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'Wipe' SSD before reinstalling Linux?
(slrpnk.net)
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this post was submitted on 07 Aug 2025
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I have been using disktest to overwrite my SSD's.
I overwrite the SSD's before encryption. works just as well on HDD's too.
A 2TB HDD takes about 3.5 hours to overwrite with the encrypted seed
A 250GB SSD takes about 17 minutes to overwrite with the encrypted seed
https://crates.io/crates/disktest
https://github.com/mbuesch/disktest
install with cargo
cargo uninstall disktest
much faster than your usual suspects like dd.
it runs as root: so add this $PATH to the root .bashrc export PATH=/root/.cargo/bin:$PATH
recent test run on 250Gb ssd with just write with no verify:
disktest --write -j0 /dev/nvme0n1
The generated --seed is: omNw4JreY1ZVAfwD4dgooF061R10Ra0vnmYv5SrU Use this seed for subsequent --verify.
Writing /dev/nvme0n1 (512 bytes sectors), starting at position 0 bytes... [15:09 / 00h:00m:10s] Wrote 7.62 GiB (8.18 GB) @ 779.3 MiB/s ...
[15:26 / 00h:17m:16s] Done. Wrote 238.47 GiB (256.06 GB, 256059113472 bytes) @ 235.5 MiB/s. Successfully dropped file caches. Generated --seed omNw4JreY1ZVAfwD4dgooF061R10Ra0vnmYv5SrU
Success!
to check my SSD's I use:
prometheus-smartctl-exporter
sudo smartctl -i -a /dev/nvme0n1