> > tell kernel which devices to use for your root filesystem (if your > > root is on raid device), by using something like > > append="md=2,/dev/hda1,/dev/hdb1" > > I have some partitions with the fd type in raid arrays but > would like to switch to the manual method you just described. > These partitions hold data I care about. Is it safe to change > the partition type: > - while the array is not active? > - while the array is active? I would recommend to umount the array and stop it if you can. The fd or default 83 (IIRC), is just a label on the disk, and won't destroy data. I've more experience with labels on Solaris, and have done those "on-the-fly" with no affects though. Remember (with RedHat Advanced Server anyway), you'd have to actually disable autodetection. I'm still working on how it works because I'm still unclear whether this is a kernel feature, or just a result of init scripts. An older RedHat reference: http://www.redhat.com/support/resources/tips/raid/RAID-4.html Marco - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html