Catalina killing my 500GB SD storage

When will they fix Catalina from using 90% of my 500GB SD?

MacBook Pro 15”, macOS 10.15

Posted on Nov 29, 2019 12:48 PM

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Question marked as Top-ranking reply

Posted on Nov 30, 2019 12:25 PM

Ok, there's the issue. Something went amiss with the installation. Your Mac should not have multiple "Macintosh HD - Data" volumes ... only one. We have seen this on a number of posts here.


At this point, you should make sure that you have a good backup. Then you have a few choices:

  1. Use Recovery Mode to first completely erase the drive, and then, install a clean copy of macOS Catalina. (recommended)
  2. Attempt to delete the extra Macintosh HD - Data volumes. This can be performed with the Disk Utility in Recovery Mode.
17 replies

Nov 30, 2019 12:21 PM in response to woodmeister50

The command that woodmeister50 has provided you should result with something like:


/dev/disk0 (internal):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme 500 GB disk0

1: EFI EFI NNN.N MB disk0s1

2: Apple_APFS Container disk1 500 GB disk0s2


/dev/disk1 (synthesized):

#: TYPE NAME SIZE IDENTIFIER

0: APFS Container Scheme - Physical Store disk0s2 500 GB disk1

1: APFS Volume Macintosh HD NNN.N GB disk1s1

2: APFS Volume Preboot NNN.N MB disk1s2

3: APFS Volume Recovery NNN.N MB disk1s3

4: APFS Volume VM N.N GB disk1s4



Does it?

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Catalina killing my 500GB SD storage

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