13.3. ¥Ö¡¼¥È¥Þ¥Í¡¼¥¸¥ã¤Èµ¯Æ°¥¹¥Æ¡¼¥¸

13.3.1. ¥Ö¡¼¥È¥Þ¥Í¡¼¥¸¥ã

MBR ¤ä¥Ö¡¼¥È¥Þ¥Í¡¼¥¸¥ã¤Î¥³¡¼¥É¤Ïµ¯Æ°¥×¥í¥»¥¹¤ÎÂè 0 ¥¹¥Æ¡¼¥¸¤È¸Æ¤Ð¤ì¤ë¤³¤È¤¬¤¢¤ê¤Þ¤¹¡£ ¤³¤ÎÀá¤Ç¤ÏÁ°½Ò¤Î 2 ¤Ä¤Î¥Ö¡¼¥È¥Þ¥Í¡¼¥¸¥ã¡¢ boot0 ¤È LILO ¤Ë¤Ä¤¤¤ÆÀâÌÀ¤·¤Þ¤¹¡£

boot0 ¥Ö¡¼¥È¥Þ¥Í¡¼¥¸¥ã. FreeBSD ¤Î¥¤¥ó¥¹¥È¡¼¥é¤ä boot0cfg(8) ¤¬¥Ç¥Õ¥©¥ë¥È¤Ç¥¤¥ó¥¹¥È¡¼¥ë¤¹¤ë MBR ¤Ï¡¢/boot/boot0 ¤ò´ð¤Ë¤·¤Æ¤¤¤Þ¤¹ (boot0 ¤ÏÈó¾ï¤Ëñ½ã¤Ê¥×¥í¥°¥é¥à¤Ç¤¹¡£ MBR ¤Ë¤¢¤ë¥×¥í¥°¥é¥à¤Ï¡¢ ¥¹¥é¥¤¥¹¥Æ¡¼¥Ö¥ë¤ÈËöÈø¤Î¼±ÊÌ»Ò 0x55AA ¤¬¤¢¤ë¤¿¤á¡¢ 446 ¥Ð¥¤¥È¤ÎÂ礭¤µ¤Ç¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤¤È¤¤¤¦À©¸Â¤¬¤¢¤ë¤¿¤á¤Ç¤¹)¡£ ¥Ï¡¼¥É¥Ç¥£¥¹¥¯¤Ë boot0 ¤ÈÊ£¿ô¤Î¥ª¥Ú¥ì¡¼¥Æ¥£¥ó¥°¥·¥¹¥Æ¥à¤ò¥¤¥ó¥¹¥È¡¼¥ë¤·¤¿¾ì¹ç¡¢ µ¯Æ°»þ¤Ë°Ê²¼¤Î¤è¤¦¤Ê²èÌ̤¬½Ð¤ë¤Ç¤·¤ç¤¦¡£

例 13-1. boot0 ¤Î¥¹¥¯¥ê¡¼¥ó¥·¥ç¥Ã¥È

F1 DOS
F2 FreeBSD
F3 Linux
F4 ??
F5 Drive 1

Default: F2

¾¤Î¥ª¥Ú¥ì¡¼¥Æ¥£¥ó¥°¥·¥¹¥Æ¥à¡¢ÆÃ¤Ë Windows® ¤Ï¡¢ ´û¸¤Î MBR ¤ò¼«¤é¤Î MBR ¤Ç¾å½ñ¤­¤·¤Æ¤·¤Þ¤¦¤³¤È¤ÇÃΤé¤ì¤Æ¤¤¤Þ¤¹¡£ ¤â¤·¤½¤¦¤Ê¤Ã¤Æ¤·¤Þ¤Ã¤¿¤é¡¢ ¤â¤·¤¯¤Ï´û¸¤Î MBR ¤ò FreeBSD ¤Î MBR ¤ÇÃÖ¤­´¹¤¨¤¿¤¤¤Î¤Ê¤é¡¢ ¼¡¤Î¥³¥Þ¥ó¥É¤ò»È¤Ã¤Æ¤¯¤À¤µ¤¤¡£

