Saturday, August 9, 2025

hard drive – Unable to reduce MacOS partition below 50GB

I have a Mac that I want to install windows on using Bootcamp partition. It is a MacBook Pro 13-inch 2017 running Monterey 12.7.4. When using Bootcamp partition, it won’t let me reduce the MacOS partition size below 50GB, forcing me to keep “10GB free”. I just did a format and clean install of the OS, so I have no files, downloads, apps, etc whatsoever beyond the Windows .iso file. The disk should be 121GB total. How do I remove everything possible from MacOS in order to increase the size of my Windows partition? To be clear, I don’t care about MacOS and don’t intend to use it — I would reduce the MacOS partition to 0 if I could.

In case it’s useful, here is the output of diskutil list

    /dev/disk0 (internal, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *121.3 GB   disk0
   1:                        EFI ⁨EFI⁩                     314.6 MB   disk0s1
   2:                 Apple_APFS ⁨Container disk1⁩         121.0 GB   disk0s2

/dev/disk1 (synthesized):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      APFS Container Scheme -                      +121.0 GB   disk1
                                 Physical Store disk0s2
   1:                APFS Volume ⁨Mac HD - Data⁩           9.6 GB     disk1s1
   2:                APFS Volume ⁨Preboot⁩                 270.4 MB   disk1s2
   3:                APFS Volume ⁨Recovery⁩                1.1 GB     disk1s3
   4:                APFS Volume ⁨VM⁩                      1.1 MB     disk1s4
   5:                APFS Volume ⁨Mac HD⁩                  15.4 GB    disk1s5
   6:              APFS Snapshot ⁨com.apple.os.update-...⁩ 15.4 GB    disk1s5s1 ```

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