Hi all, I have a particular problem.My PC was a single partition Windows 7 upgraded to Windows 10.
I have a single system partition and another one with data. I can't convert to GPT disk, nor with mbr2gpt command (in Windows or using a bootable usb), nor with tools like AOMEI Partition Assistant.
With the mbr2gpt command I have a "Disk layout validation failed" error and with AOMEI if I convert to GPT it causes an error and it convert the disk to GPT deleting all partitions (thank god I can go back re-converting to MBR and restoring partition).
Doing the shrink volume trick with 200MB and 2GB on both partition, the mbr2gpt returns "Cannot find OS partition(s) for disk 0". Funny, because I can boot the PC and I'm writing this post on this PC right now.
I'm almost 100% sure that the problem is that I have no boot nor recovery partition because when I installed Windows 7 i created only one partition and the boot information are on the first partition (I have boot and recovery folder under C:\ with all the needed files).
I also tried to use bootrec commands but with no success (even with creating a FAT32 500MB partition, the bootrec /fixboot command return the Access Denied error and I can't recover from it with bcd command).
There is any way to fix this problem? I need to convert this disk to GPT so I can boot in UEFI mode, I just need that. Obviously without losing data, I wouldn't be here otherwise...
I have a single system partition and another one with data. I can't convert to GPT disk, nor with mbr2gpt command (in Windows or using a bootable usb), nor with tools like AOMEI Partition Assistant.
With the mbr2gpt command I have a "Disk layout validation failed" error and with AOMEI if I convert to GPT it causes an error and it convert the disk to GPT deleting all partitions (thank god I can go back re-converting to MBR and restoring partition).
Doing the shrink volume trick with 200MB and 2GB on both partition, the mbr2gpt returns "Cannot find OS partition(s) for disk 0". Funny, because I can boot the PC and I'm writing this post on this PC right now.
I'm almost 100% sure that the problem is that I have no boot nor recovery partition because when I installed Windows 7 i created only one partition and the boot information are on the first partition (I have boot and recovery folder under C:\ with all the needed files).
I also tried to use bootrec commands but with no success (even with creating a FAT32 500MB partition, the bootrec /fixboot command return the Access Denied error and I can't recover from it with bcd command).
There is any way to fix this problem? I need to convert this disk to GPT so I can boot in UEFI mode, I just need that. Obviously without losing data, I wouldn't be here otherwise...