1

I've installed Big Sur beta 2 and tried to use Boot Camp Assistant but I got the error "disk could not be partitioned". Also tried to partition manually but "a problem occurred while resizing APFS container structures". I don't use Time Machine but there were 3 snapshots starting with com.apple.os.update- that can't be deleted. I ran First Aid and fsck_apfs and no problem was found. Any other thing to try? Thanks!

Improve this question
1
  • 1
    Note that since Big Sur is a developer only beta you WILL have problems with it that you are expected to not share with the world at large (read the NDA you signed to be able to download Apple beta software). the best way to handle these is to file an official bug report.
    – Steve Chambers
    Jul 8, 2020 at 20:47

2 Answers 2

Reset to default
2

Finally found a fix! Deleting snapshots using tmutil didn't work but I deleted them with diskutil from Recovery: diskutil apfs listSnapshots <Macintosh HD's disk id> and then diskutil apfs deleteSnapshot <disk id> -uuid <snapshot uuid from the previous command> for every snapshot. I had 3, two of them were deleted and one returned "insufficient privileges" but it doesn't matter, now everything works. Do it at your own risk, I don't know whether it will work on your Mac.

Improve this answer
2
  • 1
    This worked for me as well.
    – Dave
    Jul 14, 2020 at 2:09
  • 1
    Glad it helped :)
    – Toma
    Jul 14, 2020 at 8:58
1 
sudo diskutil apfs resizeContainer disk0 0

You could vary the statement if you have a specific size in mind but you also just set it to 0 and it will grow to maximum physical disk size.

You can do this after copying the Time Machine image to a new disk for example.

Improve this answer
1
  • You save my day!! This worked to resize a 500gb disk cloned with dd from a 128 SSD. Running sudo diskutil apfs resizeContainer disk0 0grew my disk to 500GB !! Thanks @markdiener10
    – spacebiker
    Aug 14, 2021 at 14:52

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .