19,1 iMac, Sonoma 14.4.1 to external 4TB TimeMachine backup Disk. Booted into Repair Mode, (Apple+R). Tried to run Disk Utility on a 4 TB external disk. Failed after several attempts w (-69716) Error.
Since i do not have a second 4 TB disk, i couldnt store the data. So i erased the 4 TB...