/run/stab</CODE> ¤Ë¤Ê¤ê¤Þ¤¹¡£

pcmcia-cs ¤Ç¤Ï <CODE>/var/run/stab</CODE> ¤Ë¸½ºßÁÞÆþ¤µ¤ì¤Æ¤¤¤ë¥«¡¼¥É¤Î¾õÂÖ
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<HR>
<PRE>
    # killall cardmgr
    # /sbin/cardmgr
</PRE>
<HR>


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pcmcia-cs ¤¬ initrd Ãʳ¬¤ÇÁȤߤ³¤ó¤À pcmcia_core.o ¤ä i82365.o¡¢ds.o 
¤Î 3 ¤Ä¤Î¥â¥¸¥å¡¼¥ë¤Ï³°ÉÕ¤± SCSI HDD ¤ò¥ë¡¼¥È¥Õ¥¡¥¤¥ë¥·¥¹¥Æ¥à¤Ë¤·¤Æ¤¤
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"device busy" Åù¤Î¥¨¥é¡¼¥á¥Ã¥»¡¼¥¸¤¬¤¤¤¯¤Ä¤«½Ð¤Þ¤¹¤¬¡¢Æä˵¤¤Ë¤¹¤ëɬÍ×
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<LI>ºÆµ¯Æ°¤·¤¿ cardmgr ¤ÏÄ̾ï¤Î <CODE>/var/run/stab</CODE> ¤ò¸«¤Ê¤¬¤é¥«¡¼¥É¤Î
´Æ»ë¤ò¹Ô¤¦¤¿¤á¡¢¿·¤·¤¤¥«¡¼¥É¤òÁÞÆþ¤·¤Æ¤âǧ¼±¤Ç¤­¤ë¤Ï¤º¤Ç¤¹¡£PC ¥«¡¼¥É
¤¬Àµ¤·¤¯Ç§¼±¤µ¤ì¤ë¤«¡¢¥«¡¼¥É¤òÈ´¤­ÁÞ¤·¤·¤Æ»î¤·¤Æ¤ß¤Æ¤¯¤À¤µ¤¤¡£¤¿¤À¤·¡¢
³°ÉÕ¤±¤Î SCSI ¤ò¥ë¡¼¥È¥Õ¥¡¥¤¥ë¥·¥¹¥Æ¥à¤Ë¤·¤Æ¤¤¤ë¾ì¹ç¡¢SCSI ¥«¡¼¥É¤òÈ´
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</LI>
</OL>
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