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User profile for user: Growbeebee
Growbeebee Author
User level: Level 1
4 points

unable to use any boot commands (boot options, diagnostic, recovery) after Big Sur upgrade

I recently upgrade to Big Sur. Since then, my Mac OS's Windowserver keeps crashing when using parallels desktop's running quickbook. I tried running apple diagnostic by booting up my mac and hold down D (with or without option key).. the system would just boot normally to my login prompt and started mac normally. I tried to do the same with holding down options key (to select boot), or trying command R for "recovery" and command S for single user mode.. none of those works for me (system just keep rebooting it normally.. and yes, I tried both shutdown, reboot, hard reset.. and nothing works). I also try using an apple usb keyboard (and a dell keyboard) instead of my bluetooth wireless keyboard.. nothing seems to work. I have a 27" Imac Mid 2015 built. Anyone have the similar issue? Thanks in advance.

iMac 27″, macOS 10.13

Posted on Jan 18, 2021 12:34 PM

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User profile for user: Growbeebee
Growbeebee Author
User level: Level 1
4 points

Posted on Jan 20, 2021 9:36 AM

Talked to Apple support via phone and tho they were nice and professional, they were not able to fix/address this issue. I can't even reset the eeprom using the cmd+option+P+R.. basically, no keystroke works at boot time. This morning, I figure out a FIX.. looks like my time machine (USB drive) may be the culprit.. after unplugging it (only USB device).. I am now able to boot to diagnostic/recovery.. etc.. !! Want to post this solution in case if anyone else is struggling.

I do have a different issue still.. after upgrading to Big Sur, when using Quickbook within my parallel desktop.. WindowsServer (mac) keeps crashing and creates a panic that either halts my system or causes it to reboot... This was the original problem that I was trying to run diagnostic and disk scan (all were clean).

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User profile for user: Growbeebee
Growbeebee Author
User level: Level 1
4 points

Jan 20, 2021 9:36 AM in response to Growbeebee

Talked to Apple support via phone and tho they were nice and professional, they were not able to fix/address this issue. I can't even reset the eeprom using the cmd+option+P+R.. basically, no keystroke works at boot time. This morning, I figure out a FIX.. looks like my time machine (USB drive) may be the culprit.. after unplugging it (only USB device).. I am now able to boot to diagnostic/recovery.. etc.. !! Want to post this solution in case if anyone else is struggling.

I do have a different issue still.. after upgrading to Big Sur, when using Quickbook within my parallel desktop.. WindowsServer (mac) keeps crashing and creates a panic that either halts my system or causes it to reboot... This was the original problem that I was trying to run diagnostic and disk scan (all were clean).

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unable to use any boot commands (boot options, diagnostic, recovery) after Big Sur upgrade

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