Cannot erase (format) my HD using Disk Utility

When I try to format my HD on iMac, the process freezes and don't erase it.

What should I do ?

Any help would be very welcome as I am stuck for hours now :-(

iMac 27″, macOS 10.13

Posted on Dec 2, 2022 9:17 AM

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1 reply

dialabrain

Level 10

134,033 points

Dec 2, 2022 9:40 AM in response to jehany

You have to be in Recovery Mode to format an internal disk. Press Command R as soon as you boot your Mac.

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Cannot erase (format) my HD using Disk Utility

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