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Question: problem erasing Apple HDD Internal Volume

MBP mid 2012 500GB HDD needed fresh OS install due to failed update 12.13.3
Tring it with bootable USB mounted High Sierra 10.13.3


Erasing possible with MS-DOS, but not with Mac OS Extended (Journaled) or APFS*


It has issues with mounting while erasing:User uploaded file

MacBook Pro (13-inch Mid 2012), macOS High Sierra (10.13.3)

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Mar 2, 2018 4:53 AM in response to vimalskatiyar In response to vimalskatiyar

If you're certain you booted into the flash drive I don't know why you are having a problem. Of course you could boot into internet recovery and try installing from there.

About macOS Recovery - Apple Support

Mar 2, 2018 4:53 AM

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Mar 2, 2018 6:02 AM in response to vimalskatiyar In response to vimalskatiyar

Internet Recovery keys are Command+Option+R. If you have installed macOS 10.12.4 or above this key combo will boot to the recovery Utilities Menu and let you install the OS that is currently supported and available for your Mac (e.g. 10.13.3).


Shift+Command+Option+R combo boots to Internet Recovery Utilities Menu so you can install the most current version of the OS that shipped with your Mac (e.g. 10.11.6).


As CountryGirl56 noted, you should be able to boot to something external (e.g. Internet Recovery) and select the Apple HDD HTS.... media (disk) not disk0s2. Run First Aid to see if there are any errors that need to be fixed. Then keep it selected and click Erase to create/format a single volume.

Mar 2, 2018 6:02 AM

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Mar 2, 2018 9:07 AM in response to vimalskatiyar In response to vimalskatiyar

I got the trick!

While erasing the disk, unplugging the bootable USB did the job

Though, I do not understand why...


Thanks @CountryGirl56 & @keg55 for addressing to my problem [was stuck up here from last 2 days!]Hopefully, I would now install fresh copy of High Sierra

Mar 2, 2018 9:07 AM

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Question: problem erasing Apple HDD Internal Volume