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Big Sur Mount system read/write

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Oct 15, 2013
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Motherboard
Gigabyte z790 Aero G
CPU
i9-13900K
Graphics
RX 6900 XT
Mac
  1. Mac Pro
Mobile Phone
  1. iOS
Mount -uw /Volumes/ no longer works in Big Sur, it was still possible in beta versions, but not in the final version, does anyone have any method?
 
Mount -uw /Volumes/ no longer works in Big Sur, it was still possible in beta versions, but not in the final version, does anyone have any method?
Hi, I have a Big Sur release.
I put the iasl in /usr/local/bin
perfectly disassembles and works perfectly no problems detected
 
Hi, I have a Big Sur release.
I put the iasl in /usr/local/bin
perfectly disassembles and works perfectly no problems detected
can you explain how you do that?
 
can you explain how you do that?
Since the days of Mojave, Apple has tried to protect /usr/bin from user interference.
Now the /usr/bin path exists only for system files and installing custom files there can kill the system, but, user executable files always had the path /usr/local/bin.
To install iasl on the path /usr/local/bin in the terminal, go to the folder where iasl is located (in my case, the iasl folder is on the desktop)

~ % cd /Users/User/Destop/iasl
Next command:
~ % sudo cp iasl /usr/local/bin

And next:
~ % iasl -v

After entering the iasl -v command, we get a system warning that iasl does not have permission to run.

Go to:
System settings > Security
There just iasl will require confirmation to start. We allow it to run
In the terminal repeat:
~ % iasl -v
and we see:

Last login: Sun Nov 22 13:58:33 on ttys000
User@iMac-User ~ % iasl -v

Intel ACPI Component Architecture
ASL+ Optimizing Compiler/Disassembler version 20180427(RM)
Copyright (c) 2000 - 2018 Intel Corporation

User@iMac-User ~ %


PS. Sorry for my english.
 
Thanks for the support, but what is "iasl" and how to get it, is it a file?
 
Since the days of Mojave, Apple has tried to protect /usr/bin from user interference.
Now the /usr/bin path exists only for system files and installing custom files there can kill the system, but, user executable files always had the path /usr/local/bin.
To install iasl on the path /usr/local/bin in the terminal, go to the folder where iasl is located (in my case, the iasl folder is on the desktop)

~ % cd /Users/User/Destop/iasl
Next command:
~ % sudo cp iasl /usr/local/bin

And next:
~ % iasl -v

After entering the iasl -v command, we get a system warning that iasl does not have permission to run.
Go to:
System settings > Security
There just iasl will require confirmation to start. We allow it to run
In the terminal repeat:
~ % iasl -v
and we see:

Last login: Sun Nov 22 13:58:33 on ttys000
User@iMac-User ~ % iasl -v

Intel ACPI Component Architecture
ASL+ Optimizing Compiler/Disassembler version 20180427(RM)
Copyright (c) 2000 - 2018 Intel Corporation

User@iMac-User ~ %


PS. Sorry for my english.

Thank you, but it does not work in Big Sur, i have followed all the steps and successfully installed the iasl in /usr/local/bin but the mount still fails.

mount -uw /
mount_apfs: volume could not be mounted: Permission denied
mount: / failed with 66

Screen Shot 2020-11-22 at 21.09.08.png

Screen Shot 2020-11-22 at 21.18.05.png
 
Last edited:

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I've tried several solutions, they all end up in " permission denied"
 
I've tried several solutions, they all end up in " permission denied"
Why do you need to write to the macOS system volume ?
 
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