Unfortunately, I’ve confirmed that it is a 3G and OWC says that since it works in the external dock it is working properly so they won’t accept it as a return.
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my mac won't boot after upgrading to SSD
- Thread starter johar
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Unfortunately, I’ve confirmed that it is a 3G and OWC says that since it works in the external dock it is working properly so they won’t accept it as a return.
Bummer. That's bad.
There's a reviewer on Amazon who claims that the 3G wouldn't work with his system with either Snow Leopard or Lion (he/she was getting the same "Unknown device" message). The reviewer did not say if that was the case if used in an external USB enclosure. Which OS are you using?
Check your EFI/SMC firmware: https://support.apple.com/en-us/HT201518
The NVRAM/SMC reset is suggested as a catch-all solution. A lot of times it doesn't solve problems, but it's relatively easy to do.
https://support.apple.com/en-us/HT204063
https://support.apple.com/en-us/HT201295
If those don't work, if you know somebody that has a Mac with the MCP79 (it would help if was a Mini as well), you could have them try it out in their computer and see if works - if it does, something is wrong with your computer. Or you could try a SSD known to work with the MCP79 and try it in your computer.
Thank you for all the suggestions. OWC’s page does make the following statement:
So I thought I shouldn’t have any problems. It is starting to look like an issue with my particular Mini as the SSD works everywhere else (Mac Pro, drive dock, etc).
So I thought I shouldn’t have any problems. It is starting to look like an issue with my particular Mini as the SSD works everywhere else (Mac Pro, drive dock, etc).
In searching on the web, besides the Amazon review I mentioned, there are people who report issues with the 3G not being recognized at first (particularly in doing an OS install to the 3G, but also also in just putting the drive in the computer) but if they try something different in doing the install or a different OS version, then it gets recognized. It happens with different OS versions from Snow Leopard to Mountain Lion.
I finally got back to this issue this weekend. I reformatted the SSD and put it back in the Mini. Initially, I got the same response - nothing. But then I happened to notice that the SSD had mounted later on - it was sitting there on my desktop.
Unfortunately, it’s still not consistent. Sometimes it will disappear until I reboot the machine. Other times it won’t be there when I boot the machine. I have managed to clone my hard drive onto it, but I’m not sure about using it as a boot drive until it works consistently.
Unfortunately, it’s still not consistent. Sometimes it will disappear until I reboot the machine. Other times it won’t be there when I boot the machine. I have managed to clone my hard drive onto it, but I’m not sure about using it as a boot drive until it works consistently.
I still cannot get consistent results, but I did some more searching and found people mentioning issues with the “put hard disks to sleep when possible” setting in the Energy Saver settings of the Control Panel. I get better results if I uncheck that.
From this thread: https://forums.macrumors.com/threads/imac-2012-wake-from-sleep-issues.1529750/
The recommendation is to “Try this: “sudo pmset autopoweroff 0" and "sudo pmset standby 0””
That sounds like the next step.
From this thread: https://forums.macrumors.com/threads/imac-2012-wake-from-sleep-issues.1529750/
The recommendation is to “Try this: “sudo pmset autopoweroff 0" and "sudo pmset standby 0””
That sounds like the next step.
I had this same exact issue with El Capitan and my wife's 2010 Mac Mini (although it just has the standard 320GB HDD) that the progress bar wouldn't move. How I fixed it was after it didn't move for an hour I restarted the computer and it got back to the Apple logo screen and the progress bar went farther but stalled again. Rebooted and it continued again and actually finished. Very strange as I have never witness this on the iMacs.