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User profile for user: jcook980
jcook980 Author
User level: Level 1
4 points

mount smb

I successfully installed Monterey on my late-2015 iMac's internal HDD and I have been using for several months. I decided to add an external Samsung T7 USB boot SSD. I properly formated the SSD and used CCC to clone the internal HDD to the external SSD. The T7 boots successfully (very quickly!) but neither the internal HDD nor my AirPort network drives will mount. The internal drive is visible in Disk Utility and I ran First Aid successfully but it will not mount. The AirPort drives are visible in Finder/Network but also will not mount. If I shut down the iMac and disconnect the SSD, it boots just fine (but slowly...) from the internal HDD and all the AirPort drives are visible and everything works exactly as before. I can plug the SSD into a USB port and everything on the drive is visible. Why can't I mount the other drives after booting from the SSD?

iMac, macOS 10.13

Posted on Mar 4, 2023 9:56 AM

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User profile for user: a brody
a brody
User level: Level 10
84,011 points

Mar 19, 2023 5:50 AM in response to jcook980

It shouldn't disable it.


Disk Utility will show Unmount if the drive is mounted on its toolbar when you select the drive in Disk Utility. If it still shows mount, something is wrong with the drive or the connection to the drive.


Keep in mind internal drives are not SMB shares. An SMB share has to be a drive that file sharing turned on, on another machine on the same network. It is a drive that is currently booted while file sharing is turned on.




If the external drive is booted, the only way the internal drive can be accessed on the same machine is mounting it directly. On the Finder menu -> Preferences -> if you aren't showing External Disks as checked they won't appear on the desktop. Your internal drive becomes an external disk when you are booted off an external disk:

The sidebar is managed the same way in the preferences under the Locations section:


For a drive to be shared, you need to use Go menu -> Computer, and file menu -> Get info on the drive

and check shared folder:

Keep in mind this will slow the access on the machine itself. It is better to share individual folders from the drive, rather than the whole drive itself.

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User profile for user: jcook980
jcook980 Author
User level: Level 1
4 points

Mar 14, 2023 7:23 AM in response to a brody

I probably used the wrong description of my problem in the title. After booting from the external USB SSD, I can't connect to either the internal HDD or any of my network connected SMB AirPort drives. I can see the internal HDD drive in Disk Utility but cannot mount it. I can see the network drives but can't mount them as SMB file shares. Does booting from a USB connected drive disable the internal SATA drive?

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User profile for user: jcook980
jcook980 Author
User level: Level 1
4 points

Mar 25, 2023 8:26 PM in response to jcook980

Unfortunately, none of this helped. I can boot from the internal HDD and connect to all my network shares flawlessly. I installed Monterey on the external SSD, cloned the HDD to it and it boots just fine from the SSD. But after booting from the SSD I cannot mount the internal drive. I can see it in Disk Utility, I've run First Aid on the volume, then the container, then disk several times. It finds no problems with the HDD. I've tried mounting from both Disk Utility and from the terminal. It returns this error dialog: Could not mount “Macintosh HD”. (com.apple.DiskManagement.disenter error 49180. As far as I can tell, error 49180 is an APFS container resize error.


I can see both of my Time Capsules through the AirPort Utility. I can edit settings and update each of them. In Finder I can see both Time Capsules but I cannot access either of their drives. When I click on one of the Time Capsule drives I get this message: The operation can’t be completed because the original item for “AirPort Disk” can’t be found. If I try to connect to the Time Capsule as an SMB server I get this message: Check the server name or IP address, and then try again. If you continue to have problems, contact your system administrator.




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User profile for user: jcook980
jcook980 Author
User level: Level 1
4 points

May 7, 2023 10:31 AM in response to jcook980

I eventually solved this problem but I'm not sure why it worked. I completely erased the Monterey external SSD again by formatting as a FAT/MBR drive then formatted again as APFS/GUID. I used the installer to reinstall the latest version of Monterey on the SSD. I booted from the external drive and transferred my files from the internal HDD to the SSD. Rebooted again from the SSD and now I can access everything; the HDD, the network drives, etc.

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mount smb

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