badblocks
Search a device for bad blocks. tldr-pages
On several platforms
Several platforms
Search a device for bad blocks. Some usages of badblocks can cause destructive actions, such as erasing all data on a disk, including the partition table.
Search a disk for bad blocks by using a non-destructive read-only test
sudo badblocks /dev/sdXIdentifySearch an unmounted disk for bad blocks with a non-destructive read-write test
sudo badblocks -n /dev/sdXIdentifySearch an unmounted disk for bad blocks with a destructive write test
sudo badblocks -w /dev/sdXIdentifyUse the destructive write test and show verbose progress
sudo badblocks -svw /dev/sdXIdentifyIn destructive mode, output found blocks to a file
sudo badblocks -o path/to/file -w /dev/sdXIdentifyUse the destructive mode with improved speed using 4K block size and 64K block count
sudo badblocks -w -b 4096 -c 65536 /dev/sdXIdentify