Forum Discussion
TammerAb
Oct 06, 2021Copper Contributor
mbr2gpt Disk Validation Failed
I've been trying to get the mbr2gpt Program to work and no matter what I do it will not work This is the command I try to run mbr2gpt /allowFullOS /disk:1 /validate DISKPART> list disk Di...
- Nov 21, 2021
SalmanAhmed
Oct 08, 2021Steel Contributor
As I can see from the screenshot you shared, I can't see an Active partition on disk1. There is one more condition from prerequisites as below:
- One primary partition must be active, try to activate your first partition (c:) from disk 1.
I am sharing two screenshots, before and after the active partition.
mbr2gpt tool validation result without active partitionmbr2gpt tool validation result with active partition
TammerAb
Oct 08, 2021Copper Contributor
- SalmanAhmedOct 08, 2021Steel Contributor
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- 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.- Naeem86Dec 04, 2021Copper ContributorTammerAb
I went through all your exchange with salman.
My guess is here is your disk 0 contains the system resevered portion that needs to be with the boot drive, in your case disk 1. You cam see from my screen shots that both my older ssd and new ssd have the system resevered on the same disk as the boot.
Perhaps also try setting the recovery partition as a primary partition or making active or both if one does not work.
I have attached screenshots of my old system ssd which i copied to my new ssd and then i converteded to gpt. So i ran the validation on the old ssd which os still mbr and validation passed.
I have data drives as well and their description does not state they are system as is your case. I also do not have any recovery partitions. I can only assume that might be causing issues as its not a primary partition.
post back of this helped in anyway.