dd command allows you to duplicate or clone drives exactly - the target will have the same permissions, formatting and media name.
If the source drive is LUKS encrypted, the target drive will have exactly the same encryption state, and will be unlocked by the same passphrase as the original.
I find this useful for making cloned copies of thumbdrives containing password databases.
This can be achieved with the
In this case,
/dev/sdc is the source (or ‘input file’ in
dd parlance) and
/dev/sdd is the target (or ‘output file’).
Make sure you correctly identify the drives - especially the output/target, since
dd will overwrite all data. In this case, we can easily identify the pair of thumbdrives based on their size.
When finished, the new drive will be an exact copy - with the same identifier. As such, it won’t be possible to mount the original and the clone at the same time.
Because of this, if you want to repeat the process you may need to temporarily change the passphrase on the target drive, or wipe it altogether. To wipe the drive:
comments powered by Disqus