On 10 December 2015 at 20:54, H McCurdy <hmccurdy@xxxxxxxxx> wrote: > > The question is what happens if you try to write many zeros to the device. > Does it work or does it throw an error? > > dd if=/dev/zero of=/dev/sdb1 bs=4096 count=2500 conv=sync > Hello again, The dd command goes on ok, but still the cryptsetup initialisation fails - and with the same error (see below). I start suspecting this is an issue with the hardware itself. Are there other tests I could conduct? Thank you, Luís $ sudo dd if=/dev/zero of=/dev/sdb1 bs=4096 count=2500 conv=sync 2500+0 records in 2500+0 records out 10240000 bytes (10 MB) copied, 0.579948 s, 17.7 MB/s $ sudo cryptsetup -y -v luksFormat /dev/sdb1 WARNING! ======== This will overwrite data on /dev/sdb1 irrevocably. Are you sure? (Type uppercase yes): YES Enter passphrase: Verify passphrase: Cannot wipe header on device /dev/sdb1. Command failed with code 5: Cannot wipe header on device /dev/sdb1. _______________________________________________ dm-crypt mailing list dm-crypt@xxxxxxxx http://www.saout.de/mailman/listinfo/dm-crypt
