Forum Discussion
mbr2gpt Disk Validation Failed
- Nov 21, 2021
As per above screenshot, mbr2gpt tool required the OS partition as mentioned in Microsoft's official document as below:
https://docs.microsoft.com/en-us/windows/deployment/mbr-to-gpt#disk-prerequisites
- SalmanAhmedOct 28, 2021Steel Contributor
Hi Blackskull,
Thanks for contacting me, as I can see from the screenshot:
- Your drive c: from disk0 has 70% free space which is more than enough
- You also have a system drive (c:) in your disk0
- You have active partition (c:)
- You don't have more than 3 partitions on disk0, which is also good.
Therefore, I'd suggest to shrink your drive c: and create another partition of 2GB. After this step try to validate the configuration by mbr2gpt tool. I hope this step will be a useful for you.
- TammerAbOct 08, 2021Copper ContributorThe above screenshot shows that Disk 1 is my primary partition, it contains the OS, there is no logical partition, there is only 2 partitions on that disk and the partition is active.
I've read the documentation. I do not see anything I am doing that does not match the documentation.
Apologies if I am missing something obvious but it would be helpful to me if you can point to something I am doing wrong. No need to post the documents I've read before. - SalmanAhmedOct 10, 2021Steel Contributor
Did you try to shrink your C: drive? I will suggest you to shrink the drive and make 1 more primary partition of 4GB at the end of the disk. Let's give it another try.
- BlackskullOct 28, 2021Copper Contributor
I am having the exact same problem with the exception that my primary boot disk with the OS is disk 0. It has two partitions one being the active boot partition and the second being the recovery partition. I have tried several times but it always fails.
- TammerAbNov 20, 2021Copper Contributor
- SalmanAhmedNov 21, 2021Steel Contributor
Hi TammerAb,
Please share latest screenshot from disk management console, that will be helpful to identify the point of failure.
- TammerAbNov 21, 2021Copper Contributor
- BlackskullNov 21, 2021Copper Contributor
hello SalmanAhmed i tried what you suggested and the program still failed.
- SalmanAhmedNov 21, 2021Steel Contributor
Hi Blackskull
Please confirm that all of your 3 partitions are primary partition, the requirement says that the disk should not have any extended/logical partition.
- BlackskullNov 22, 2021Copper Contributor
Hello SalmanAhmed 2 of the partitions are primary the third is the recovery partition and I can't change it.