RE: [CentOS] Raid 1 problems

Mace Eliason wrote:

Hi,

I have setup raid on a new server and have found that if I remove one drive it will boot but if I remove the other it says missing OS.

I am using two 18.2Gig SCSI drives, using software raid 1. I have it setup with the following drives in this order.

/boot swap /

all are mirrored between the two drives. I remember a while back that their was a problem with grub would that be the problem here? Why does it work on one drive and not the other?

I guess that answers Steve's question from that last email... :)

The problem is that grub does not update the boot block on both drives. Dig through the list archives for instructions on fixing it.