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Model A1311 / Mid 2010 / 3.06 & 3.2 GHz Core i3 or 3.6 GHz Core i5 Processor

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Can't install High Sierra after SSD upgrade

Hello everyone,

I want to bring to new life my old iMac mid 2010 changing the HHD with a SSD. But, because is not my main computer I didn’t want to spend a lot. So I bought a Drevo X1 SSD, I put it inside the iMac, connected the SATA cables and I fixed it with industrial velcro. I also short the thermal sensor out.

The problem comes when I try to install High Sierra.  Whether in recovery mode or using a flash bootable USB drive it does not work: in the first case after the “world logo”  the iMac hangs at the apple logo screen; in the second case after entering in the boot screen (pressing the Alt key) e clinking on my bootable usb drive the iMac hangs again and a completely white screen appears.

What should I do? ( I have already reset the NVRAM)

Thanks a lot

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Your machine has an SATA II (3.0) Gb/s. This drive is SATA III (6.0 Gb/s).

You need to find out if it is backward compatible.

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Thanks for answering!! Actually the SSD that I have is backward compatible because I know that it is has been used with SATA II. And, sorry, I know that in general SATA III is always backward compatible, is it?

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Sadly no, some drives are designed to be downwardly compatible others not. As an example the Samsung 860 EVO is. Review the drives spec sheet if it doesn't say it, it's likely not.

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Oh, thanks I didn't know that:( ...So I'm forced to change the SSD...

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Alessandro Solda' will be eternally grateful.
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