Disk /dev/hda: 5368 MB, 5368709120 bytes
255 heads, 63 sectors/track, 652 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/hda1 * 1 13 104391 83 Linux
/dev/hda2 14 523 4096575 83 Linux
/dev/hda3 524 588 522112+ 82 Linux swap
/dev/hda4 589 652 514080 5 Extended
/dev/hda5 589 652 514048+ 83 Linux
[root@woody root]# mount
/dev/hda2 on / type ext3 (rw)
none on /proc type proc (rw)
usbdevfs on /proc/bus/usb type usbdevfs (rw)
/dev/hda1 on /boot type ext3 (rw)
none on /dev/pts type devpts (rw,gid=5,mode=620)
/dev/hda5 on /home type ext3 (rw)
none on /dev/shm type tmpfs (rw)
先刪除/boot分區試着恢復一下
[root@woody root]# fdisk /dev/hda
Command (m for help): p
Disk /dev/hda: 5368 MB, 5368709120 bytes
255 heads, 63 sectors/track, 652 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/hda1 * 1 13 104391 83 Linux
/dev/hda2 14 523 4096575 83 Linux
/dev/hda3 524 588 522112+ 82 Linux swap
/dev/hda4 589 652 514080 5 Extended
/dev/hda5 589 652 514048+ 83 Linux
Command (m for help): d
Partition number (1-5): 1
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
WARNING: Re-reading the partition table failed with error 16: Device or resource busy.
The kernel still uses the old table.
The new table will be used at the next reboot.
Syncing disks.
reboot
沒有找到/boot分區直接進入grub界面中
這時候放入第一張安裝光盤進入rescue模式，新建一個/boot分區，然後重啓就可以了。