Internal HDD listed as -193 mb capacity

When trying to format the internal disk to run macOS, the disk is named disk3s2 and capacity is -193 MB with Zero KB available. When trying to format the disk, it says “The chosen size is not valid for the chosen file system.”

no, the harddrive isn’t dead as it is read by my pc correctly.

Earlier Mac models

Posted on Jul 27, 2024 8:56 AM

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2 replies

Allan Jones

Level 10

80,024 points

Jul 27, 2024 10:45 AM in response to Octo142

What Macbook Pro sub-model? From a hardware standpoint that may be useful for us to know.

When trying to format the internal disk to run macOS,....

Was the disk previously running an OS other than macOS?

Octo142 Author

Level 1

4 points

Jul 27, 2024 11:19 AM in response to Allan Jones

Figured it out, thanks

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Internal HDD listed as -193 mb capacity