New
#11
Do you mean dual boot configurations?
The tutorial says:
If you have, for some reason, random Windows partitions on your disk that are not part of any installation, I'd ask why.If you dual boot Windows 10 with any other operating system, then do not use this tutorial. This tutorial is only meant for a standalone Windows 10 installation on a PC.
In any event, I would very strongly say clone your disk or create a disk image before attempting such a conversion.
The tutorial does list some indicative error numbers.