Need Help Editing Grub

kitepilot at kitepilot.com kitepilot at kitepilot.com
Mon Jan 25 07:06:48 MST 2010


>> is there perhaps, a typo?
No, it's not a typo!
The drive is still hd1 until you pull the old one.
Grub doesn't know about which drive, the BIOS tell it to.
Once you pull the M$ drive and flip the cables, GRUB will see it as hd0.
ET 

 

Mark Phillips writes: 

> I understand the flow....shouldn't I tell grub somehow that the new boot
> drive is hd0,0? In your steps below, is there perhaps, a typo? 
> 
> Thanks! 
> 
> Mark 
> 
> On Sun, Jan 24, 2010 at 3:58 PM, kitepilot at kitepilot.com <
> kitepilot at kitepilot.com> wrote: 
> 
>> >> 1. How do I change grub on the Linux drive (hdb) to say "the ...
>> If you are running GRUB 0.XX (GRUB 1.XX is different):
>> Boot your Debian machine and as root run:
>> grub
>> root (hd1,0)
>> root (hd1)
>> It should answer that it found the stages, verify that there are no errors.
>> quit 
>>
>>
>> Then take a backup of /boot/grub/menu.lst and and make sure that everything
>> is either using UUID(s) or labels or every reference to hd1,0 is converted
>> to hd0,0 
>>
>> Verify your /etc/fstab likewise. 
>>
>>
>> > 2. Do I move the second drive to the first ide port, or leave it as ...
>> Shutdown, pull the cable from the windoze drive and plug it to Linux drive.
>> Turn on and pray...   :)
>> Free advice, you can't sue me   ;-)
>> YMMV
>> ET 
>>
>> 
>>
>>
>> Mark Phillips writes: 
>>
>> > I have two ide drives in one machine - drive 1 is a Windows drive and
>> drive
>> > 2 is a Linux drive. Using grub, I can boot into either windows or debian.
>> I
>> > want to remove the windows drive and replace it with a larger, blank
>> drive
>> > for backup storage. I have a feeling if I just remove the first drive and
>> > put the new one there, the machine will not boot, since the MBR is
>> probably
>> > on the first drive (it came with the machine, and I just added the second
>> > drive for Linux). My questions:
>> >
>> > 1. How do I change grub on the Linux drive (hdb) to say "the windows
>> drive
>> > is dead, boot here instead, long live linux"?
>> >
>> > 2. Do I move the second drive to the first ide port, or leave it as the
>> > second ide drive and put the new drive in the fist ide port?
>> >
>> > Thanks!
>> >
>> > Mark
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