Connecting 2009 G5 to a 2012 cMacBook Pro to use the G5 in target display mode - NOT WORKING! HELP!

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Connecting 2009 G5 to a 2012 cMacBook Pro to use the G5 in target display mode - NOT WORKING! HELP!

G5 has a mini-display port. MBPro has a Thunderbolt. After much research and contacting Apple support directly, I have followed instructions carefully. I found a mini-d cable and have connected the two. When I press command-F2 nothing happens. Yet this should work according to everyone! They've checked the serial numbers also. And I've tried all the troubleshooting suggestions as well. No success. Can anyone help?

MacBook Pro

Posted on Nov 22, 2021 3:39 PM

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Answer 1

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Jack-19

Level 8

46,062 points

Nov 22, 2021 9:02 PM in response to Jojokrikri

And according to Apple's own search using my serial number, my iMac is an "early 2009". I can assure you that it is a 24".

iMac (24-inch, Early 2009) is NOT compatible with Target Display Mode. Only certain iMac (27-inch, Early 2009) and 2010 versions are.

Apple recently updated that support article and added "24-inch" after years of being "27-inch" only. This to us appears to be a system error as 24-inch models never worked with Target Display Mode.

Cheers,

Jack

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Answer 2

rkaufmann87

Level 10

144,856 points

Nov 22, 2021 4:48 PM in response to Jojokrikri

Target Display Mode only works with 27" late 2009 iMacs. If your iMac is a 2009, it MUST be a late 2009 and a 27" model. The graphic you posted has incorrect information on it.

By the way, your 2009 is not a G5, the last G5 were made in 2005 which was pre-Intel based iMacs.

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Answer 3

Jojokrikri Author

Level 1

8 points

Nov 22, 2021 5:03 PM in response to rkaufmann87

You are right about the G5. My mistake. That was my previous computer. I meant to say iMac. And according to Apple's own search using my serial number, my iMac is an "early 2009". I can assure you that it is a 24". I doubt that the screenshot I posted is inaccurate, since it came from the Apple's own website. Anything else you can add that might be helpful?

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Answer 4

rkaufmann87

Level 10

144,856 points

Nov 22, 2021 4:13 PM in response to Jojokrikri

Please CAREFULLY read Target Display Mode (Target Display Mode) , the iMac must be a late 27" model and the MBP much be running 10.13.6 or earlier to work.

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Answer 5

Jojokrikri Author

Level 1

8 points

Nov 22, 2021 4:26 PM in response to rkaufmann87

I think you are reading the page wrong. I am attaching a screen shot of what it says about my 2009 G5.

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Connecting 2009 G5 to a 2012 cMacBook Pro to use the G5 in target display mode - NOT WORKING! HELP!

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