On 10/09/2010 12:36 PM, Fatih Tümen wrote:
2. I accidentally ran grub-install /dev/sda instead of /dev/hda
If you still actually have an 'hda' then you should start using the new disk drivers in the kernel "CONFIG_ATA" section rather than the older and deprecated "CONFIG_IDE" section. That will make all of your /dev/hd* devices become /dev/sd* instead. This may have nothing to do with your current problem, but it's time to make the change in any case. (You will need to make appropriate changes in fstab.)
grub> setup --stage2=/boot/grub/stage2 --prefix=/grub (hd1) Error 21: Selected disk does not exist
What choices does grub show you when you type "root (hd" and then hit TAB? That should list all hard disks that your BIOS knows about. The list will change, of course, depending on whether your USB disk is plugged in (and working) or not. (grub always refers to 'hd' and never 'sd', which I'm sure you already know :) I'm not using the dreaded 'hardware' word yet, though I'm suspicious. When you tested the drive on the other machine, did you use a different USB cable? Will fdisk read and recognize the partition table on the USB disk? If fdisk results in disk read errors then I'd begin to think more about 'hardware' :(
