Hi, I have a bootable external disk and the system volume is read-only.
I’m using macOS Monterey 12.6.1. And both macOS Big Sur and Ventura have the same read-only system volume.
I know how to modify the read-only system volume in the internal disk.
- Boot into recovery mode to disable System Integrity Protection and Signed system volume.
- Reboot back into macOS. And create a new folder and mount the system volume there.
- Modify the files.
- Create a new snapshot.
Here are several links taking about this.
It seems that I can boot from the external drive and do the same thing to modify the system volume there.
But can I modify this read-only system volume of the external drive when I’m using macOS from the internal disk?
I tried the mount command above but it doesn’t work.
~ sudo mount -o nobrowse -t apfs /dev/disk2s2 ~/livemount mount: ~/livemount failed with 75