# fdisk -B -b /boot/boot0 device

device ¤Ïµ¯Æ°¤¹¤ë¥Ç¥Ð¥¤¥¹Ì¾¤Ç¡¢ ¤¿¤È¤¨¤Ð 1 ÈÖÌܤΠIDE ¥Ç¥£¥¹¥¯¤Ï ad0¡¢ 2 ÈÖÌܤΠIDE ¥³¥ó¥È¥í¡¼¥é¤ËÀܳ¤µ¤ì¤Æ¤¤¤ë 1 ÈÖÌܤΠIDE ¥Ç¥£¥¹¥¯¤Ï ad2¡¢ 1 ÈÖÌܤΠSCSI ¥Ç¥£¥¹¥¯¤Ï da0 ¤Ê¤É¤È¤Ê¤ê¤Þ¤¹¡£ MBR ¤ÎÀßÄê¤ò¥«¥¹¥¿¥Þ¥¤¥º¤·¤¿¤¤¾ì¹ç¤Ï boot0cfg(8) ¤ò»È¤Ã¤Æ¤¯¤À¤µ¤¤¡£

LILO ¥Ö¡¼¥È¥Þ¥Í¡¼¥¸¥ã. ¤³¤Î¥Ö¡¼¥È¥Þ¥Í¡¼¥¸¥ã¤ò¥¤¥ó¥¹¥È¡¼¥ë¤·¤Æ FreeBSD ¤òµ¯Æ°¤¹¤ë¤è¤¦¤Ë¤¹¤ë¤Ë¤Ï¡¢¤Þ¤º Linux ¤òµ¯Æ°¤·¤Æ /etc/lilo.conf ¥³¥ó¥Õ¥£¥°¥ì¡¼¥·¥ç¥ó¥Õ¥¡¥¤¥ë¤Ë°Ê²¼¤òÄɲ䷤Ƥ¯¤À¤µ¤¤¡£

other=/dev/hdXY
table=/dev/hdX
loader=/boot/chain.b
label=FreeBSD

¾åµ­¤Ë¤ª¤¤¤Æ¡¢FreeBSD ¤Î¥×¥é¥¤¥Þ¥ê¥Ñ¡¼¥Æ¥£¥·¥ç¥ó¤È¥É¥é¥¤¥Ö¤ò Linux ¤Î¼±Ê̻Ҥò»È¤Ã¤Æ»ØÄꤷ¤Æ¤¯¤À¤µ¤¤¡£ X ¤ò Linux ¤Î¥É¥é¥¤¥Öʸ»ú¤Ë¡¢¤Þ¤¿ Y ¤ò Linux ¤Î¥×¥é¥¤¥Þ¥ê¥Ñ¡¼¥Æ¥£¥·¥ç¥óÈÖ¹æ¤ËÃÖ¤­´¹¤¨¤Æ¤¯¤À¤µ¤¤¡£ SCSI ¥É¥é¥¤¥Ö¤ò»È¤Ã¤Æ¤¤¤ë¤Î¤Ç¤¢¤ì¤Ð¡¢ /dev/hd ¤ò /dev/sd ¤Î¤è¤¦¤ËÆɤßÂؤ¨¤Æ¤¯¤À¤µ¤¤¡£ Ʊ¤¸¥É¥é¥¤¥Ö¾å¤ËξÊý¤Î¥ª¥Ú¥ì¡¼¥Æ¥£¥ó¥°¥·¥¹¥Æ¥à¤¬ÃÖ¤¤¤Æ¤¢¤ë¤Ê¤é¡¢ loader=/boot/chain.b ¹Ô¤ÏÉÔÍפǤ¹¡£ ¤³¤ì¤Ç /sbin/lilo -v ¤ò¼Â¹Ô¤¹¤ë¤È¥·¥¹¥Æ¥à¤Ë¿·¤·¤¤Êѹ¹¤¬È¿±Ç¤µ¤ì¤Þ¤¹¡£ ²èÌ̤Υá¥Ã¥»¡¼¥¸¤ò¸«¤Æ³Îǧ¤·¤Æ¤ª¤­¤Þ¤·¤ç¤¦¡£

