~ ❯ sudo chflags schg /etc/auto_master ✘ INT at 21:01:04 We'll try to set the auto_master file to read-only, in hope it won't be overwritten again.

Please add the entry for your autofs file again to the auto_master file and save the file. You can try to set the file to read-only using the extended attributes of macOS. The recent macOS updates seem to overwrite the /etc/auto_master file. This is the version of /etc/auto_smb in Catalina: /System/Volumes/Data/mount/music -fstype=smbfs,soft,noowners,nosuid,rw autofs after macOS updates This is because macOS creates a second APFS volume for your user data, whereby the existing system installation is moved to a read-only APFS volume. You’ll just have to prepend your existing automount paths with /System/Volumes/Data. If you're using macOS Catalina 10.15 and macOS Big Sur 11 If you want to configure SMB, do it like this:Īdd this line to /etc/auto_smb: /mount/music -fstype=smbfs,soft,noowners,nosuid,rw you will need to add the user and password to the resource :( You can try to lock it down further using the Mac OS permissions but that won't help when the attackers user got admin rights as well.

Mac OS X is clever enough to lookup the username and password from the Mac keychain so there's no need to add the username and password in clear text to the configuration file. So add this line to /etc/auto_afp: /./Volumes/music -fstype=afp,rw afp://ip-address:/music If you want to configure AFP, do it like this: However, some Mac OS Version doesn't like this so I switched over to use my own folder named '/mount'. You just add a '/./' in front of your desired mount path and Mac OS X will even accept the Volumes folder. However, if you try to directly mount into this folder, autofs will fail. This is the default folder for all mounted shares on a mac. Normally Mac OS X tries to mount network shares into the '/Volumes' folder. I've encountered this behaviour with the latest macOS Catalina 10.15.7 supplemental update. You are free to choose a different name and can also use afp/cifs/nfs etc.īe aware that macOS updates can overwrite this file! Make sure you'll check the content of this file after you've updated. In this case I want to create a configuration for automatically mount SMB volumes. This will tell autofs to look for a file in the '/etc' folder with name 'auto_smb'. net -hosts -nobrowse,hidefromfinder,nosuid Edit the file /etc/auto_master and add the last line: # Prepare autofs to use a separate configuration fileĪutofs needs to be configured so that it knows where to gets its configuration.

Autofs is available for many OS and is preinstalled on Mac OS X so I show you how I mounted my iTunes library folder using this method. With autofs you can easily mount network volumes upon first access to the folder where you want to mount the volume.

Automount on mac os 10.4