Linux Disk Management Guía rápida

Manage disks, partitions, and filesystems.

What this cheat sheet is for

This linux disk management reference helps you complete common developer tasks quickly and avoid repeated trial-and-error when working under deadlines.

When you need a reliable command or pattern during debugging and incident response.
When you are implementing a feature and want a known-good syntax example immediately.
When onboarding teammates and documenting repeatable workflows for daily use.
When reviewing pull requests and verifying that command usage follows best practices.

Disk Space Usage

Show disk space.

df -h
df -h /home
df -i

Directory Size

Calculate directory size.

du -sh directory/
du -h --max-depth=1
du -sh * | sort -h

Mount Filesystem

Mount partitions.

mount /dev/sdb1 /mnt
mount -o ro /dev/sdb1 /mnt
mount | column -t

Unmount

Unmount filesystems.

umount /mnt
umount -f /mnt
umount -l /mnt

Disk Partitions

Partition management.

fdisk -l
sudo fdisk /dev/sdb
parted /dev/sdb

Create Filesystem

Format partitions.

mkfs.ext4 /dev/sdb1
mkfs.xfs /dev/sdb1
mkfs.vfat /dev/sdb1

Check Filesystem

Verify and repair.

fsck /dev/sdb1
e2fsck /dev/sdb1

List Block Devices

Show all block devices.

lsblk
lsblk -f

Common mistakes / Errores comunes

People often copy a command or pattern without adapting placeholders, which can break production workflows unexpectedly.
It is easy to forget environment-specific differences, so always verify behavior in your shell, runtime, or API gateway before shipping.
Many errors come from skipping small validation steps, so test with realistic sample input before relying on the result.

Last updated: February 2026