Skip to main content

Converting Basic GPT to MBR on C: drive

Thread needs solution

C: drive is Basic GPT running Windows 10, how do I convert it to MBR so I can clone the drive? Acronis Disk Director is installed on C: drive.

0 Users found this helpful
frestogaslorastaswastavewroviwroclolacorashibushurutraciwrubrishabenichikucrijorejenufrilomuwrigaslowrikejawrachosleratiswurelaseriprouobrunoviswosuthitribrepakotritopislivadrauibretisetewrapenuwrapi
Posts: 250
Comments: 7092

Hello Ronald,

The program lets you convert a disk from GPT to MBR with the following implications:

  • All volumes of the disk will be logical
  • Boot volumes (if any) will be unbootable until you convert them to primary volumes—see Converting a logical volume to primary (p. 35) of the attached userguide
  • Volumes that allocate more than 2 TB from the beginning of the disk become inaccessible

To convert a GPT disk to MBR

1. Right-click the GPT disk you need to convert to MBR, and then click Convert to MBR. A warning window will pop up, stating that you are about to convert GPT into MBR. You will be explained the changes that will happen to the system after the chosen disk is converted from GPT to MBR. For example, if such conversion will stop the disk from being accessed by the system, the operating system will stop loading after such conversion or some volumes on the selected GPT disk will not be accessible with MBR (e.g. volumes that allocate more than 2 TB), you will be warned here about such implications.

2. Click OK to add the pending GPT to MBR disk conversion operation.

The results of the pending operation are immediately displayed as if the operation had been performed. To perform the pending operation you will have to commit it (p. 22). Exiting the program without committing the pending operations will effectively cancel them.

Acronis Disk Director 12.5 documentation can be found here https://access.acronis.com/t/3huvmxda 

I'd also recommend reading the following thread https://forum.acronis.com/comment/427871#comment-427871