How to disable SIP when Big Sur is installed in a VMware Fusion Player virtual machine
Follow the steps below to disable System Integrity Protection (SIP).

Start by booting to macOS Big Sur and opening a Terminal application window. Next, enter the command given below. This will create a NVRAM variable with the desired value, but misspelled variable name. This misspelling will be corrected in a later step.
sudo nvram Asr-active-config=%7f%00%00%00


Shutdown macOS. In the Setting window for the virtual machine, select
Startup Disk. Hold down the option key and select the Restart to Firmware… button, as shown below.

Select the EFI Internal Shell, as shown below.

If desired, enter the command below to get full use of the window.
mode 128 40


Set the current filesystem to the EFI volume. This should be the mapped fs0 filesystem, so you would enter the following
fs0:

Next, verify the label is EFI by entering the command below.
vol

If wrong, then try fs1:, fs2:, fs3:, ....

Enter the command below to save the Asr-active-config variable to the file csr.bin.
dmpstore Asr-active-config -s csr.bin


Note: For more information on this command enter help -b dmpstore.

Next, enter the command below to edit the csr.bin file. You will need to correct the spelling by replacing the letter A with the letter c. The can be done by typing a 63 over the 41 on the first line.
hexedit csr.bin

The corrected file will appear as shown below. When finished save the changes and exit.

Note: The value of the variable is stored in the last 4 bytes of this file.


Enter the command below to create the csr-active-config variable in NVRAM.
dmpstore -l csr.bin

SIP will now be disabled on the next boot of Big Sur. If desired, enter the command below to remove the Asr-active-config variable from NVRAM.
dmpstore -d Asr-active-config


Enter the command below to leave the command shell.
exit

From the Boot Manager, select Mac OS X to boot Big Sur.


Format of the csv.bin File




Offset in Hex
Size in Decimal
Description




00-03
4
Length of variable name


04-27
36
Variable name stored as null terminated UTF-16LE string


28-37
16
GUID of the variable


38-3B
4
Attributes stored as 4 byte integer (See below)


3C-3F
4
Length of the data


40-43
4
The 4 byte integer that comprises the data







Attribute
Value
Description




NV
1
Non-volatile


BS
2
Boot service Access


RT
4
Runtime Access


HR
8
Hardware Error Record