13.3.2. µ¯Æ°¥¹¥Æ¡¼¥¸ 1 /boot/boot1 ¤Èµ¯Æ°¥¹¥Æ¡¼¥¸ 2 /boot/boot2

³µÇ°¾å¡¢Âè 1 ¥¹¥Æ¡¼¥¸¤ÈÂè 2 ¥¹¥Æ¡¼¥¸¤Ï ¥Ï¡¼¥É¥Ç¥£¥¹¥¯¤ÎƱ¤¸Îΰè¾å¤ÎƱ°ì¤Î¥×¥í¥°¥é¥à¤ÎÉôʬÉôʬ¤Ç¤¹¡£ ¥¹¥Ú¡¼¥¹¤ÎÀ©Ìó¤Î¤¿¤á 2 ¤Ä¤Ëʬ³ä¤µ¤ì¤Æ¤¤¤Þ¤¹¤¬¡¢ ¤¤¤Ä¤â°ì½ï¤Ë¥¤¥ó¥¹¥È¡¼¥ë¤µ¤ì¤Þ¤¹¡£ ¥¤¥ó¥¹¥È¡¼¥é¤Þ¤¿¤Ï bsdlabel ¤Ï¡¢Î¾¼Ô¤ò 1 ¤Ä¤Ë¤Þ¤È¤á¤¿¥Õ¥¡¥¤¥ë /boot/boot ¤ò¥³¥Ô¡¼¤·¤Þ¤¹ (²¼µ­»²¾È)¡£

Âè 1 ¥¹¥Æ¡¼¥¸¤ÈÂè 2 ¥¹¥Æ¡¼¥¸¤Ï¡¢¥Õ¥¡¥¤¥ë¥·¥¹¥Æ¥à¤Î³°Éô¡¢ µ¯Æ°¥¹¥é¥¤¥¹¤ÎºÇ½é¤Î¥È¥é¥Ã¥¯¤ËÃÖ¤«¤ì¡¢ ÀèƬ¤¬ºÇ½é¤Î¥»¥¯¥¿¤Ë¤­¤Þ¤¹¡£ boot0 ¤Þ¤¿¤Ï¤½¤Î¾¤Î¥Ö¡¼¥È¥Þ¥Í¡¼¥¸¥ã¤Ï¡¢ µ¯Æ°¥×¥í¥»¥¹¤ò³¤±¤ë¤¿¤á¤ËɬÍ×¤Ê¥×¥í¥°¥é¥à¤¬¤½¤³¤Ë¤¢¤ë¤ÈÁÛÄꤷ¤Æ¤¤¤Þ¤¹¡£ »ÈÍѤµ¤ì¤ë¥»¥¯¥¿¤Î¿ô¤Ï¡¢/boot/boot ¤ÎÂ礭¤µ¤«¤é´Êñ¤Ëʬ¤«¤ê¤Þ¤¹¡£

boot1 ¤Ï 512 ¥Ð¥¤¥È¤ÎÂ礭¤µ¤Ç¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤¤È¤¤¤¦À©¸Â¤¬¤¢¤ë¤Î¤Ç¡¢ Èó¾ï¤Ëñ½ã¤Ê¥×¥í¥°¥é¥à¤Ç¤¹¡£ ¤³¤Î¥×¥í¥°¥é¥à¤Ï boot2 ¤ò¸¡º÷¤·¡¢ ¼Â¹Ô¤¹¤ë¤¿¤á¡¢¤½¤Î¥¹¥é¥¤¥¹¤Î¾ðÊó¤òÊÝ»ý¤¹¤ë FreeBSD ¤Î BSD ¥é¥Ù¥ë ¤Ë´Ø¤¹¤ëºÇÄã¸Â¤Î¾ðÊó¤À¤±¤ò»ý¤Ã¤Æ¤¤¤Þ¤¹¡£

