mirror of https://github.com/CrimsonTome/tldr.git
30 lines
925 B
Markdown
30 lines
925 B
Markdown
# badblocks
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> Search a device for bad blocks.
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> Some usages of badblocks can cause destructive actions, such as erasing all data on a disk, including the partition table.
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> More information: <https://manned.org/badblocks>.
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- Search a disk for bad blocks by using a non-destructive read-only test:
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`sudo badblocks {{/dev/sdX}}`
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- Search an unmounted disk for bad blocks with a [n]on-destructive read-write test:
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`sudo badblocks -n {{/dev/sdX}}`
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- Search an unmounted disk for bad blocks with a destructive [w]rite test:
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`sudo badblocks -w {{/dev/sdX}}`
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- Use the destructive [w]rite test and [s]how [v]erbose progress:
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`sudo badblocks -svw {{/dev/sdX}}`
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- In destructive mode, [o]utput found blocks to a file:
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`sudo badblocks -o {{path/to/file}} -w {{/dev/sdX}}`
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- Use the destructive mode with improved speed using 4K [b]lock size and 64K block [c]ount:
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`sudo badblocks -w -b {{4096}} -c {{65536}} {{/dev/sdX}}`
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