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use imac as a second display

to use the imac as second monitor for my macbook, is that they have to run the same system ??


i got one of mine is running yosemite, another big sur os


how can the imac be used as a second monitor ya ? thanks.

iMac 27″, OS X 10.10

Posted on Aug 6, 2021 10:00 PM

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Posted on Aug 6, 2021 10:34 PM

Not likely going to work, however please read Target Display Mode (TDM)

2 replies

use imac as a second display

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