1. When to use it
Useful when you need to initialize a new disk or reorganize storage more cleanly than with classic MBR.
gdisk | GPT | partitioning | lsblk | blkid
2. Base setup
gdisk /dev/sdb
partprobe /dev/sdb
lsblk /dev/sdbAdjust host names, IPs, interfaces, paths, and versions to the real system before making the change persistent.
3. Quick verification
gdisk -l /dev/sdb
blkid /dev/sdb*
lsblk -f /dev/sdbConfirm that the output matches the expected state before considering the intervention complete.
4. Operational notes
Confirm the target device twice before writing the table: the operational mistake here costs far more than the time spent rechecking.
Quick checklist
[ ] Steps completed\n[ ] Config updated\n[ ] Tests executed\n[ ] Rollback ready\n[ ] Logs checked