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I have a SSD drive that was removed from a MacAir and placed into an eclosure. I must have screwed up the directory by deleting files from the drive and not dismounting it because the drive is invisible in DiskUtil. I can see it in Terminal but when I try to erase the drive using diskutil, it starts and gets to 30% then stops with the error message below. The drive has been backed up so I really just want to start all over. The drive was JHFS+ format. HERE IS WHAT I'VE TRIED diskutil cs delete LVG(ID from cs list)Started CoreStorage operation Unmounting Logical Volumes Ejecting Logical Volumes Destroying Logical Volume Group Error: -69783: Unable to delete the CoreStorage Logical Volume Group THE CORESTORAGE LIST IS:

CoreStorage logical volume groups (1 found) I +-- Logical Volume Group 82251C74-8AB8-4D15-8B47-F4C0B92577A4 ------------------------------------------------------------------------------------·-

Name: Status: Size: Free Space: I

MASMac HD Online 120473067520 8 (120.5 G8) 18948096 8 (18.9 M8)

+-< I

Physical Volume 011056FE-9076-4299-8245-D661C4A2CA2C -----------------· -----------------------------------

I Index: I Disk: I Status: I Size: I

0 diskls2 Online 120473067520 8 (120.5 G8)

+->

Logical Volume Family 7DBD9F78-448E-430F-82F0-CD0738D38AC1

Encryption Type: I

None

+-> Logical Volume 5313F6EA-59A9-4331-BC04-2C385422C682

Disk: disk2 Status: Online Size (Total): 120101797888 B (120.1 GB) Revertible: Yes (no decryption required) LV Name: MASMac HD Volume Name: MASMac HD Content Hint: Apple_HFS

  • Can you post the output of diskutil list and also post the command you used to attempt the erase. – Allan Dec 23 '18 at 23:43
  • Started CoreStorage operation Unmounting Logical Volumes Ejecting Logical Volumes Destroying Logical Volume Group Error: -69783: Unable to delete the CoreStorage Logical Volume Group – gbs Dec 24 '18 at 20:16

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