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Re: [PLUG] reinstalling grub
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On Sun, Jul 27, 2008 at 09:09:54AM -0400, Art Alexion wrote:
...
> that there is a problem with the primary SATA hard drive. The drive (sda)
> has three partitions: sda1=/boot, sda2=/, and sda5=swap. sda1 & 2 are ext3,
> sda1 being primary and sda2, LVM.
[snip]
> I gound a web page that suggested running
> # grub
> > root (hd0,0)
> > setup (hd0)
Since you have a sata drive, /dev/sda, you probably want to do the following:
grub> device (sd0) /dev/sda
grub> root (sd0,0)
grub> setup (sd0)
Below is sample output from the setup command:
Checking if "/boot/grub/stage1" exists... yes
Checking if "/boot/grub/stage2" exists... yes
Checking if "/boot/grub/e2fs_stage1_5" exists... yes
Running "embed /boot/grub/e2fs_stage1_5 (sd0)"... 16 sectors are embedded.
succeeded
Running "install /boot/grub/stage1 (sd0) (sd0)1+16 p (sd0,0)/boot/grub/stage2
/boot/grub/grub.conf"... succeeded
Also, it might be worth verifying that /dev/sda1 is set as the boot
partition using the fisk command below:
$ fdisk -l
Disk /dev/sda: 80.0 GB, 80000000000 bytes
255 heads, 63 sectors/track, 9726 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x0002ddf9
Device Boot Start End Blocks Id System
/dev/sda1 * 1 25 200781 83 Linux
/dev/sda2 26 9726 77923282+ 8e Linux LVM
Can you mount the drive on /mnt?
$ mount /dev/sda1 /mnt
You should see the following
$ ls /mnt/grub
device.map grub.conf minix_stage1_5 stage2
e2fs_stage1_5 iso9660_stage1_5 reiserfs_stage1_5 ufs2_stage1_5
fat_stage1_5 jfs_stage1_5 splash.xpm.gz vstafs_stage1_5
ffs_stage1_5 menu.lst stage1 xfs_stage1_5
In fact, if the grub setup command can't find files, you can manually
copy after mounting it on /mnt.
Hope this helps.
Regards,
Mike Chirico
___________________________________________________________________________
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