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macOS 10.15 Catalina: How to Mount Root Partition Read/Write for Post-Installation

Joined
Oct 18, 2010
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MSI Gaming M5 Z270
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i7 7700K
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In the final version of Catalina, attempting this results in the following:
Bash:
$ sudo mount -uw /
mount_apfs: volume could not be mounted: Operation not permitted
mount: / failed with 77
 
Joined
Feb 21, 2013
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Gigabyte GA-B85M-DS3
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Xeon E3 1241 V3
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So, what's the easy way to restore custom drive icons in Catalina? The upgrade preserved existing icons but when I reformatted my Catalina backup HDD to APFS I lost my custom image and the system won't let me copy and paste the image I previously used. Thanks in advance!

Tom
 

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Joined
Oct 11, 2016
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Also getting the same error like @Altimit and @xxl2damax on Catalina Final Release :

$ sudo mount -uw /
mount_apfs: volume could not be mounted: Operation not permitted
mount: / failed with 77


happen both in Terminal directly or via Hackintool.
 
Joined
Oct 2, 2019
Messages
51
Motherboard
GA Z370N WiFi
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8700K
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Vega 56
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MacBook Air, Mac mini
After upgrading to Catalina, my csrutil status shows:

System Integrity Protection status: unknown (Custom Configuration).
Configuration:
Apple Internal: disabled
Kext Signing: disabled
Filesystem Protections: disabled
Debugging Restrictions: enabled
DTrace Restrictions: enabled
NVRAM Protections: enabled
BaseSystem Verification: enabled
This is an unsupported configuration, likely to break in the future and leave your machine in an unknown state.


I tried to type csrutil enable at the Recovery OS terminal, but after restarting, the status is still the same, can someone teach me how to fix this? Thank you.


Solved: in case someone is as blur as me: in config.plist, under Rt Variables: CsrActiveConfig values:
1. Disable SIP: 0x67
2. Enable SIP: 0x00
mine for some reason was set to 0x03
 
Last edited:
Joined
Aug 24, 2018
Messages
19
Motherboard
Gigabyte Z370N WIFI
CPU
i5
Graphics
RX 570
Also getting the same error like @Altimit and @xxl2damax on Catalina Final Release :

$ sudo mount -uw /
mount_apfs: volume could not be mounted: Operation not permitted
mount: / failed with 77


happen both in Terminal directly or via Hackintool.
same here
 
Joined
Oct 2, 2019
Messages
51
Motherboard
GA Z370N WiFi
CPU
8700K
Graphics
Vega 56
Mac
MacBook Air, Mac mini
did not fix the problem.
also tried giving full disk access to terminal app
nada :(
I managed to reproduce the error, in short your System Integrity Protection (SIP) is enabled, so "sudo mount -uw /" won't work. You can check in Terminal by typing: csrutil status

The new process involves 2 steps:

1. What you need to do is to enable the SIP, if you open clover configurator, mount your EFI, open config.plist (is in /EFI/CLOVER/ ), then under Rt Variables: CsrActiveConfig, change it to 0x67 (this will disable SIP), and restart.
- Disable SIP: 0x67
- Enable SIP: 0x00
- mine was originally set to 0x03 (partial)

2. After restarting, go back to terminal, and type: sudo mount -uw /

3. you may want to re-enable SIP after the post-installation.

Hope it helps! :)
 
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