Save GPT headers and partition entries to a file.
Section: Images and Clones
Backup a GPT partition table
bash
bash
sudo sgdisk --backup=gpt.backup /dev/sdbExplanation
Save GPT headers and partition entries to a file.
Learn the surrounding workflow
Compare similar commands or jump into common fixes when this command is part of a bigger troubleshooting path.
Related commands
Same sheet · prioritizing Images and Clones
Restore a GPT partition table backup
Restore GPT layout from a saved backup file.
Write a raw image back to disk
Restore a disk image onto a target device.
Recover an unhealthy disk with ddrescue
Preferred over dd for failing disks because it tracks progress and retries.
Inspect a virtual disk image
Show image format, virtual size, and backing file info.
Convert a virtual disk image
Convert between raw, qcow2, and other image formats.