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First of all, there's no firmware password or anything fancy. I'm trying to diagnose a late-2011 MacBook Pro 15", and I'm trying to get into the single user mode. I press and hold Cmd+S (the left Cmd, if it changes anything) but I'm not getting into the mode. I've tried pressing (and holding) it before pressing the power button, at the same time, a little after etc. I've tried all the combinations. It just won't enter. It will keep booting or let's say (try booting) into the OS where it gets stuck. When I press Cmd+S, however, I can see a very brief terminal in the middle for a very short/split second, and it disappears as I haven't pressed it all. What am I doing wrong?

UPDATE: I've tried Cmd+S on another 15" MacBook Pro from 2011, and it behaves the same: It just won't let me into recovery mode. They are both Yosemite, one is 10.10.3, and I can't tell the other one's minor version since I can't boot into the system in any way (and it's owner doesn't know the version either).

UPDATE 2: As Buscar웃 asked me about the verbose mode process, I took a video of booting into verbose mode: https://s3.eu-central-1.amazonaws.com/downstage-eu0/IMG_1942.MOV

UPDATE 3: Here's a GIF version of the video. I had to reduce quality and size a lot, but you'd get the general idea:

enter image description here

  • I assume this is the same Mac and the same problem you are talking about here. You won't get better answers by posting two questions, if necessary please edit the original question to add details. If it's not about the same Mac, feel free to request a reopen. – nohillside Apr 22 '15 at 20:07
  • @patrix not exactly. that question is about a general boot problem, this is specifically about getting into Single User Mode (and I'm not 100% sure that getting into SUM will solve my problem about booting). In addition, I could replicate this behavior on another Mac too (but I think I should add it to the question) a few minutes ago. – Can Poyrazoğlu Apr 22 '15 at 20:10
  • Not sure what you tying to do, the cmd+r is the Recovery mode, The cmd+s is single user mode (with terminal) window and the cmd+v is the verbose mode. – Ruskes Apr 22 '15 at 20:26
  • @Buscar웃 I know, recovery doesn't work, booting from bootable USB also doesn't work, but that's another case. I was wondering why two different MacBook Pros won't boot into single user mode with it's designated key combination. – Can Poyrazoğlu Apr 22 '15 at 20:28
  • does the verbose mode work ? – Ruskes Apr 22 '15 at 20:30

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