How to Fix the ‘Couldn’t Modify Partition Map’ error on MacOS?

Altair Forum User

Several users are complaining that they keep ending up getting the 'Couldn't modify partition map' error on their system while triggering a re-format over partition by corruption. To repair this annoying issue, here are some potential fixes mentioned below.
Source :- https://sofiejohn.blogspot.com/2021/09/how-to-fix-couldnt-modify-partition-map.html

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Altair Forum User

As it turns out, a lot of affected users that were also dealing with this issue on macOS have managed to fix the issue by using Disk Utility to create a new partition map by forcing the utility to show all devices and erasing the problematic partition.

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