I have a Time Machine partition on an external USB HD along with two other partitions.
As of yesterday afternoon, the Time Machine partition does not mount.
The other partitions DO mount and operate normally.
What I have tried so far:
Thanks for your help
MacBook Pro 13″, macOS 10.15
you may need to set that partition up again, which would affect the other two partitions
This is bad advice.
Following a suggestion on another thread I simply left the disk connected overnight - the issue resolved itself (after 12+ hours).
There's currently a 12-page thread (and growing) full of frustrated users also experiencing this issue.
you may need to set that partition up again, which would affect the other two partitions
This is bad advice.
Following a suggestion on another thread I simply left the disk connected overnight - the issue resolved itself (after 12+ hours).
There's currently a 12-page thread (and growing) full of frustrated users also experiencing this issue.
Hello saddlemeyer,
Thank you for using Apple Support Communities.
We see that your Time Machine partition is not mounting and the error messages from Disk Utility. It appears that the partition for Time Machine has become damaged and is not repairable. The error when you try to erase the partition is indicating something with the identification blocks for that partition and you may need to set that partition up again, which would affect the other two partitions.
You will want to backup the data on those two partitions first and then take a look at the following support article to partition the disk.
Partition a physical disk in Disk Utility on Mac - Apple Support
Best regards.
Unable to mount Time Machine partition in 10.15.6