boot2 ¤Ï¤â¤¦¾¯¤·¹âµ¡Ç½¤Ç¤¹¡£ ¤³¤ì¤Ï FreeBSD ¤Î¥Õ¥¡¥¤¥ë¥·¥¹¥Æ¥à¾å¤Ç¥Õ¥¡¥¤¥ë¤ò¸«¤Ä¤±¤ëǽÎϤò»ý¤Á¡¢ ¼Â¹Ô¤¹¤ë¥«¡¼¥Í¥ë¤ä¥í¡¼¥À¤ò»ØÄꤹ¤ë¤¿¤á¤Î´Êñ¤Ê¥¤¥ó¥¿¥Õ¥§¡¼¥¹¤òÄ󶡤·¤Þ¤¹¡£

¥í¡¼¥À (loader) ¤Ï¤µ¤é¤Ë¹âµ¡Ç½¤Ê¤â¤Î¤Ç¡¢ »È¤¤¤ä¤¹¤¯´Êñ¤Êµ¯Æ°ÀßÄ꤬¹Ô¤Ê¤¨¤ë¼êÃʤòÄ󶡤·¤Þ¤¹¡£ boot2 ¤ÏÄ̾綠¤ì¤òµ¯Æ°¤·¤Þ¤¹¡£ °ÊÁ°¤Î boot2 ¤Ë¤Ï¡¢ ¥«¡¼¥Í¥ë¤òľÀܵ¯Æ°¤¹¤ëµ¡Ç½¤·¤«¤¢¤ê¤Þ¤»¤ó¤Ç¤·¤¿¡£

例 13-2. boot2 ¤Î¥¹¥¯¥ê¡¼¥ó¥·¥ç¥Ã¥È

>> FreeBSD/i386 BOOT
Default: 0:ad(0,a)/boot/loader
boot:

¤â¤·²¾¤Ë¥¤¥ó¥¹¥È¡¼¥ë¤µ¤ì¤¿ boot1 ¤È boot2 ¤òÊѹ¹¤·¤¿¤¤¤Î¤Ç¤¢¤ì¤Ð¡¢ bsdlabel(8) ¤ò»È¤Ã¤Æ¤¯¤À¤µ¤¤¡£

# bsdlabel -B diskslice

diskslice ¤Ïµ¯Æ°¤¹¤ë¥Ç¥£¥¹¥¯¤È¥¹¥é¥¤¥¹¤Ç¡¢ ¤¿¤È¤¨¤ÐºÇ½é¤Î IDE ¥Ç¥£¥¹¥¯¤Î 1 ÈÖÌܤΥ¹¥é¥¤¥¹¤Ï ad0s1 ¤È¤Ê¤ê¤Þ¤¹¡£

Dangerously Dedicated Modebsdlabel(8) ¤ò»È¤¦¤È¤­¡¢ ad0 ¤Î¤è¤¦¤Ë¥Ç¥£¥¹¥¯Ì¾¤À¤±¤ò»ØÄꤹ¤ë¤È¡¢ ¥¹¥é¥¤¥¹¤ò»ý¤¿¤Ê¤¤´í¸±¤ÊÀìÍѥǥ£¥¹¥¯¤òºîÀ®¤·¤Æ¤·¤Þ¤¤¤Þ¤¹¡£ ¤³¤ì¤Ï¤Þ¤º´Ö°ã¤¤¤Ê¤¯¡¢¤¢¤Ê¤¿¤¬¤ä¤ê¤¿¤¤¤³¤È¤Ç¤Ï¤Ê¤¤¤Ç¤·¤ç¤¦¤«¤é¡¢ ɬ¤º Return ¥­¡¼¤ò²¡¤¹Á°¤Ë bsdlabel(8) ¥³¥Þ¥ó¥É¤òÆó½Å¤Ë¥Á¥§¥Ã¥¯¤·¤Æ¤¯¤À¤µ¤¤¡£

