Disk health

• Tools like stress-ng or stressant can also test disks, see ../hardware-testing.md
• See also ./smart.md

Hard disk sentinel

• Hard Disk Sentinel Linux Edition
• display hard disk / solid state disk information on the terminal
• Freeware

Badblocks

• Fix online badblocks reported by smart

Read-Only Mode

badblocks -sv /dev/sdX # readonly
badblocks -sv -n -p 3 /dev/sdX # Safe read/write mode

RW-Mode

Warning!

badblocks -sv -w /dev/sdX
badblocks -b 4096 -p 3 -s -v -w /dev/hdX
badblocks -swv /dev/sdX

Speed up badblocks

https://superuser.com/a/798883

time badblocks -svw -b 4096 -c 65536 -t 0 /dev/sdX

Takes ~30h for a 6 TB SATA drive.