HT204350: Move your content to a new Mac
Learn about Move your content to a new Mac
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Helpful answers
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Oct 8, 2014 6:38 AM in response to davidlea2000by AtlNCS Admin,When Migration assistant starts, it logs out of any users and unmounts all disk volumes. You can SSH into the target machine, or the host machine if attached by a USB or similar and run the following commands to manually mount the disks:
sudo diskutil mountDisk /dev/disk1s1
sudo diskutil mountDisk /dev/disk1s2
you can check that these are now mounted with
sudo diskutil info /dev/disk1s1
sudo diskutil info /dev/disk1s2
Found the solution with more information here:
http://www.hardturm.ch/luz/2014/02/fixing-os-x-10-9-mavericks-migration-from-ext ernal-volume/
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Oct 21, 2014 7:02 AM in response to AtlNCS Adminby Johann Beda,After a similar problem I found http://www.hardturm.ch/luz/2014/02/fixing-os-x-10-9-mavericks-migration-from-ext ernal-volume/ which explains that since Migration assistant logs you out, it also unmounts external disks. As AtlNCS Admin points out, they have a solution in using ssh and command line stuff to mount the needed disk remotely, but someone in the comments had a simpler solution: do not plug in the external firewire disk until after launchine Migration Assistant. So before running MA, eject the external disk that you want to migrate to the new machine (and unplug it) then start Migration Assistant and after selecting "migrate from an attached disk" THEN plug in the disk. It worked for me.