Model A1224 / Mid 2007 and Early 2008 / 2, 2.4, or 2.66 GHz Core 2 Duo processor

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"OS X could not be installed on your computer"

I'm trying to install El Capitan onto a 2008 iMac. I'm installing it onto an SSD that has been installed in place of the internal optical drive using an iFixit enclosure. I keep getting an error saying,

"OS X could not be installed on your computer

An error occurred while updating system extension information.

Quit the installer to restart your computer and try again."

This is the second drive (from Crucial) that has given me this error. I had another drive in that internal enclosure that worked just fine until it SMART failed.

The drive passes all TechTool Pro checks. The problem doesn't seem to be the drive. OS X installs to the internal HDD just fine.

What's going on?

imac_c2d_osx_install_fail_2017.pdf

Here's the Installer Log.

12.7 mm PATA Optical Bay SATA Hard Drive Enclosure Image
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Post the log using https://pastebin.com/ and share the link here.

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Your systems specs: iMac 20" 2.0 GHz Core 2 Duo

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Log added. Thanks.

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I'm wondering if the SSD you got is able to run in this system. Keep in mind Crucial MX300 SSD only states support for SATA III (6.0 Gb/s). Review the system specs I posted in your Q)

I think you'll need to try a different SSD here.

Some earlier Crucial SSD models did have auto sense allowing them to work in the older SATA II (3.0 Gb/s) systems. I don't think the Crucial still sells it.

I would give Samsung a try: Samsung 850 EVO Here you can see Samsung supports all three SATA data rates "SATA 6Gb/s (compatible with SATA 3Gb/s and SATA 1.5Gb/s)" unlike the Crucial MX300 SSD.

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Interesting. Here's the drive I have: http://www.crucial.com/wcsstore/CrucialS.... Crucial's website says that it's compatible with my Mac. I suppose that doesn't mean that it's compatible with the iFixit adapter though.

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The adapter is not the issue its the SATA speed SATA II (3.0 Gb/s) Vs SATA III (6.0 Gb/s) of the drive. I do believe the MX300 is fixed SATA III (they only state SATA III on their website) unlike the Samsung is Auto sense.

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I have the BX300, not the MX300. I'm not sure which specification in the spec sheet to look at. All I know is the M4 (http://www.crucial.com/wcsstore/CrucialS...) worked fine.

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Well, it's not the drive. I hooked up the SSD to the standard internal HDD SATA port, and it worked fine. I installed OS X on it, and there were no problems. When I put it back into the optical drive port, it kernel panics when booting.

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Well, thats a new one for me! I've seen odd cases in the MacBook Pro's with the optical drive adapter I've not seen the issue with the iMac's. But it doesn't surprise me as this is such an old system.

The issue the MacBook Pro's faced was the optical drive SATA port was mis-timed so a auto sense drive would not latch to the correct data rate the SATA port needed. It made no difference who's SSD SATA (auto sense II/III) you used as the issue was the system and not the carrier either. Here's a good writeup for reference: OWC Data Doubler.

Sadly you'll need to find an older SSD drive which is a fixed SATA II (3.0 Gb/s) to make this work. Your other option here is to replace your HD with a SSHD so you can gain the zip of the SSD cache on the drive and still have the deeper storage of a traditional HD. I would go with a 3.5" Seagate FireCuda.

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