Thanks everybody, I followed the instruction Alex gave and it worked like a charm. Yang On Sat, 5 Mar 2005 12:41:55 -0800 (PST), Justin Zygmont <jzygmont@xxxxxxxxxxxxx> wrote: > You just need to install GRUB on the MBR of the second drive. I think the > grub-install <device> should work, if not, there is also a manual way of > doing it. This is because the boot sector isn't actually raided. > > > On Sat, 5 Mar 2005, Yang Xiao wrote: > > > Hi all, > > I have raided the 2 SCSI drives on a DELL PE1550 with RAID 1 including > > the /boot partition. > > I found that one of the drive can't boot, how do I make both drives > > bootable so that I have a true mirror? I've tried to dd the first few > > sectors on the drive that boots to the other drive unseccessfully > > using dd if=/dev/sda bs=512 count=[1,2,3], grub starts then hang. Can > > someone please help ? > > > > Many thanks, > > > > Yang > > > > >