Or if you prefer, with the drive already mounted you can run a terminal command to have the information of all your drives listed, like so: diskutil apfs list. When I type in 'diskutil eraseDisk free EMPTY /dev/disk2' into terminal my usb is unmounted just like before and I get this message: Any ideas on what I can do to erase and reformat my USB drive?

Search for the volume name they want to recover and note the volume identification, for example, Volume disk1s1. Published December 6, 2019 I decide to upgrade the performance of my sister’s Late 2011 Macbook Pro by repurposing a 240GB SSD (Solid State Drive). It's a whole mode for diskutil to operate in. I wanted to do a clean install of Mac OS X 10.8 Mountain Lion but after trying to delete the existing partition scheme, I was left with no partitions and a Disk Utility that didn't want to create some. $ diskutil eraseDisk JHFS+ NewDiskName disk4 The eraseDisk verb handles reformatting disks, which erases all data and volumes on a single disk. Below that should be a virtual (synthesized) disk with the APFS Container Scheme. You can see disk2s2 in the screenshot below, the partition on my external hard drive hosting the APFS Container.

Any help is much appreciated. I listed my drives: diskutil APFS list; erased the Volume with the -69808 error, mine was VM volume: diskutil eraseDisk APFS VM /dev/[your_volume] from Disk Utility. Enter: diskutil list . System rsync is rather outdated (its last update was in 2006) and it doesn’t support some parameters necessary for creating a full clone. It is a safer alternative and won’t produce any unexpected results.
The verb takes as inputs the format, new disk name and disk identifier, in that order.

For example, repartitioning an existing disk with Using the Terminal, running gpt destroy disk0 where disk0.

You can format APFS drive in macOS Sierra by following these steps: Check the number of disk and partition.

Then type: diskutil eraseDISK apfs YOURDRIVENAME disk0 (or whichever disk is the Kingston SSD) Warning – This step (eraseDISK command) will … Using the Terminal, unmounting the disk diskutil unmountDisk disk0, where disk0 is the internal NVME drive. System rsync is rather outdated (its last update was in 2006) and it doesn’t support some parameters necessary for creating a full clone. Here’s how to downgrade from APFS back to HFS+ / Mac OS Extended file system on your Mac such as a MacBook or an iMac.

Call the administrator and ask for the recovery key using the volume identification as recovery key ID.

It should show "mounted successfully". Called Apple and THEY couldn’t help either (after asking me if i tried everything -which I had) So I bit the bullet and bought DiskWarrior for $128 and crossed my fingers.

diskutil apfs and using man diskutil is more like opening a disjoint library. This runs fsck with the -f flag which forces it to check journaled file systems like HFS+, as well as the -y flag, which automatically says “yes” to any prompts that fsck might encounter. Terminal to the rescue.

Step 2: Type diskutil list and find the identifier of the APFS container. For that using the terminal application again, enter the following command: sudo diskutil unmount force /dev/(enter here disk identifier name) Then press return and enter the admin password if prompted. Enter: diskutil list . The final commands should be modified appropriate to your disk and partition.

This runs fsck with the -f flag which forces it to check journaled file systems like HFS+, as well as the -y flag, which automatically says “yes” to any prompts that fsck might encounter.

Open Terminal, which is located in the Utilities folder inside the Applications folder. $ diskutil eraseDisk JHFS+ Name /dev/disk0 If unable to unmount drive on Mac.