[CentOS] Make Raid1 2nd disk bootable?

[Bernard Lheureux]

On Tue, 2007-05-15 at 17:12 -0500, Les Mikesell wrote:
> On earlier versions of Centos, I could boot the install CD in rescue 
> mode, let it find and mount the installed system on the HD even when it 
> was just one disk of RAID1 partitions (type=FD).   When booting from the 
> centos5 disk the attempt find the system gives a box that says 'You 
> don't have any Linux partitions'.  At the bottom of the screen there is 
> something that says:
>   cl->raidtype=5 rd_type=1
> <TAB><Alt-Tab> between elements cl->raidtype=5 rd_type=1 <F12> next screen
> But there is no way to access the bottom part.  If I hit the OK button 
> and get a shell I can mount the partitions myself, but then when I 
> chroot to the mounted system there are no devices in /dev.  What's the 
> right way to install grub on what was /dev/sdb in the original install 
> but is now the only disk and moved to /dev/sda?  The old /dev/sda is no 
> longer there....
Arrfab has a good way to do it on his blog:
http://www.arrfab.net/blog/?p=11

 
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