Solved Reinstall Vista over Windows 7

June 23, 2013 at 06:34:38
Specs: Windows Vista/7
I would like to use my Dell original backup disk to reinstall Windows Vista. The computer was upgraded to Windows 7 about 2 years ago. When I place the Vista disk into the DVD I am able to get to the "Install" selection. However, after clicking the "Install" there is a short delay and then an error message that Windows Vista requires 616 MB of free space to install. The C drive has 235 GB of free space. Why is it giving me this message?

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June 23, 2013 at 11:14:22
✔ Best Answer
You can't install Windows Vista on to the same partition (C:) which is currently occupied by Windows 7. Unless you're performing an upgrade installation (which you aren't), Windows Vista must be installed on a totally empty partition.

Therefore, you need to back up your own files first from the C: drive, then boot from the Vista DVD and delete the existing Windows 7 partition.

That volume will then be listed as "unallocated space".
Now select that unallocated space as the target to install Vista on.
Windows Setup will automatically format that volume, then it will start installing Vista on it.

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June 23, 2013 at 13:28:25
OK, Thanks. I think I will stay with Windows 7 in that case.

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June 23, 2013 at 19:29:51
Win7 & Vista re similar, but Win7 is superior. If you've been running it for 2 years, why would you suddenly want to downgrade?

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