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Unable to delete partitions on mac using diskUtility

Unable to delete/erase partitions on mac using disk utility.

Basically, I want to clean anything this is on MAC and want to reinstall the new MAC OS on My Macbook pro-2017.


I tried to install the new MAC OS but it give me an error too. Tried too many time.


I am very worried about the Mac. Please help!.

MacBook Pro 13″, macOS 11.5

Posted on Sep 11, 2021 12:00 PM

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Question marked as Best reply

Posted on Sep 11, 2021 3:23 PM

alikhan323 wrote:

Unable to delete/erase partitions on mac using disk utility.
Basically, I want to clean anything this is on MAC and want to reinstall the new MAC OS on My Macbook pro-2017.

I tried to install the new MAC OS but it give me an error too. Tried too many time.



You need to erase/reformat/initialize the "parent" Drive...




How to erase your Intel-based Mac - https://support.apple.com/en-us/HT208496


How to reinstall macOS from macOS Recovery - https://support.apple.com/en-us/HT204904


4 replies
Question marked as Best reply

Sep 11, 2021 3:23 PM in response to alikhan323

alikhan323 wrote:

Unable to delete/erase partitions on mac using disk utility.
Basically, I want to clean anything this is on MAC and want to reinstall the new MAC OS on My Macbook pro-2017.

I tried to install the new MAC OS but it give me an error too. Tried too many time.



You need to erase/reformat/initialize the "parent" Drive...




How to erase your Intel-based Mac - https://support.apple.com/en-us/HT208496


How to reinstall macOS from macOS Recovery - https://support.apple.com/en-us/HT204904


Sep 11, 2021 4:37 PM in response to alikhan323

If @leroydouglas' instructions do not work, then you may need to select the "MacBook" volume and click the "-" which will then prompt you to delete the "Volume Group". Delete the "Volume Group". Afterwards you should be able to erase the physical SSD as described by @leroydouglas. For some reason Apple keeps making this more and more difficult without providing proper details & instructions with their official documentation.

Unable to delete partitions on mac using diskUtility

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