If you use the option --nousb, all USB devices will be ignored.
They won't show up in the GUI and they won't be wiped if you use
the --nogui --autonuke command. They will even be ignored if you
specifically name them on the command line.
Add verbose option -v, --verbose
Only display thread cancellation info messages, excluding error
messages, only when verbose option is selected.
This helps to keep the log a bit cleaner especially when wiping many
drives simultaneously.
I could not find the original specification of this standard, although
many proprietary implementations exist (or claim to exist). Also there
are many 3rd-party descriptions of the method, which often differ in one
or another detail, but after some reading I could conclude that the most
likely definition should be as follows:
1. Fill the device with zeroes, do not verify.
2. Fill the device with ones, do not verify.
3. Fill the device with a PRNG stream, do verify.
In other words, this is a simplified version of nwipe's "dodshort".
Instead of defaulting to only calling fdatasync at the end of a wipe, it now defaults to calling fdatasync every 1000000 blocks. This shows a unresponsive drive far quicker and also allows wipe threads to complete and be cancelled within a couple of seconds if a wipe is aborted with control-c.
1. When running nwipe in a 80x24 terminal such as ALT-F2 or shredos the line length needs to limited to 80 characters otherwise the text looks misaligned.
2. Added a line between each option to make it more legible.
