Solved 100Mb system drive preventing Windows Upgrade

[P2502]

Hi.

I'm trying to upgrade my w7 home premium to professional but ran into a problem I can't solve.

As you can see, drive I: is actually the 100Mb drive created by Windows which normally doesn't have a drive letter but apparently gets assigned one when checking compatibility.

What to do?

 

[P2502]

Fixed it by copying bcd files to c: and marking it active.

 

[gregrocker]

You should also run a few Startup repairs to complete making C self boot.