> Jan 25 15:56:52 linux005 kernel: FAT: bogus logical sector size 783 > Jan 25 15:56:52 linux005 kernel: VFS: Can't find a valid FAT filesystem on dev 5e:20. It looks like the one that really bit me was the changed layout of /proc/dasd/devices that caused me to try to mount the device rather than the partition, as you can see from the dev 5e:20. I'll try it again next time when I format a disk. Rob