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firmo

macrumors newbie
Original poster
Mar 27, 2018
2
0
When I try to install High Sierra, I get the following message:


“We could not complete your purchase.

This version of macOS 10.13.3 cannot be installed on this computer.”


My spec is as follows:
  • OS X Yosemite – Version 10.10.5
  • MacBook Pro (13-inch, Mid 2009)
  • Processor: 2.26 GHz Intel Core 2 Duo
  • Memory: 8 GB 1067 MHz DDR3
  • Startup Disk: Macintosh SSD


I also tried installing via a different method: [Downloaded the OS using a different Mac, transferred it to mine.] This also has the same result.


Is the issue that my MacBook is just too old to install this OS? My Mac runs brilliantly – I have no issues with it whatsoever, EXCEPT that there is now software that I am unable to use.
 

webbga

macrumors regular
Feb 22, 2014
249
164
Cincinnati, Ohio
When I searched for a compatibility list this is what I found. Looks like you may have just missed the cutoff:

macOS Sierra requires at least 2 GB of RAM and 8 GB of storage space and will run on:
  • iMac: Late 2009 or newer.
  • MacBook and MacBook Retina: Late 2009 or newer.
  • MacBook Pro: Mid 2010 or newer.
  • MacBook Air: Late 2010 or newer.
  • Mac Mini: Mid 2010 or newer.
  • Mac Pro: Mid 2010 or newer.
 
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firmo

macrumors newbie
Original poster
Mar 27, 2018
2
0
Thanks webbga.

I was hoping there would be some kind of workaround, but there probably isn't.

I'll have to settle for El Capitan...
 

Phil in ocala

Suspended
Jul 14, 2016
728
328
I'm running El Capitan on my 2009 17" MBP ... runs great.
??????????
I wish this would have happened to me...this H.S OS is a big pain and wish I could go back!!!!
Horse rearing up.jpg
 

MSastre

macrumors 6502a
Aug 18, 2014
614
278
??????????
I wish this would have happened to me...this H.S OS is a big pain and wish I could go back!!!! View attachment 755733

That's a good reason to always make a current clone of your system drive before doing any OS upgrade. I can go back several OS versions on all the Macs I own, just in case something I need no longer works. Faster and easier than using Time Machine. I like SuperDuper, but Carbon Copy Cloner works as well.
 
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