Reblogged from StackExchange, original author is pmdj.If you’ve installed Windows via Boot Camp, and now want to delete it and restore the space to your main Mac hard drive, this brief tutorial will guide you through the steps to do just that. Unplug and re-plug your disk, Disk Util should complain about initialization – go ahead and format your disk, we’re done! Time to write the changes to the disk: fdisk: 1> wĪs a final step, we have to quit: fdisk: 1> q You should see one entry that is of type EE and all other entries are blank. fdisk: 1> erase fdisk:*1> edit 1 Partition id ('0' to disable) : (? for help) EE Do you wish to edit in CHS mode? n Partition offset : 1 Partition size : The idea is to replace everything with one whole partition of type EE that covers the whole disk. First, we check out the partition table: fdisk: 1> p The commands in bold are the ones you need to type. You will be on the command line of fdisk. Next up, we will remove the MBR (Master Boot Record) from the drive, essentially destroying the BootCamp boot capability. Unmount your partitions: diskutil unmount "/Volumes/BOOTCAMP"ĭiskutil unmount "/Volumes/External Drive"ĭelete the partition with gpt: gpt remove -i 1 disk3 Let’s check the MBR side of things – also remember to take note of the index number here as well: fdisk /dev/disk3 If you only have one partition then it will most likely be “1”. You should take note of the index number next to the partition. Let’s take a look at the raw partition table: gpt -r show disk3 Note the name of the partition and the volume. I’ll be using disk3 as an example.įind out which disk we need to do surgery on: diskutil list If at any point you get permission errors, preface the commands with sudo (eg.: sudo fdisk /dev/disk3). Open up Terminal and let’s get destructive!ĭisclaimer: you are exclusively responsible for taking these steps by following along. We are going to destroy the complete partition map so that the drive can be reformatted into one whole partition using Disk Utility – essentially, a clean slate. Multiple partition external drive partitioning requires some extra steps to be done. The built-in Disk Utility app is suprisingly negligent with external drives that have at least one non-HFS+/APFS partitions on it.
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