New answers tagged startup
For future reference incase anyone else hits this issue, I took the laptop in and the resolution is mechanical. The hard drive cable has to be replaced. Also, if anyone is more comfortable than I am with breaking into the guts of your laptop, that part is roughly $30.00 Thank you everyone for your help!
Hate to say it, buddy, but if disk0 and base system are all you got, and if base system is part of disk0, your MacBook Pro isn't seeing your hard drive. Reset the SMC if you can (Shift+Control+Option+Power while plugged in, then press power again after releasing all keys.) But if that doesn't work, it's either the SATA controller, the connection to the ...
You need to either insert a Mac OS installer DVD in the optical drive, or a Mac OS installer USB drive in a USB port. You then need to boot from the installer by holding the option key while starting the computer up, then clicking the installer in the list of available devices.
These symptoms imply an issue with your GPU. There is actually an ongoing class-action lawsuit against Apple regarding the AMD GPUs in the 2011 Macs (primarily MacBook Pros). I have seen the issue before in person; my sister's MacBook Pro just encountered it. The symptoms were just as you described: boot chime, Apple logo, spinning loader, grey screen, ...
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