Black Magic ids NVMe as Read Only

[dotzero123]

Purchased an enclosure and a 1 tb NVMe. My backup went smoothly, but when I tried to measure my drive's speed Black Magic identified the drive as 'read only.' The only highlighted file that I saw was cache. Am I doing it wrong? Thanks for any advice.

 

[Bigwaff]

My backup went smoothly, but when I tried to measure my drive's speed Black Magic identified the drive as 'read only.'

Time Machine volumes are read-only except for the Time Machine processes. You will need to either erase the volume or add another APFS volume to the drive in order to use Black Magic Speed Test.

 

[dotzero123]

Thank you - this was what i needed to know.