On Jun 19, 2008, at 11:50 AM, Timmy wrote: > [snip] > > So, I face a problem: How to REBUILD / CLONE sda to sdb with Linux > command mdadm?? :(( > > > Timmy The "simplest" route is to just use dd(1): dd if=/dev/sda of=/dev/sdb bs=1M conv=notrunc,noerror,sync 2>&1 | tee / tmp/dd-errors.log This will create an exact, bootable clone, including partition tables and UUID. It may take a long time, and there is no progress indicator with dd, but it works. If there are errors, you can check the file tee writes. See the dd manpage for more details. Other alternatives include partimage, available here: http://www.partimage.org/Main_Page -- and also, the mdadm command itself -- the short version: set up RAID 1, partitions to Linux raid autodetect, put the first drive (your everyday drive) as the first in the set and the second as the mirror. The md driver should automatically rebuild the mirror for you. Just make sure you partition the disks the same way. There's plenty of information on the web about working with md/mdadm. -- Samuel Halicke [log in to unmask] FNAL/CD/SF/FEF FCC/252/U (T): 630.840.4308 (P): 630.266.0042