13.3.3. µ¯Æ°¥¹¥Æ¡¼¥¸ 3 /boot/loader

¥í¡¼¥À¤Ï»°Ãʳ¬¤Îµ¯Æ°¥×¥í¥»¥¹¤ÎºÇ½ªÃʳ¬¤Ç¤¹¡£ ¥í¡¼¥À¤ÏÄ̾¥Õ¥¡¥¤¥ë¥·¥¹¥Æ¥à¾å¤Î /boot/loader ¤È¤·¤Æ¸ºß¤·¤Æ¤¤¤Þ¤¹¡£

¥í¡¼¥À¤Ï¡¢¤è¤ê¤µ¤Þ¤¶¤Þ¤Ê¥³¥Þ¥ó¥É·²¤ò¥µ¥Ý¡¼¥È¤·¤¿ ¶¯ÎϤʥ¤¥ó¥¿¥×¥ê¥¿¤Ë¤è¤Ã¤ÆÄ󶡤µ¤ì¤ë´Ê°×ÁȤ߹þ¤ß¥³¥Þ¥ó¥É·²¤òÍøÍѤ¹¤ë¤³¤È¤Ç¡¢ ¥æ¡¼¥¶¤¬ÍøÍѤ·¤ä¤¹¤¤ÀßÄê¼êÃʤȤʤë¤è¤¦¤ËÀ߷פµ¤ì¤Æ¤¤¤Þ¤¹¡£

13.3.3.1. ¥í¡¼¥À¥×¥í¥°¥é¥à¤Î½èÍý¤Îή¤ì

¥í¡¼¥À¤Ï½é´ü²½¤ÎºÝ¤Ë¥³¥ó¥½¡¼¥ë¤È¥Ç¥£¥¹¥¯¤Î¸¡½Ð¤ò¹Ô¤Ê¤¤¡¢ ¤É¤Î¥Ç¥£¥¹¥¯¤«¤éµ¯Æ°¤·¤Æ¤¤¤ë¤«¤òÄ´¤Ù¤Þ¤¹¡£ ¤½¤·¤ÆɬÍפÊÊÑ¿ô¤òÀßÄꤷ¤Æ¤«¤é¥¤¥ó¥¿¥×¥ê¥¿¤òµ¯Æ°¤·¡¢ ¥¹¥¯¥ê¥×¥È¤«¤é¥³¥Þ¥ó¥É¤òÁ÷¤Ã¤¿¤ê¼ê¤Ç¥³¥Þ¥ó¥É¤òÆþÎϤ·¤¿¤ê¤Ç¤­¤Þ¤¹¡£

¥í¡¼¥À¤Ï¼¡¤Ë /boot/loader.rc ¤òÆɤ߹þ¤ß¡¢Ä̾ÊÑ¿ô¤Îɸ½àÃͤòÄêµÁ¤·¤¿ /boot/defaults/loader.conf ¤È¡¢¤½¤Î¥Þ¥·¥ó¤Ë¥í¡¼¥«¥ë¤ÊÊÑ¿ô¤òÄêµÁ¤·¤¿ /boot/loader.conf ¤òÆɤ߹þ¤ß¤Þ¤¹¡£ loader.rc ¤Ï¤½¤ì¤é¤ÎÊÑ¿ô¤Ë¤â¤È¤Å¤­¡¢ ÁªÂò¤µ¤ì¤¿¥â¥¸¥å¡¼¥ë¤È¥«¡¼¥Í¥ë¤ò¥í¡¼¥É¤·¤Þ¤¹¡£

