Target disk mode

After a normal restart, yes. While in it, the only thing it can be used as is an external drive.

(245946)

azby1164 Said:

"Target disk mode: If I restart my computer in Target Disk Mode will it still work"

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IDK. You can try it and find out: Transfer Files Between two Mac Computers Using Target Disk Mode - Apple Support

IMPORTANT:

Back Up your Mac First:  

Be certain you Create a Time Machine Backup of your Mac, so that way you can have something to restore your Mac from, should anything go wrong with the reconfiguration.