Disk Partitions & Filesystems

Articles in Disk Partitions & Filesystems

• How to securely wipe blocks → blkdiscard /dev/sdX (SSD)

  Learn how to securely wipe SSD blocks using blkdiscard command. Complete guide with step-by-step instructions, safety tips, and troubleshooting for Linux users.

• How to rescue copies → ddrescue /dev/sdX /path.img /path.map

  Master ddrescue data recovery with this comprehensive guide. Learn to rescue damaged drives using ddrescue /dev/sdX /path.img /path.map with examples and troubleshooting.

• How to image/copy disks → dd if=/dev/sdX of=/path.img bs=4M status=progress

  Learn how to create disk images using the dd command in Linux. Complete guide with step-by-step instructions, examples, and troubleshooting tips for safe disk copying.

• How to view SMART health → smartctl -a /dev/sdX

  Learn how to monitor hard drive health using SMART technology with smartctl commands. Complete guide with examples, troubleshooting, and best practices.

• How to test disk speed → hdparm -Tt /dev/sdX

  Learn how to test disk speed using hdparm -Tt command. Complete guide with examples, troubleshooting, and best practices for Linux disk performance testing.

• How to manage swap → mkswap /dev/...; swapon -a; swapoff -a

  Learn how to manage Linux swap space with mkswap, swapon, and swapoff commands. Complete guide with step-by-step instructions, examples, and troubleshooting tips.

• How to mount/unmount → mount /dev/... /mnt; umount /mnt

  Learn how to mount and unmount storage devices in Linux using mount and umount commands. Complete guide with examples, troubleshooting, and best practices.

• How to repair XFS → xfs_repair /dev/..

  Complete guide to repairing XFS filesystems using xfs_repair command. Learn step-by-step procedures, troubleshooting, and best practices for fixing corrupted XFS drives.

• How to grow XFS → xfs_growfs

  Learn how to expand XFS filesystems using xfs_growfs command. Complete guide with step-by-step instructions, examples, troubleshooting, and best practices.

• How to resize ext filesystem → resize2fs /dev/..

  Learn how to resize ext2, ext3, and ext4 filesystems using resize2fs command. Complete guide with examples, troubleshooting, and best practices for Linux administrators.

• How to check/repair ext → e2fsck -f /dev/..

  Learn how to check and repair ext2/ext3/ext4 filesystems using e2fsck command. Complete guide with examples, troubleshooting, and best practices for Linux users.

• How to create filesystems → mkfs.ext4|mkfs.xfs|mkfs.btrfs /dev/..

  Learn to create filesystems using mkfs.ext4, mkfs.xfs, and mkfs.btrfs commands. Complete guide with examples, best practices, and troubleshooting tips.

• How to map partitions to devices → kpartx -av /dev/loop0

  Learn how to map partitions to devices using kpartx -av /dev/loop0. Complete guide with examples, troubleshooting, and best practices for Linux partition mapping.

• How to inform kernel of table changes → partprobe /dev/sdX

  Learn how to use partprobe to inform the Linux kernel of partition table changes without rebooting. Complete guide with examples, troubleshooting, and best practices.

• How to non‑interactive partition → parted /dev/sdX

  Learn how to use parted for non-interactive disk partitioning on Linux. Complete guide with commands, examples, automation scripts, and troubleshooting tips.

• How to (g)partition disks → fdisk /dev/sdX; gdisk /dev/nvme0n1

  Learn how to partition disks using fdisk and gdisk commands. Complete guide covering MBR and GPT partitioning with step-by-step instructions and examples.

• How to list block devices/UUIDs → lsblk -f; blkid

  Learn how to list block devices and UUIDs using lsblk -f and blkid commands. Complete guide with examples, troubleshooting, and best practices for Linux systems.