[Nix-dev] Touching second physical hdd causes crash.

[Marc Weber]

while doing so do tail -f /var/log/messages and/or journalctl -f in a
second window, evetually the kernel has time to write something useful.

Make memory check - one run should be enough - the nixos install iso ships with
it.

Try fdisk -l without that second disk - if you have a second way to
attach the same disk - try that, too. (Maybe a cable is bad)..
Eg attach the disk where your first disk is attached and boot from live
iso.

Try something like cat /dev/sdc > /dev/null to make sure that reading
from the disk is not causing any problems. (But only do so if you know
the disk should be fine, otherwise backup your data first).

Try fdisk -l /dev/sdc - instead of fdisk try parted to list partitions.
Try ls -l /dev/sdc* to see whether the kernel finds partitions.

Try totally different system such as "ubuntu live cd" to see whether it
behaves the same way ..

Try different kernel

Which one is most likely to help find out about the problem? No idea.

Maybe somebody else has more ideas.

Marc Weber