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Last edited by Brink; 21 Jul 2017 at 16:20.
It´s possible to “convert” the disk back to MBR. For example:
- Boot from a boot UFD with Macrium.
- Create a backup image of the disk in an external USB disk.
- With diskpart, clean the internal disk. This will convert it to MBR.
- Restore the Windows partition.
- Disconnect the external disk.
- Use “Fix Boot Problems” from the UFD to create the boot files in the Windows partition.
- Try a boot.
Thanks for the help, decided to reinstall to mbr. I followed instructions here
Convert GPT Disk to MBR Disk - Windows 7 Help Forums
to convert back without incident. Will be doing extensive research before ever trying that again.
I'm glad you were able to get it sorted DaLee. Thank you for posting back with your results.
Here are some more options for GPT to MBR to help others.
Convert GPT Disk to MBR Disk in Windows 10 Windows 10 Hardware Drivers Tutorials
thnak you for your thread
hi about dual boot warning
i have 3 ssd , with windows 10 , 8.1 and 7
but in every operation system ,i have disabled the ssd in the device manager
i mean for example in w10 ,device manager i have disabled the w8.1 and w7 ssd
to boot in w10 or 7 i use the bios F8
is my case a dual boot ? and the warning in the guide is refering me to avoid the procedure?
and is there a way to convert my w8 and 7 in Uefi?
thanks
Hello drugo, :)
It's not recommended to use this in a mutiboot OS setup since it would most likely break being able to select an OS at boot. Of course, this also doesn't officially support Windows 7 or Windows 8.
In your situation, you may need to start from scratch installing everything with UEFI to do so.