Catalina and Windows 8.1

Rockis69 wrote:

Hi. I installed Catalina without first upgrading my Windows 8.1.

Was using Parallels.

Now I cannot start Windows and cannot access any of my data on the Windows side.

Data is still there, just can't get to it.

Meanwhile, I have partitioned a new section and installed Windows 10 via Boot Camp.

Re-installed my Windows apps too.

Now I just need to extract my data files from the "Win8.1 side" so I can use it on the Win10 side.

Genius Bar can't touch it and Parallels Tech Support is completely unresponsive.

Now I am relegated to pleading for help from strangers.

LOL!

Any guidance or more info from anyone would be GREATLY appreciated.

Thx,

MG

My advise would of been— revert back to your macOS that was still supporting your Win8.1—update to Windows 10.

Then update you macOS.

This of course would be from your backups

Revert your Mac to a previous macOS version
https://support.apple.com/en-lamr/guide/mac-help/mh15216/10.15/mac/10.15

Short of that I would simply wait for Parallels Tech Support to get back to you.