snippetbashTip
badblocks — Search a device for bad blocks. Some usages of badblocks can cause destructive actions, such as eras
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commandbadblockssearchclifordeviceblocksbad
Problem
How to use the
badblocks command: 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. More information: <https://manned.org/badblocks>.Solution
badblocks — 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. More information: <https://manned.org/badblocks>.Search a disk for bad blocks by using a non-destructive read-only test:
sudo badblocks {{/dev/sdX}}Search an unmounted disk for bad blocks with a [n]on-destructive read-write test:
sudo badblocks -n {{/dev/sdX}}Search an unmounted disk for bad blocks with a destructive [w]rite test:
sudo badblocks -w {{/dev/sdX}}Use the destructive [w]rite test and [s]how [v]erbose progress:
sudo badblocks -svw {{/dev/sdX}}In destructive mode, [o]utput found blocks to a file:
sudo badblocks -o {{path/to/file}} -w {{/dev/sdX}}Use the destructive mode with improved speed using 4K [b]lock size and 64K block [c]ount:
sudo badblocks -w -b {{4096}} -c {{65536}} {{/dev/sdX}}Code Snippets
Search a disk for bad blocks by using a non-destructive read-only test
sudo badblocks {{/dev/sdX}}Search an unmounted disk for bad blocks with a [n]on-destructive read-write test
sudo badblocks -n {{/dev/sdX}}Search an unmounted disk for bad blocks with a destructive [w]rite test
sudo badblocks -w {{/dev/sdX}}Use the destructive [w]rite test and [s]how [v]erbose progress
sudo badblocks -svw {{/dev/sdX}}In destructive mode, [o]utput found blocks to a file
sudo badblocks -o {{path/to/file}} -w {{/dev/sdX}}Context
tldr-pages: common/badblocks
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