> > mdadm -S /dev/md0 > > mdadm -A /dev/md0 --force /dev/sd[abd] > > mdadm /dev/md0 --add /dev/sdc > > > All the command line tricks in the world will not change the fact that > his IEEE1394 drive subsystem is presenting one or more of his drives as > read only devices.. Well, the command line tricks did at least get me past the first roadblock and the array started recovering. (Thank you, Neil!) However perhaps you are onto something, as the recovery failed halfway through with "CRC" errors. Running badblocks on the faulty disk generates lots of these errors in my log: Apr 19 09:14:52 pingo kernel: ata2: command 0x25 timeout, stat 0xd0 host_stat 0x61 Apr 19 09:14:52 pingo kernel: ata2: status=0xd0 { Busy } Apr 19 09:14:52 pingo kernel: SCSI error : <1 0 0 0> return code = 0x8000002 Apr 19 09:14:52 pingo kernel: sdc: Current: sense key: Aborted Command Apr 19 09:14:52 pingo kernel: Additional sense: Scsi parity error Apr 19 09:14:52 pingo kernel: end_request: I/O error, dev sdc, sector 344 Apr 19 09:14:52 pingo kernel: Buffer I/O error on device sdc, logical block 43 Apr 19 09:14:52 pingo kernel: ATA: abnormal status 0xD0 on port 0x5007 Is this symptomatic of the IEEE1394 problem you mention? I really wasn't doing anything special here. I'm using out-of-the-box packages on Mandriva 2006, not compiling kernel modules by hand. And all I did was plug in a camcorder... -- Analog-/ISDN-Nutzer sparen mit GMX SmartSurfer bis zu 70%! Kostenlos downloaden: http://www.gmx.net/de/go/smartsurfer - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html