Parallels 5: upgrade from Vista to Win 7: annoying deadlock

Posted by nobody on Super User See other posts from Super User or by nobody
Published on 2010-04-29T03:19:04Z Indexed on 2010/04/29 3:27 UTC
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What I have: Parallels 5, Vista installed. Trying to upgrade to Win 7.

I have the Win7 .iso mounted as a DVD to my virtual machine.

When I start the machine from this DVD, and attempt the upgrade, I'm told (paraphrased) "You booted from DVD. Don't do this. Reboot, then insert the DVD, commence the upgrade from there."

But when I try that, the upgrade keeps failing because "There is not enough disk space". I've proven this is a red herring of an error message; the real problem is the installer can't find -any- disk drives. When I instead choose the "Advanced" install, and I am prompted to choose the disk drive, there aren't any to choose from.

How do unblock this deadlock?

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