Hugo Vanwoerkom wrote: > I can run smartctl on a SATA disk: > > smartctl -d ata -A -v 194,unknown /dev/sda > > but when I run it on a USB disk: > > smartctl -d ata -A -v 194,unknown /dev/sdb > > I get: > > Smartctl: Device Read Identity Failed (not an ATA/ATAPI device) > > But it *is* an ATA disk. > > Anybody? Bad news, to be found on smartctl's homepage http://smartmontools.sourceforge.net/#testinghelp Johannes