grub, hard drive mapping, booting
So I am trying to use grub to rewrite my MBR and reboot to linux. (I had previously been sharing disks between linux and Windows and got a corrupted disk.)
I have a partition / and a separate /boot partition.
I have grub in /boot/grub.
I don't have a recovery disk so I boot linux from the CDRom, using linux rescue, and it sets an image up in /mnt/sysimage.
Using grub, I can find stage 1 like this;
Then I do this, as instructed by the grub manual;
What setup actually runs is this;
install /grub/stage1 d (hd0) /grub/stage2 p /grub/grub.conf
This looks good to me - I have a link from menu.lst to grub.conf.
However, if I cycle the power now and try it without the linux CD, I see grub startup, it gives me a menu, I pick a version of linux, and it says;
kernel /vmlinuz-2.4.20-20.7 ro root=/dev/hdc1 hdb=ide-scsi
Error 15; file not found
The kernel command looks right, but why, oh why, is it setting root to (hd1,1) ? Could it be something in my device.map? Or /etc/fstab? I don't know how to diagnose this problem beyond recognizing that it's not using the root that I set prior to running setup in grub.
I have tried the same install command (that setup creates) but without the 'd' argument, I get the same result when I reboot (still looking for (hd1,1)).
I have tried setting up device.map (in boot/grub) with either of
these two lines (obviously not both at the same time)
PLEASE HELP! Any insight would be greatly appreciated!!!
Just as an update, I finally solved this problem on my own.
My device.map was wrong (after I had switched the drives around) and I had forgotten that grub-install uses that file. After I fixed device.mmap, and reran grub-install, I was able to get grub to boot. Yay! (Big sigh, much relief.)
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