Big Sur admin password issue #191

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opened 2025-12-29 00:19:58 +01:00 by adam · 3 comments
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Originally created by @josecelano on GitHub (May 14, 2021).

Hi. I could install and run Big Sur easily following the instructions on the README but It seems I have a common problem with Big Sur. I can log in with the admin password I set during installation but I cannot use that password when the system asks for the admin password.

I followed the steps in this video:

https://www.youtube.com/watch?v=QojNS2Rh3W4

but I'm getting the same error even if apparently I could change the password without any problem.

I guess the problem does not have anything to do with this repo but if it's a common and deterministic problem we can add the fix to the readme if someone knows how to fix it.

Originally created by @josecelano on GitHub (May 14, 2021). Hi. I could install and run Big Sur easily following the instructions on the README but It seems I have a common problem with Big Sur. I can log in with the admin password I set during installation but I cannot use that password when the system asks for the admin password. I followed the steps in this video: https://www.youtube.com/watch?v=QojNS2Rh3W4 but I'm getting the same error even if apparently I could change the password without any problem. I guess the problem does not have anything to do with this repo but if it's a common and deterministic problem we can add the fix to the readme if someone knows how to fix it.
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@sickcodes commented on GitHub (May 16, 2021):

sudo su

passwd

@sickcodes commented on GitHub (May 16, 2021): `sudo su` `passwd`
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@josecelano commented on GitHub (May 16, 2021):

Hi @sickcodes that does not work. It seems it's a Big Sur bug:

https://www.reddit.com/r/macsysadmin/comments/kv7t83/administrator_password_not_working_on_big_sur/
https://appletoolbox.com/cant-enter-your-password-in-macos-big-sur-heres-how-to-fix-it/

I installed Catalina and then upgraded to Big Sur.

It seems it only happens on T2 chip macs. I have a Lenovo ThinkPad with Ubuntu 18.

I haven't tried option 2 and 3 on this article yet:
https://appletoolbox.com/cant-enter-your-password-in-macos-big-sur-heres-how-to-fix-it/
I've only tried the option on the youtube video I wrote below.

@josecelano commented on GitHub (May 16, 2021): Hi @sickcodes that does not work. It seems it's a Big Sur bug: https://www.reddit.com/r/macsysadmin/comments/kv7t83/administrator_password_not_working_on_big_sur/ https://appletoolbox.com/cant-enter-your-password-in-macos-big-sur-heres-how-to-fix-it/ I installed Catalina and then upgraded to Big Sur. It seems it only happens on T2 chip macs. I have a Lenovo ThinkPad with Ubuntu 18. I haven't tried option 2 and 3 on this article yet: https://appletoolbox.com/cant-enter-your-password-in-macos-big-sur-heres-how-to-fix-it/ I've only tried the option on the youtube video I wrote below.
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@sickcodes commented on GitHub (May 16, 2021):

Hmmm weird bug, I will see if this affects us and why. If it does, I'll make the change

@sickcodes commented on GitHub (May 16, 2021): Hmmm weird bug, I will see if this affects us and why. If it does, I'll make the change
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Reference: starred/Docker-OSX#191