Quit the Disk Utility app if it was previously open. This should show a list of deleted snapshots. Removing snapshotsįirst, turn off Time Machine automatic backups.
#Macos bootcamp free
To be able to shrink the container, these snapshots need to be removed first in order to truly free up the space for shrinking. I believe this is because macOS is using the supposed “free” space on the disk to store local Time Machine snapshots, and thus the “free space” in the container is not actually free. This rather obtuse error actually means that the Time Machine snapshots on the primary macOS partition need to be deleted. In trying to add the partition, however, Disk Utility may report that “This container can’t be split, because the resulting containers would be too small.” In this case, the + (plus) or – (minus) buttons to add and remove partitions in Disk Utility will be grayed out. In Disk Utility, select the Apple SSD physical disk, and click the Partition button at the top of the tool bar to open the pie chart, and Click the + button to add a partition. Disk Utility in macOS can do this losslessly, by shrinking the primary APFS container. The first step is to add a new partition, right in front of the Window partition.
#Macos bootcamp mac
On a standard Boot Camp setup, there are three major partitions - the first is the APFS container containing all the Mac volumes, the second is the Windows NTFS partition, and the third is the Windows recovery partition.
Add a new partition (note: not a new APFS volume, but a new partition / APFS container) with a slightly larger size than the desired amount of space to be added to Boot Camp, via Disk Utility, which will losslessly shrink the AFPS macOS container to do so.
#Macos bootcamp full
Keep full backups via Winclone and Time Machine in case something goes wrong! General concept
Sorry, but again, this is what worked for me, and is no guarantee that it would work for anyone else. I am not responsible for any damage that may result if anyone follows my notes. Changing disk partitions across two operating systems always has the risk of seriously damaging partition maps and rendering data irretrievable. There is no guarantee this works for other models of MacBooks or OS versions. These are notes that I took to ensure that I can replicate the procedure next time.ĭISCLAIMER: this is what worked for me, on my EFI-based MacBook Pro. It is possible, and actually, quite straightforward to resize the Boot Camp partition on macOS 12.6, even with an encrypted AFPS system volume, with minimal third party tools. There is a lot of conflicting or outdated information about this procedure, including some which assert that it was impossible. In short, I needed to grant about 100 GB of extra space to my Bootcamp Windows partition from my Mac partition, without erasing and reinstalling Windows, on macOS 12.6 Monterey running on a 2019 Intel MacBook Pro.
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