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I feel like this is a known problem on High Sierra, but I can't delete my BOOTCAMP partition to gain "Free Space" and I also can't expand my APFS container that contains my MACINTOSH HD. It's like they've turned into seperate hard disks, and I can't move over the space from the old file system to the new one. This is what I find when I type diskutil list into terminal:

diskutil

I tried manually deleting the BOOTCAMP partition using terminal, and then expanding the container: I tried using the diskutil apfs resizeContainer. But I got an error saying that the target disk has no space (i.e. it doesn't detect the free space). Any solutions?

  • What did you do to make your BootCamp partition Apple_HFS style (it should be Microsoft Basic Data)? – klanomath Aug 21 '17 at 18:21
  • I pressed erase in disk utility and made it into Apple_HFS style. – semmo Aug 21 '17 at 22:29
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First convert the former Boot Camp partition to free space:

sudo diskutil eraseVolume "Free Space" %noformat% /dev/disk0s3

Then expand your APFS container to the max (0 is a magic size here):

diskutil apfs resizeContainer disk0s2 0
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  • I actually tried this method, but before Dev Beta 7, the APFS container couldn't detect the empty space. In Beta 7 you can just use disk utility to fill the empty space. Not sure if above method will work. – semmo Aug 23 '17 at 16:10

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