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You are the One

macrumors 6502a
Original poster
Dec 25, 2014
633
795
In the present
Updating my MBP 15", 2.2 i7 8 GB (2011) with 10.10.3 and at reboot i got the flashing folder with question mark.

Option->Power booted and got the firmware dialogue. Entered the firmware PW and it booted up to userlogin.

Logged in and the installation continued.

Just saying, in case anyone else have the same experience.
 

You are the One

macrumors 6502a
Original poster
Dec 25, 2014
633
795
In the present
Updating my MBP 15", 2.2 i7 8 GB (2011) with 10.10.3 and at reboot i got the flashing folder with question mark.

Somehow, for me, this problem is connected to having a firmware password.

If I turn the firmware password off, it boots albeit taking longer time for the initial boot sequence before the login many shows.

When I turn the firmware password on again, I get the flashing folder with question mark.

Any ideas?
 

cruiser76

macrumors newbie
Sep 12, 2011
4
0
You should choose start-up disk manually from the settings after the system is up. Next restart , problem will be solved.
 

TheMacAvenger

macrumors newbie
Jan 23, 2009
12
9
The Deep South
Yep - same issue here

...of course, it didn't occur to me that it might have to do with the firmware password, so instead I wasted a lot of time booting my MBA from a USB 3.0 flash drive with TechTool Protogo on it and fooling around with all sorts of tests and permissions repairs and other nonsense. Should've gone looking for this thread first! :D
 

Luba

macrumors 68000
Apr 22, 2009
1,807
379
Was this an installation bug, or intentional that you have to enter the firmware password to complete the installation?

Must be a bug, because it didn't happen to my other Mac.
 
Last edited:
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