> On Tuesday, November 30, 2010 01:10:14 pm Brunner, Brian T. wrote: > > Even if the two disks have the same manufacturer and > > manufacturer part number, different firmware revisions can fail to boot after > > dd if=/dev/spinpoint.partnumber.fwrev1 of=/dev/spinpoint.partnumber.fwrev2 > > > Been there, done that, got bit where the sun doesn't shine. > > Care to share specifics? This would be interesting information. 1: a few years back 2: we qualified Hitachi TravelStar lap-top drives (IIRC 20GB) and 3: tried to do our old method of copying a master to the multiple "programmed parts" using a disk duplicator machine (CDC Disk Duplicator, Pro Model) and found that 4: differing FW versions were incompatible (non-bootable), but the file system looked identical/perfect if the drives were mounted on a system that booted elsewhere (eg linux rescue). We found out the two groups of drives had 1 of 2 different FW versions. dd if=/dev/spinpoint.partnumber.fwrev1 of=/dev/spinpoint.partnumber.fwrev1 booted, dd if=/dev/spinpoint.partnumber.fwrev2 of=/dev/spinpoint.partnumber.fwrev2 booted; dd of fw1 to fw2, or of fw2 to fw1, did not boot. We since shifted to another drive brand and size; IIRC the old one is no longer in production; www.pricewatch.com does not list the drive as I recall it. If closer details are /needed/ by anybody, I can go bother the techs to look them up. ******************************************************************* This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This footnote also confirms that this email message has been swept for the presence of computer viruses. www.Hubbell.com - Hubbell Incorporated**