Can't Turn a TM Backup disk into a Regular disk

[MacDaddi]

OK I'm no newbie but this one has me stumped. I can put file onto a Time machine backup disk that I don't use as a backup anymore but I can't take them off. The Disk still has some backups on it that I would like to keep. But I would like to use the extra space for regular file storage. What gives. When putting a file on the disk it asks for the password but moving them to the trash it will delete everything in the folder but it won't actually delete the root folder.😕😕😕

So my question is
1. Can I use the disk and keep the backups on it?
2. How do I get permission to read and write to the disk

 

[spinnerlys]

Yes you can use the disk with the back ups still on it.

Is Time Machine switched off?

For permissions to read and write, select the HDD, Get Info (CMD + I), and look under Ownership and Permissions, if your user has all the rights. If not, you can set it to.