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Partition schemes available in Disk Utility on Mac
When you erase and format a storage device in Disk Utility on Mac, youβre asked to choose a scheme to use. Disk Utility supports the following schemes:
GUID Partition Map: Choose this option for all Intel-based and Apple Silicon Mac computers. Some newer Microsoft Windowsβbased computers can also use this scheme.
Master Boot Record: Choose this option for compatibility with all Microsoft Windowsβbased computers.
Apple Partition Map: Choose this option for compatibility with old PowerPC-based Mac computers.