On 01/05/2012 03:11 AM, Arno Wagner wrote: > Well, that is not a LUKS header, that looks like an EFI MBR > or bootsector. There is no trace of the LUKS header. > > Either something is writing this to your disk > or, if this is an USB disk, the USB-to-SATA controller in > the disk may be doing this in violation of the spec, probably > in a misguided atempt to make this thing usable under Windows. > > Is this really /dev/sdb1 and not /dev/sdb and is the partition > still there? > > As to your data, unless you have a LUKS header backup, it is > very likely gone. > > Here is something you can try: Zero the first GB or so of > the drive, sync, reboot and see whether anything is on it. > Then do the same, but unplug the drive while the computer > is on and hotplug it after booting. And finaly do the same > and unplug and replug the drive without booting the computer. > That could give indication of whether the drive is doing > something by itself or whether the PC is writing something. > > Arno OK, I have a good deal of information of what the problem is. The issue seems to happen on two specific computers but not a third. They aren't recognizing the entire hard drive size. fdisk is showing 3tb for /dev/sdb but if I run fdisk on /dev/sdb1 it only shows 2199 GB for size. Now, when I connected this drive to the third machine, it works perfectly. My data is still intact, I can see the LUKS header and I can mount the file system. Now that I've narrowed down the issue, how can I resolve it? Why can't these two computers see the entire drive size? Both are custom builds, the drive was connected directly via SATA Computer #1 Abit KN8 Motherboard BIOS version 6.00 PG AMD Athlon(tm) 64 Processor 3200+ Computer #2 Asus A8N32-SLI-Deluxe Motherboard BIOS version 1303 AMD Athlon(tm) 64 X2 Dual Core Processor 3800+ Do you think I need a BIOS update or am I missing something in the OS? _______________________________________________ dm-crypt mailing list dm-crypt@xxxxxxxx http://www.saout.de/mailman/listinfo/dm-crypt