Deleting folders on old HDD in new PC

[TprSmid]

Hi,

I've recently built my first PC, using mostly new components but with 2 x HDDs (and a PSU) from my old one.

I've installed a new copy of Windows 7 (my old one was an OEM version and therefore couldn't be transferred) onto a new SSD which is now my C: drive. I booted the PC up without the HDDs attached initially, installed and updated Windows, and then physically connected the old HDDs.

However, I want to clean them up by deleting old programs, including my old copy of Windows 7.

However, when I try to delete many of the folders I often get the message:

"You need permission to perform this action.

You require permission from TrustedInstaller to make changes to this folder".

The options then are Try Again or Cancel.

I could copy stuff I want to keep to the other HDD or my external HDD, and then reformat the drive, but that's a bit extreme and I'll then have to reinstall a whole bunch of stuff I'd rather not lose.

Also, when I try to launch any of the programs installed on the old HDD, I get a variety of error messages (and they don't load).

Any advice welcomed!

Cheers.

 

[USAFRet]

I could copy stuff I want to keep to the other HDD or my external HDD, and then reformat the drive, but that's a bit extreme and I'll then have to reinstall a whole bunch of stuff I'd rather not lose.

That is what you must do. Applications from the old drive/old install will not work on the new install. As you have seen.