Not like, Apple -> Shutdown I mean mash that power button down till you hear the fans die. Login to your new macOS install, take a breath of that fresh macOS install synthesized air, and then shutdown the computer. Follow the instructions, and grab that backup you made before you started all this for when it asks if you wanna import your data. Select the APFS volume, and choose the path of lease resistance that ends with installing macOS onto it (probably installing over the network). Go back to the main Disk Utility page, and you should see your two new drives. Partition 1 will be formatted with an Apple APFS partition, and partition 2 will use ExFAT. Tell Disk Utility to go eat bricks and parition that drive right down the middle Old Testament style. Disk Utility is going to try and persuade you to use Volumes instead. Find the partitioning tool in Disk Utility. Ok now you’re going to partition that newly erased SSD.

Plus re-installing two operating systems will probably re-write enough of the previously used bits to consider it fine.Ĭongratulations!. Anything higher will just take forever and perform I/O operations on every bit which wears down NVMe drives. Since you’re not losing possession of the device you probably can select the lowest level, 0, of security when running the erase. Find the highest level drive (make sure to select ‘All Devices’ from the little drop down menu up in the top-left hand corner) that Disk Utility will allow you to Erase (there should be a button front and center in the UI labeled “Erase”).Įrase your hard drive, and select a GUID partition table as the Formatting Option, and let it do its thing. Next you are going to boot your mac into recovery mode and launch the Disk Utility App.

Partition mac drive for dual boot