Boot Camp Partition Size

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Level 1

8 points

Boot Camp Partition Size

I'm currently have about 167GB of available storage on my 256GB Macbook Pro, however the Boot Camp software is only allowing me to allocate a maximum of 97GB for the Windows software (153GB on MacOS) even though I have adequate available storage to create a larger partition size for the Windows software. It says I only have 10GB free on MacOS which is not true as I'm only using less than 90GB of storage on my MacOS currently.

Previously, I managed to allocate a larger partition size for Windows (about 120GB+) than the maximum size Boot Camp is allocating to me right now. I have to uninstall the Windows partition soon after as I need more storage on my MacOS at that time. Right now, I need more storage on my Windows so I would appreciate if someone could provide a solution to this issue. Thanks!

MacBook

Posted on Aug 30, 2019 12:17 AM

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Answer 1

Loner T

Level 9

59,471 points

Aug 30, 2019 6:37 AM in response to MarcusCheeKJ

Post the output of

diskutil apfs resizeContainer disk0s2 limits

Here is an example.

diskutil apfs resizeContainer disk0s2 limits

Resize limits for APFS Physical Store partition disk0s2:

  Current Physical Store partition size on map:   1.0 TB (1000240963584 Bytes)

  Minimum (constrained by file/snapshot usage):   562.0 GB (561969627136 Bytes)

  Recommended minimum (if used with macOS):       572.7 GB (572707045376 Bytes)

  Maximum (constrained by partition map space):   1.0 TB (1000240963584 Bytes)

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Answer 2

MarcusCheeKJ Author

Level 1

8 points

Aug 30, 2019 6:40 AM in response to Loner T

Resize limits for APFS Physical Store partition disk0s2:
  Current Physical Store partition size on map:   250.7 GB (250685575168 Bytes)
  Minimum (constrained by file/snapshot usage):   131.6 GB (131617259520 Bytes)
  Recommended minimum (if used with macOS):       142.4 GB (142354677760 Bytes)
  Maximum (constrained by partition map space):   250.7 GB (250685575168 Bytes)

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Answer 3

Loner T

Level 9

59,471 points

Aug 30, 2019 6:58 AM in response to MarcusCheeKJ

The BC Assistant calculations are correct.

macOS Recommended Mimimum = 142GB

OSXRESERVED = 10 GB (This is the internal partition for the Windows installer, which goes back to macOS, after Windows installation)

Windows Partition = 250 - (142+10) ~ 98 GB

The Storage tab in About This Mac is not an accurate picture of your partition map.

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Answer 4

Loner T

Level 9

59,471 points

Aug 30, 2019 7:10 AM in response to MarcusCheeKJ

Can you move macOS non-OS files to external storage to free up disk space?

Another option is to backup macOS, erase/install macOS without any applications/software, install Windows, and then restore your backup. This method may give a you a few more GB, but your restore may fail, if you shrink macOS too much.

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