Windows 10 - no system reserved partition, needs Windows 7 CD to boot

Rowan1980

Reputable
Oct 18, 2015
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0
4,510
Hi,

I recently upgraded to windows 10 from windows 7. I had issues with windows 10 installing due to a small system reserved partition (25mg). To cut a long story short, I now have windows 10 installed but it requires the old windows 7 boot disk otherwise it says "Boot from CD/DVD: Missing Operating System". I have added a 500mg system reserved partition (with no drive letter) but am too scared to make it active without first putting the files in it that are required to boot the computer. Can anyone tell me what files I can copy into there? Is it just boot mgr? any others?

Thanks

Rowan