Smartd

config file

# First (primary) ATA/IDE hard disk.  Monitor all attributes, enable
# automatic online data collection, automatic Attribute autosave, and
# start a short self-test every day between 2-3am, and a long self test
# Saturdays between 3-4am.
/dev/sda -d ata -a -o on -S on -s (S/../.././02|L/../../6/03)
/dev/sdb -d ata -a -o on -S on -s (S/../.././02|L/../../6/03)
/dev/sdc -d ata -a -o on -S on -s (S/../.././02|L/../../6/03)
/dev/sdd -d ata -a -o on -S on -s (S/../.././02|L/../../6/03)

long surface test

long-type surface scan which should find and 'move/remap' the bad sectors.

use rescue disk (or mint, I suppose), just don't want to be using 'sda' at all during test.

smartctl -t long /dev/sda

get device infos

show ALL device infos

smartctl --xall