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tldr/pages/common/badblocks.md
Starbeamrainbowlabs 10e9f9d2af badblocks: add page (#1399)
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badblocks

Search a device for bad blocks. Some usages of badblocks can cause destructive actions, such as erasing all the 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/sda}}

  • Search an unmounted disk for bad blocks with a non-destructive read-write test:

sudo badblocks -n {{/dev/sda}}

  • Search an unmounted disk for bad blocks with a destructive write test:

sudo badblocks -w {{/dev/sda}}