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Catalina update failled mid-way and is stuck due to lack of available disk space. Booted from network drive and deleted files but this only increases purgeable storage and not free disk space. How to turn this purgeable storage into free storage while booted from network drive.

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The purgeable storage is stored in a local snapshot. Apparently you can use the tmutil in terminal to delete these. Not sure how exactly but will update later today after speaking with the genius who fixed my mac.

Update: This is what was explained to me:

  1. Get ids of local snapshots: tmutil listlocalsnapshots path/to/mount/point
  2. Delete local snapshots: tmutil deletelocalsnapshots *snapshot id*
  3. Repeat for all snapshots.

Haven't tested so try at your own risk. Let me know if it works. Worked for me but wasn't there went the steps were preformed.

  • Any word on the final usage of that command? – Mosselman Oct 9 at 16:32
  • @mosselman Updated answer. – lcharbon Oct 9 at 20:47
  • thanks for the update. I went another route as you can see in my question-thread – Mosselman Oct 10 at 8:13

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