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I follow the instructions in How can I edit "/System/Library/LaunchDaemons/com.apple.nfsd.plist" In Catalina? but failed in generate and tag new APFS System Snapshot.

/System/Library/Filesystem/apfs.fs/Contents/Resources/apfs_systemsnapshot
-s "SnapshotName" -v /Volumes/Macintosh\ HD

return with "fs_snapshot_create: Operation not permitted"

same instruction succeed with Intel Mac on macOS 11.4

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  • Welcome to Ask Different! As of macOS El Captain 10.11, no processes may change anything, not even Apple's own processes in /System /bin /sbin /usr /var. You have to switch off the system integrity protection beforehand, but unfortunately I can only advise against it.
    – BabyBoy
    Jun 5, 2021 at 13:42
  • The post you link to uses sudo, could this be the issue?
    – nohillside ♦
    Jun 5, 2021 at 14:54
  • @nohillside sudo is not required in recovery mode terminal apple.stackexchange.com/questions/406345/…
    – IwfWcf
    Jun 5, 2021 at 18:37
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    @lwfWcf But you didn't mention that you wanted to do it in recovery mode.
    – BabyBoy
    Jun 5, 2021 at 21:09
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    @DarwinOSX If you don't operate in recovery mode, after you reboot the file would be revert to snapshot version, so it would be no reason to operate in normal mode. About your deleted post, can you post to a place like a github gist and comment the link?
    – IwfWcf
    Jun 6, 2021 at 19:24

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