Macintosh HD and Macintosh HD Data?

If you were to actually read some of the other posts, the answers have already been posted. Catalina has 2 partitions, one protected that you can read only and the Data volume which contains your User folder, apps, etc. which you can read/write to.

The Macintosh HD volume itself should NOT contain your user folder. It should be in the Data volume. Go into recovery, erase your entire drive and reinstall from scratch. You should than have one Mac HD folder (read only) and one Mac HD - Data folder which, while invisible, will contain all your data, user folder, apps, etc.

I do not appreciate your condescending tone. I have had to pay to have someone help reformat my computer because of issues with Catalina. My User fielder is now in the HD folder and not the HD-Data folder. I have never had a reason to post in this forum but the rude responses I have received will deter me from ever posting again.

One is a read-only volume with the OS. The other is read/write for a user data.

I have the same problem. There are two Data discs. I can't back it up until I rename one of the discs.

Yes, as long as you follow Apple's instructions, you won't have a problem:

https://support.apple.com/en-us/HT208496

See the Apple Recommended post at the top of this page.

and these instructions to undo the partitioning:https://support.apple.com/en-us/HT208496