Hash mismatch detected on disk1s5- Just got this on my iMac today - FIX??

Hash mismatch detected on disk1s5. macOS should be reinstalled on this volume. Going to do this, but not hopeful any more


Going to clear it out the iMac 2020 and tried to turn it into a Monitor with Luna Astropad - Had three now and they are shaky machines.

iMac 27″, 13.4

Posted on Sep 4, 2023 7:31 AM

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Question marked as Top-ranking reply

Posted on Sep 5, 2023 7:23 AM

Hi Qbee1776,


Thanks for posting. Based on the screenshot, reinstalling would be your best step. If you're continuing to have issues after you complete that process, your best bet will be to contact Apple: Get Support


While it sounds like you're familiar with the process, these links cover backing up and reinstalling if you need guidance:


How to back up your Mac - Official Apple Support


How to reinstall macOS - Apple Support


Have a good one.

1 reply
Question marked as Top-ranking reply

Sep 5, 2023 7:23 AM in response to Qbee1776

Hi Qbee1776,


Thanks for posting. Based on the screenshot, reinstalling would be your best step. If you're continuing to have issues after you complete that process, your best bet will be to contact Apple: Get Support


While it sounds like you're familiar with the process, these links cover backing up and reinstalling if you need guidance:


How to back up your Mac - Official Apple Support


How to reinstall macOS - Apple Support


Have a good one.

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Hash mismatch detected on disk1s5- Just got this on my iMac today - FIX??

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