Shrink or enlarge existing partitions (including the Boot Camp partition) by optimizing available free space. Format Volumes:
Drag the left or right border of the partition to shrink it. A blue bar indicates the new size. Alternatively, type "300 GB" into the "New Size" field. You will see "Unallocated Space" (100GB) appear next to the partition. stellar partition manager for mac
A security feature that allows users to hide sensitive volumes from the desktop and Finder. How to Use Stellar Partition Manager (Legacy) Shrink or enlarge existing partitions (including the Boot
A third-party tool like Stellar would face an impossible triage. It could either operate strictly within the user data volume (where native tools already suffice) or attempt to modify system partitions (which would break Apple’s security model). There is no middle ground. Apple has deliberately removed the "power user" ability to arbitrarily shuffle system partitions, prioritizing security and stability over flexibility. A Stellar Partition Manager would constantly be fighting against the kernel, the bootloader, and the T2/M-series security chips. Alternatively, type "300 GB" into the "New Size" field
The third category is where Stellar could theoretically differentiate itself. But these are precisely the operations that modern Mac users should avoid. They lead to broken bootloaders, lost Recovery partitions, and a one-way ticket to macOS Recovery over the internet . In the Windows world, these risks are acceptable. In the Mac world, they are signs of a tool fighting against the machine’s nature.