¥í¡¼¥À¤ÏºÇ¸å¤Ë¡¢É¸½àÀßÄê¤Ç 10 ÉäΥ­¡¼ÆþÎÏÂÔ¤Á»þ´Ö¤òÍÑ°Õ¤·¡¢ ÆþÎϤ¬¤Ê¤±¤ì¤Ð¥«¡¼¥Í¥ë¤òµ¯Æ°¤·¤Þ¤¹¡£ ÆþÎϤ¬¤¢¤Ã¤¿¾ì¹ç¡¢´Ê°×¥³¥Þ¥ó¥É·²¤¬»È¤¨¤ë¥×¥í¥ó¥×¥È¤¬É½¼¨¤µ¤ì¡¢ ¥æ¡¼¥¶¤ÏÊÑ¿ô¤òÄ´À°¤·¤¿¤ê¡¢ ¤¹¤Ù¤Æ¤Î¥â¥¸¥å¡¼¥ë¤ò¥¢¥ó¥í¡¼¥É¤·¤¿¤ê¡¢ ¥â¥¸¥å¡¼¥ë¤ò¥í¡¼¥É¤·¤¿¤ê¤¹¤ë¤³¤È¤¬¤Ç¤­¤Þ¤¹¡£ ¤½¤Î¸å¡¢ºÇ½ªÅª¤Êµ¯Æ°¤äºÆµ¯Æ°¤Ø°Ü¹Ô¤·¤Þ¤¹¡£

13.3.3.2. ¥í¡¼¥À¤ÎÁȤ߹þ¤ß¥³¥Þ¥ó¥É

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autoboot seconds

seconds ¤ÇÍ¿¤¨¤é¤ì¤¿»þ´ÖÆâ¤ËÆþÎϤ¬¤Ê¤±¤ì¤Ð¡¢ ¥«¡¼¥Í¥ë¤Îµ¯Æ°¤Ø¤È¿Ê¤ß¤Þ¤¹¡£ ¥«¥¦¥ó¥È¥À¥¦¥ó¤òɽ¼¨¤·¡¢É¸½àÀßÄê¤Ç¤Ï 10 Éô֤Ǥ¹¡£

boot [-options] [kernelname]

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boot-conf

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help [topic]

/boot/loader.help ¤òÆɤ߹þ¤ß¡¢¥Ø¥ë¥×¥á¥Ã¥»¡¼¥¸¤òɽ¼¨¤·¤Þ¤¹¡£ topic ¤Ë index ¤¬»ØÄꤵ¤ì¤¿¾ì¹ç¡¢ÍøÍѲÄǽ¤Ê topic ¤òɽ¼¨¤·¤Þ¤¹¡£

include filename

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load [-t type] filename

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ls [-l] [path]

»ØÄꤵ¤ì¤¿ path ¤Ë¤¢¤ë¥Õ¥¡¥¤¥ë¤òɽ¼¨¤·¤Þ¤¹¡£ path ¤¬»ØÄꤵ¤ì¤Æ¤¤¤Ê¤±¤ì¤Ð¡¢¥ë¡¼¥È¥Ç¥£¥ì¥¯¥È¥ê¤òɽ¼¨¤·¤Þ¤¹¡£ -l ¤¬»ØÄꤵ¤ì¤Æ¤¤¤ì¤Ð¥Õ¥¡¥¤¥ë¥µ¥¤¥º¤âɽ¼¨¤µ¤ì¤Þ¤¹¡£

lsdev [-v]

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lsmod [-v]

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more filename

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reboot

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set variable, set variable=value

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unload

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13.3.3.3. ¥í¡¼¥À¤Î»ÈÍÑÎã

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    unload
    load kernel.old
    

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    unload
    set kernel="kernel.old"
    boot-conf
    
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    load -t userconfig_script /boot/kernel.conf
    

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