T7 SSD drive becomes read only after first Time Machine backup
Hello
I just got a T7 SSD drive to have a TM second back-up, but also to be able to use as external drive. After the first Time Machine backup run, the drives becomes Read only and can't changes writes. I have tried to format in APFS and Also MacOS Journal Extended but same results i can only read the HD.
This is strange, as i have an older WD Passport external drive where my TM backup are stores but also i can use as external drive.
Any idea what the problem is ? is that because it's an SSD. Any help would be greatly appreciated. Thanks
Vadim
MacBook Pro 15″, macOS 12.6