How to Copy GPT Partition Table Between Disks

Sun, 16 Feb 2025 01:30:00 -0500

Why Copy GPT Partition Tables?

When configuring RAID or setting up identical disks, it’s essential to have the same partition tables across all disks. While sfdisk worked well for MBR (msdos) partition tables, it does not support GPT. Fortunately, we can achieve this using sgdisk.

Prerequisites and Safety Checks

Backup Your Data

🔴 WARNING: Always backup important data before manipulating partition tables!

bash
# Create a backup of the partition table
sudo sgdisk --backup=disk1_backup.gpt /dev/sd_src

# Optional: Create full disk image
sudo dd if=/dev/sd_src of=disk1_full_backup.img bs=4M status=progress

Verify Disk Identification

bash
# List all disks with their identifiers
lsblk -o NAME,SIZE,MODEL,SERIAL

# Show detailed disk information
sudo fdisk -l

Install `gdisk`

Install gdisk based on your distribution:

Cloning or Backing Up Drives Remotely Using dd and netcat

Fri, 06 Sep 2024 19:26:00 -0500

In this guide, we will walk through the process of cloning or backing up drives remotely using the powerful combination of dd and netcat. This approach allows for efficient disk copying over a network, making it ideal for remote backups or system migrations.

Disk Management on Support Tools