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time machine – Exterior APFS SSD partition stops mounting after some time mount even after erasing/reformatting


I’ve been making an attempt to make use of an APFS partitioned Samsung T7 protect 2TB for a few weeks now however hold working into the identical subject. After a number of days of use, one among my partitions will now not mount.

OS model: macOS Massive Sur 11.7.4

Particulars:

  • All SSD partitions formatted as APFS
  • 1 TB allotted to file storage (archival)
  • 700 GB allotted to a Time Machine partition
  • 300 GB allotted for recordsdata in use in the meanwhile (i.e. audio, video, paperwork and many others)

The 300GB Partition has been exlcuded from the time machine backup nonetheless the 1TB partition is included within the backup.

Overtiew of formatted SSD

1TB Archival partition details

Partition particulars (the one that’s at present not mounting):

Partition info

What I’ve tried:

  1. Mounting utilizing Disk Utility
    Returns “DiskManagement.disenter error 49218”

Disk Mount Error

  1. Repairing drive utilizing first assist
    Outcomes: runs with out error, exit standing 0

First Aid Results

  1. Killing FSCK course of through terminal
  2. Repairing the amount via the command line
  3. Making an attempt otherwise sized volumes
  4. Utilizing volumes with measurement quotas as a substitute of containers

On this occasion it’s the 1TB partition that won’t mount however I’ve additionally had or not it’s the 300GB partition (which isn’t included within the time machine backup).

The strangest factor to me is that even after erasing the entire SSD, after which re-adding the partitions. The problem nonetheless persists (no matter whether or not I do or dont switch any recordsdata onto the drive).

I’ve copies of many of the recordsdata saved on this SSD on a unique drive so shedding a pair issues will not be the top of the world however the irritating factor is that this subject retains returning.

Frankly I hope that I’m simply making a foolish mistake and that somebody will probably be comfortable to level it out. I cant say that I’m very skilled or knowledgable on this area so any concepts or options could be enormously appreciated.

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