Is it possible

I currently have Windows 7 Home premium 32bit on my laptop which i upgraded over Vista 32bit.
If i buy Windows 7 Ultimate full retail version can i install this over my current OS with the 64bit version??

If not i will just buy another hard drive and do a fresh install.
Incidentally, the laptop will work with 64bit.

BTW my current hard drive is one i bought separate so i could keep the original laptop hard drive to one side should i ever wish to put it back in.



Microsoft MVP
Staff member
Microsoft MVP
A clean install is always very much the preferred option and having already run one upgrade install you are likely to be importing even more baggage and I would recommend a clean install especially strongly in this case.

Thanks for that i was thinking it was the best option. I have a program that will only work with XP so using 7 Ultimate in XP compatibility mode will hopefully let the program run.


Microsoft MVP
Staff member
Microsoft MVP
Or you could set your system to dual boot as I have done for software requiring xp.


Extraordinary Member
btw you can't upgrade 32 to 64. well known fact

Installing x64 over x32 will probably work but it won't keep your programs and settings. I would reformat the partition and do a clean install.

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