Cannot Partition Usb Drive Mac
In previous versions of MacOS, I recall that Disk Utility provided an option to select the partition scheme (GUID, MBR, or Apple).
Trying to partition my usb on my Mac. Tried the Mac OS Extended (Journaled) and GUID Partition map for my 32 GB thumb drive. The terminal says 'You cannot manually partition an existing APFS Container disk' The Disk. If your computer warns you that the Windows was unable to complete the format of USB drive, don’t worry. If you can’t format USB, SD, external hard drive or hard drive partition, relax! This article will provide effective methods to get all these problems fixed and just follow to find the solutions here now.
If I formatted the USB key without changing the scheme to MBR, I could not read it on a Windows machine.
But now there is no option in High Sierra.
How do I format the USB key with FAT and MBR?
1 Answer
I thought I had the same issue but it's probably because in the view options at the top left corner of the Disk Utility window, 'Show Only Volumes' is selected. In order to change the partition map, it seems you have to select the actual disk. So simply select view - show all devices, then select the actual drive you're trying to reformat, then when trying to erase, you should have the option to choose a partition scheme. Hope this helps!
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protected by Community♦Jan 9 '18 at 15:54
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