Some macOS Monterey users are encountering a peculiar “Volume Hash Mismatch” error message, informing them that a hash mismatch was detected and to reinstall macOS on the volume. The full error message reads:
“Volume Hash Mismatch – Hash mismatch detected on volume disk1s5. macOS should be reinstalled on this volume.”
Some users experience this error after a major system crash or kernel panic, after which the error constantly reappears.
For some users, the “Volume Hash Mismatch” error is accompanied by a significant increase in instability on the Mac running macOS Monterey, with apps crashing frequently afterwards. Other users have the error message showing up constantly, but without any apparent impact to the stability of the Mac.