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lsblk on Linux: List Disks, Partitions and Mount Points

· dinesh
lsblk command linux - custom-lsblk-featured.png

lsblk on Linux is the first command after attaching a volume in AWS, Azure, or Proxmox — it shows block devices, partition tree, and mount points without the risk of writing to the wrong disk like a blind fdisk.

Related: mount & fstab,
growpart resize,
df & du.

Default tree view

Shows NAME, MAJ:MIN, RM, SIZE, RO, TYPE, MOUNTPOINTS — enough for most checks.

bashlist
lsblk
lsblk
tree

Filesystem columns

-f adds FSTYPE, FSUUID, and LABEL — matches what you put in fstab.

bashfilesystems
lsblk -f
lsblk -f
UUID

Custom columns

Script-friendly output with -o and -P key=value pairs.

bashcustom
lsblk -o NAME,SIZE,TYPE,FSTYPE,MOUNTPOINT
-o
columns

Before destructive ops

Confirm serial/size in cloud console matches lsblk — especially NVMe device names.

WarningNever run mkfs or wipefs until device identity is double-checked.
nvme
verify

Quick Reference

  • Quick: lsblk
  • UUIDs: lsblk -f
  • Before fdisk: match SIZE to cloud panel

Related tutorials

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