1. Converting using the Windows interface
- Back up or move the data on the basic MBR disk you want to convert into a GPT disk.
- If the disk contains any partitions or volumes, right-click each and then click Delete Partition or Delete Volume.
- Right-click the MBR disk that you want to change into a GPT disk, and then click Convert to GPT Disk.
2. Converting using the Commend Line
- Use the following steps to convert an empty MBR disk to a GPT disk. There's also a MBR2GPT.EXE tool that you can use, but it's a little complicated - see Convert MBR partition to GPT for more details.
- Back up or move the data on the basic MBR disk you want to convert into a GPT disk.
- Open an elevated command prompt by right-clicking Command Prompt and then choosing Run as Administrator.
- Type diskpart. If the disk does not contain any partitions or volumes, skip to step 6.
- At the DISKPART prompt, type list disk. Note the disk number you want to convert.
- At the DISKPART prompt, type select disk <disknumber>.
- At the DISKPART prompt, type clean.
Warring Note
Running the clean command will delete all partitions or volumes on the disk.
- At the DISKPART prompt, type convert gpt.
| Value | Description |
|---|---|
| list disk | Displays a list of disks and information about them, such as their size, the amount of available free space, whether the disk is a basic or dynamic disk, and whether the disk uses the Master Boot Record (MBR) or GUID Partition Table (GPT) partition style. The disk marked with an asterisk (*) has focus. |
| select disk disknumber | Selects the specified disk, where disknumber is the disk number, and gives it focus. |
| clean | Removes all partitions or volumes from the disk with focus. |
| convert gpt | Converts an empty basic disk with the Master Boot Record (MBR) partition style into a basic disk with the GUID Partition Table (GPT) partition style. |