How do I make 1 empty partition out of an external USB disk?
Solution 1:
This will erase all data that currently exists on the USB drive:
- Remove your USB drive.
- Open Disk Utility.
- In the menu bar, click [View] > [Show All Devices].
- Insert your USB drive. You should see the drive appear in the sidebar in Disk Utility as an item whose name is the manufacturer name and model name/number of the drive. Click this item to select it.
- Click [Erase] in the top bar.
- Enter a name of your choosing.
- For the format, choose "MS-DOS (FAT)".
- For the scheme, choose "GUID Partition Table". This is required since your drive exceeds 2TiB in size.
- Click [Security Options...], move the slider to "Fastest", then click "OK".
- Click [Erase].
macOS will enforce the creation of a 200MiB EFI System Partition on GPT-formatted drives. If you want to claim this space, you can either:
format the drive using another tool of another OS (e.g. Windows Disk Management, GParted for Linux); or
use the
gpt
command (or an equivalent likegdisk
) to manually create a single partition which spans the whole drive, which you will then need to format with a filesystem, e.g. create a FAT32 filesystem usingnewfs_msdos
. If you want to create an EXT filesystem, themkfs.ext?
commands (e.g.mkfs.ext4
) can be obtained via Homebrew by runningbrew install e2fsprogs
.