How To Convert MBR To GPT?

Back up all important data

Check that your system supports UEFI boot

Open Disk Management or Command Prompt as administrator

Identify the target disk number

Use a conversion tool such as MBR2GPT or Diskpart

If using MBR2GPT, run `mbr2gpt /validate /disk: /allowFullOS`

If validation succeeds, run `mbr2gpt /convert /disk: /allowFullOS`

If using Diskpart, delete all partitions on the disk first

Open Command Prompt as administrator

Run `diskpart`

Run `list disk`

Run `select disk `

Run `clean`

Run `convert gpt`

Reinstall or restore partitions and data as needed

Enter BIOS or UEFI settings

Change boot mode from Legacy/CSM to UEFI

Save changes and restart the computer