blockdev

linux

Manage, query, and manipulate block devices.

Examples (8)

Print a report for all devices

sudo blockdev --report

Print a report for a specific device

sudo blockdev --report /dev/sdXY

Get the size of a device in 512-byte sectors

sudo blockdev --getsz /dev/sdXY

Set read-only

sudo blockdev --setro /dev/sdXY

Set read-write

sudo blockdev --setrw /dev/sdXY

Flush buffers

sudo blockdev --flushbufs /dev/sdXY

Get the physical block size

sudo blockdev --getpbsz /dev/sdXY

Set the read-ahead value to 128 sectors

sudo blockdev --setra 128 /dev/sdXY

made by @shridhargupta | data from tldr-pages