Why can't I delete this partition? What I tried to do was create an empty partition from the Windows partition for the Macintosh partition to increase it's storage by merging with the empty one. I'm not exactly sure how I messed up, but please help me.
MacBook Air 13″, macOS 12.1
You can only merge two partitions that are adjacent, with the free space coming after the partition in a clockwise direction.
In your screen shot, Macintosh HD and Untitled are not adjacent. Macintosh HD is the first partition and Untitled is the last partition with BOOTCAMP in-between. When Apple went to the Pie display, it confused the issue because it looks like first and last partitions are somehow adjacent. They are not.
You cannot do what you want without removing the BOOTCAMP partition with BOOTCAMP Assistant.
If you created that free space from Windows and not BOOTCAMP assistant, you are lucky you Mac partition is still intact.
You can only merge two partitions that are adjacent, with the free space coming after the partition in a clockwise direction.
In your screen shot, Macintosh HD and Untitled are not adjacent. Macintosh HD is the first partition and Untitled is the last partition with BOOTCAMP in-between. When Apple went to the Pie display, it confused the issue because it looks like first and last partitions are somehow adjacent. They are not.
You cannot do what you want without removing the BOOTCAMP partition with BOOTCAMP Assistant.
If you created that free space from Windows and not BOOTCAMP assistant, you are lucky you Mac partition is still intact.
You let Bootcamp perform this action
Suggest reading all the information is above suppled link
Does this from Disk Utilities is not the way to go and may in fact make thing worse.
The only way that you can successfully modify a Boot Camp partition is to use the Boot Camp Assistant.
Disk Utility and Partitioning
