Upgrade from Vista to 7. I lost 300GB of hard drive


Excellent Member
Microsoft Community Contributor
I thought most OEMs put their recovery partitions on unlettered, hidden partitions. It is easy to get partitions mixed up, and I can certainly testify to that. Believing there should be more room, would certainly add to the confusion.

But so far, nothing has explained why a 640 GB drive has turned into a 320 GB drive. It is like one platter is missing, so I have to assume something is causing the drive to be misidentified. I suppose certain types of drive failures could be responsible..

And one more note, Windows 8 is setting up a recovery partition on its installs...

What we need, is to reach some solution. What options are available knowing a Upgrade version of Windows 7 is being used?

I know what I would do. If Vista was still on the drive at all, and it may still be in the C: partition, I would do a Custom Install and remake the partitions prior to the install. Giving Windows 7 around 120 GB would be more than enough for it and you could re-image the install to a larger drive if you wanted.

If not that, possibly call Dell and get recovery media from them. Reinstall Vista, just because of the Upgrade requirement. If the drive still showed a problem, I would get a new drive and start from scratch.

So, whatever you decide, let us know if we can help.


Extraordinary Member
And one more note, Windows 8 is setting up a recovery partition on its installs...
Not on my systems.

Thanks for all the suggestions. I tried to reset BIOS, for some reason I can not save and exit, just exit. Not sure how to make that work for me beyond that. I tried the F11 but it takes me to a screen similar to F8, which means my only options are to restore to last known good configuration which unfortunately is when I installed the upgrade.
I probably should have re imaged my drive prior to the upgrade but I did not anticipate this kind of disaster...honestly the plan was to get everything installed and then do an image so I would have a clean set up that contained my software. I did not really want or care about anything that was currently on the laptop.
I have contacted Dell but they are relatively useless, they only suggest doing factory reset which I mentioned on numerous occasions that I can not access. The only thing I have pertaining to Vista is my code. Perhaps I can find someone and borrow a copy to reinstall and use my code. At this point I'm willing to do anything.


Extraordinary Member
I don't believe that. You can always save the BIOS settings - it is often via F10. Try again. Else flash the BIOS with the latest version from your manufacturers website.

You try hitting Delete??

This website is not affiliated, owned, or endorsed by Microsoft Corporation. It is a member of the Microsoft Partner Program.