I have a MacBook Pro mid 2011.
I've installed a SSD on the main bay, removed the optical drive and installed a caddy with the a regular HDD on it.
The OS was installed on the SSD.
This setup works fine!
Last week I had to force a shut down by pressing and holding the power button. After that, my system didn't boot.
(a question mark apperars)
I install El Capitan again on my HDD and right now I'm trying to format/erase/restart my SSD.
If I change hard drives places (putting SSD in the caddy and HD on main bay) it works… I can erase the SSD, reformat, etc, using Disk Utility.
But with the HDD on caddy and the SSD on the main bay, my mac dont recognize my SDD and I can't erase, or format it.
My goal here is to reinstall El Capitan on SSD using it on the main bay because its faster and have a better performance.
Does anybody have an idea about it?
Best Answer
First, make sure it's not just a regular connectivity problem. I used to have an older MBP that displayed the same symptoms every now and then (with the stock HDD). Whenever it threw question-marks or missing file-system symbols at boot-time; I'd just pop it out, blow it like an old Nintendo cartridge, and pop it back in. If that's not the problem;
(top-right).