Karl Larsen k5di at
Wed May 14 21:39:35 UTC 2008

Rashkae wrote:
> Karl Larsen wrote:
>>     This is old hat to the guys running 27 servers for someones company, 
>> but for me it was new and needed. I have been backing up my system 
>> (7.10) for months to a hard drive that lives in a $20.00 plastic case 
>> with power supply and a USB cord using rsync and it IS slick how it 
>> finds the new stuff and adds it to the system already on the hard drive. 
>> But I have never recovered the saved system and have been wondering...
>>     So yesterday I rsync copied this system to the second hard drive on 
>> this computer. It took about an hour to do but it took longer to boot 
>> the dam thing. But I got it from an earlier problem with Windows on a 
>> SATA drive. The IDE drive is /dev/hda and the SATA drive is /dev/sda. As 
>> far as grub is concerned /dev/hda = /dev/sda = (hd0,x). here is the 
>> important part:
>> title           Ubuntu 7.10, kernel 2.6.22-14-generic
>>         map (hd0) (hd1)
>>         map (hd1) (hd0)
>> root            (hd1,0)
>> kernel          /boot/vmlinuz-2.6.22-14-generic 
>> root=UUID=a9c1cb61-ddfd-44f6-88b0-6dc976daf9ca ro quiet
>> initrd          /boot/initrd.img-2.6.22-14-generic
>> quiet
>>     So now I can boot the rsync version on the SATA hard drive and it 
>> works just fine. And that lets me know what to do if I need to re-load 
>> this system on a new hard drive or another computer. I just rsync it 
>> onto the new devise.
> I can't imagine any reason why the map commands would be required for
> Linux.  If you only have 1 hard drive in the system, root should be
> (hd0,0) and away to go.
    I thought the fact I have two hard drives was very clear. I guess 
not. But I DO have one IDE and ONE SATA hard drives.

> Remember that when you rsync onto a new drive (or use your backup drive
> directly, whatever floats your boat) you need to edit both /etc/fstab
> and /boot/grub/menu.lst to update the UUID's.
> Yes you do. Unless you put it back where it was on the old hard drive :-) 


	Karl F. Larsen, AKA K5DI
	Linux User
   PGP 4208 4D6E 595F 22B9 FF1C  ECB6 4A3C 2C54 FE23 53A7

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