On Wed, 2004-11-03 at 21:03 -0500, Yang Xiao wrote: > ha, I want to do a RAID 1, mirror the first drive for failover support. > Thanks, > Yang > I do not think you can do that non-destructively, as you have to redefine your partition types on the existing drive... Have a look at these sites: http://www.siliconvalleyccie.com/linux-adv/raid.htm http://willert.dk/geek/raid.html http://www.md.pp.ru/articles/linuxraid.html http://togami.com/~warren/guides/remoteraidcrazies/ Thomas