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37 lines
676 B
Markdown
37 lines
676 B
Markdown
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# blockdev
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> Manage, query, and manipulate block devices.
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> More information: <https://manned.org/blockdev>.
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- Print a report for all devices:
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`sudo blockdev --report`
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- Print a report for a specific device:
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`sudo blockdev --report {{/dev/sdXY}}`
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- Get the size of a device in 512-byte sectors:
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`sudo blockdev --getsz {{/dev/sdXY}}`
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- Set read-only:
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`sudo blockdev --setro {{/dev/sdXY}}`
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- Set read-write:
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`sudo blockdev --setrw {{/dev/sdXY}}`
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- Flush buffers:
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`sudo blockdev --flushbufs {{/dev/sdXY}}`
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- Get the physical block size:
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`sudo blockdev --getpbsz {{/dev/sdXY}}`
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- Set the read-ahead value to 128 sectors:
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`sudo blockdev --setra 128 {{/dev/sdXY}}`
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