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Model A1311 / Mid 2011 / 2.5 & 2.7 GHz Core i5 or 2.8 GHz Core i7 Processor

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SSD installed second drive, NOT visible after RESTART, only SHUT DOWN

I have installed a Kingston SSD following the guide on this website,

I have formatted it from the systems HD OS X boot partition as GUID Extended. I would now like to install OS-X El Capitan on it.

The drive is visible when the computer is turned ON from OFF in disk utility/desktop, but if the computer is restarted, the drive is not visible. So its impossible to make it an OS X Boot drive and I'm not sure I want to anyway with it behaving so strangely.

Any bright ideas?

Update (07/06/2016)

I ran the OS-X installer from HD partition, specifying the SSD as install directory. It restarted, it then asked which drive I would like to install to, with only the current HD visible, as i expected.

Then I shut down, turned it on again, and it now picked up with the SSD installation as it should have, as I suppose it was now visible.

So, some progress, but i expect weird behaviour with restarts in the future, So any ideas very appreciated.

Thanks!

UPDATE:

OS X works on new SSD, boots nicely,

However.... Restarting causes it to boot into the old OS-X installation on HD. I need to shut down entirely to boot into SSD OS.

Answer this question I have this problem too

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Installing the OS can be a bit confusing!

The reason you saw the SSD drive disappear was the system needed to prep the drive within Disk Utility or the OS Installer app. Anytime the lowest structure of the drive is being altered the Disk Utility as well as the OS Installer app needs to remove it from the Desktop. This is normal!

It sounds like you got the drive setup now, all you need to do here is get the SSD to become the boot up drive.

With the systems running (it makes no difference which drive it booted up from) go into your Systems Preferences there you will find a control panel called Startup Disk. Open it up unlock it and then alter the selection to the drive you want as the boot drive. That should do it as an alternate method you can always leverage the Boot Manager service by holding the Option key this is useful when you need to do some repairs to the current boot drive as Disk Utility won't allow you to run repair option if the drive you are repairing was the boot drive.

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11 Comments:

Thank you for the helpfull response.

I believe that something else is going on but I could be mistaken.

To clarify:

In "startup disc"(right now) I have 2 options, MAC HD and SSD, SSD is highlighted.

When I "turn on" the Imac after "shut down", it will boot into the SSD.

However, if I "restart" the Imac, the MAC HD will be boot. And upon loading, the ssd will not be visible in disk utility.

Thanks allot for your help.

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Did you select the boot drive from within the Startup control panel to the one you want?

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I beleive so yes, if "Startup control panel" is "startup disk", the ssd is highlighted.

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So to be clear here...

The system is booting up as you want it to with the SSD as the boot disk all of the time.

The issue now is only that you don't see the SSD within Disk Utility. Is that correct?

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No, the issue is that the system wont boot (into the correct drive) if it is restarted, only if it is physically turned off and turned back on again. After a "restart", it boots into the old partition, and the ssd is not visible anywhere.

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