I would like to be able back up my macbook on a weekly basis doing the following:

  • boot into recovery mode
  • mount a windows SMB network share
  • use disk utility to save a disk image to the network share
  • possibly automate this process

This seems like it should be possible however when I try and mount the SMB share I get this error message:

-bash-3.2# mount_smbfs
dyld: Library not loaded: /System/Library/PrivateFrameworks/SMBClient.framework/Versions/A/SMBClient
   Referenced from: /sbin/mount_smbfs
   Reason: image not found
Trace/BPT trap: 5

I have also attempted to copy the framework folder from the main system volume. However the recovery partition is read-only.

Am I incorrectly trying to mount the SMB share or do I have to make a custom recovery image thats supports SMB?

1 Answer 1


This is, because the binary for the framework that’s required is not part of the Recovery System.

I have been trying various things for over an hour now and the only thing that works appears to be AFP:

mkdir /Volumes/VOLUMENAME
mount_afp afp://USERNAME:[email protected]/VOLUMENAME /Volumes/VOLUMENAME 

One important thing that kept this from working for me was that I had used /Volumes/VOLUMENAME instead of the correct /VOLUMENAME in the afp URL.

  • still true for Big Sur
    – cirko
    Commented Oct 21, 2021 at 15:37

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