Erasing Macintosh HD taking a very long time

Hi, I have imac 27 2013 and I want to format my Macintosh Hd and install clean macos

1 - I start my mac with alt(option) key and select install drive with osx

2 - select disck utility to clean mac hd

3 - select macintosh hd and click erase

and then nothing happen....

This is details:

Preparing to erase APFS Volume content

Checking mount state

Erasing APFS Volume disk3s1 by deleting and re-adding

Deleting APFS Volume from its APFS Container

Unmounting disk3s1

Deleting volume

At that last step it seems to have just stopped... for 6 hours or may be more

Then I repeat process after restart and again no success

What I need to do to erase my Hd?

Thank you!

Posted on May 18, 2019 1:58 PM

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5 replies

rkaufmann87

Level 10

148,452 points

May 18, 2019 4:08 PM in response to maxmalax

Restart holding down Command + R that will get you into the Recovery Partition. Then open Disk Utility and erase the drive. Then you can exit Disk Utility and then select Install Mac OS.

babowa

Level 9

78,562 points

May 18, 2019 3:34 PM in response to maxmalax

Are you doing this using recovery? you cannot erase the drive you are booted into, so restart with command + r or command + option + r to boot into recovery and then use that Disk Utility to erase the drive and then reinstall the OS.

maxmalax Author

Level 1

4 points

May 18, 2019 8:51 PM in response to maxmalax

Thank you guys, in recovery mode its ok! Done!

babowa

Level 9

78,562 points

May 18, 2019 9:45 PM in response to maxmalax

Glad to hear it!

rkaufmann87

Level 10

148,452 points

May 18, 2019 10:25 PM in response to maxmalax

Your welcome.

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Erasing Macintosh HD taking a very long time