Questions about booting, the process of starting a computer and putting it into a state of readiness for operation.

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3
votes
5answers
15k views

How to properly install Kali Linux on MacBook Air (dual-boot with El Capitan)

I updated to El Capitan yesterday (on MacBook Air 2014). I then decided to install Kali Linux 2.0, and boy it's been one problem after another, so far nothing has gone the way it's supposed to. ...
1
vote
3answers
5k views

Screen backlight does not turn on during bootup, but turns on when accessing recovery partition

I have a late-2011 15" MacBook Pro running Mavericks. I normally don't reboot my computer and can leave it logged in for days on end. I decided to reboot my computer and when it was booting, the ...
0
votes
0answers
28 views

Booting from SD card freezes Macbook

I followed the instructions found here: http://docs.kali.org/downloading/kali-linux-live-usb-install#osx for installing Kali onto a 4 GB SD card. I got output from the terminal similar to that in the ...
0
votes
1answer
57 views

MacBook Pro won't boot. Ideas?

MacBook Pro won't boot. Getting various grey screens. When try to do straight boot, get flashing folder. Other things not working: OS X recovery, start up manager, single user mode, verbose mode, ...
0
votes
2answers
2k views

How to exit Recovery Mode on jailbroken iPhone

What I've searched so far says that my iPhone had goes to Recovery-Mode (Am I right?) because it stuck on Apple Logo and won't start. What I've tried so far : What is Soft DFU mode, and how do I ...
0
votes
0answers
57 views

Way too many disks in rEFInd?

I'm using rEFInd on my mac that is installed on its own partition. Everything works fine except when I boot into rEFInd (the "EFI Boot" option under the disk selection menu on startup) it shows my OS ...
0
votes
1answer
232 views

16GB RAM 1067 DDR3 not Booting on MacbookPro7,1 (13 in Mid 2010)

I have a mid 2010 13in MacBook Pro (7,1) with a 2.4GHz Intel Core 2 Duo processor running OS X 10.11.3 (El Capitan). I had 4GB of RAM (2x2GB) and I read somewhere that despite Apple's stated max of ...
1
vote
2answers
455 views

MacBook Pro wont boot at all (El capitan)

My MacBook Pro stopped working. I was using it without a problem, then all of a sudden the screen went Blue. It didn't respond at all so I did the obvious, force shutdown. Since that moment the ...
1
vote
1answer
3k views

Unable to boot into recovery mode on El Capitan MacBook Air

I want to disable System Integrity Protection, So i am trying to run this command csrutil disable On recovery mode, But i am not able to boot in Recovery mode, It keep showing user login screen, I ...
1
vote
1answer
338 views

iMac Boot Camp: No bootable device error when installing Windows 7

System: iMac (21.5 inch, Mid 2010) OS: Yosemite 10.10.5 I used Boot Camp Assistant to create a bootable USB for a Windows install (I have a Windows 7 ISO image through school) and a partition, but ...
0
votes
0answers
88 views

Gray screen of death when booting

I know this has been brought up many times before here, and I know there has been many answers and suggestions to this problem, but so far nothing seems to be helping me in my situation, so I thought ...
0
votes
1answer
150 views

Is it possible to encrypt the boot disk in El Capitan?

On my iMac running OS X 10.11.3 I'd like to encrypt as much as possible of the built-in disk -- like that I don't need to worry about replacing/sending in a broken disk. From a casual few web ...
1
vote
1answer
985 views

Set EFI to boot Windows via (U)EFI one time

On my late 2012 Mac Mini, I have installed both Mac OS X Mavericks (with FileVault) and Windows 8.1 (natively, not via Bootcamp): /dev/disk0 #: TYPE NAME ...
1
vote
2answers
28 views

Make Mac boot upon plugging in power

I have a MacBook and I'd like it to boot automatically upon plugging it into a power source. Is there a way to do this?
0
votes
1answer
182 views

Ghost partition, Windows BSOD

Today I was trying to set up Windows on my MacBook Pro (15", Late 2011) over BootCamp. I used the modified Info.plist-trick to create a bootable Windows 8 USB-drive and create a Bootcamp partition. ...
1
vote
2answers
328 views

Macbook gets stuck on Grey Screen, won't boot normally

I've tried many steps so I'll list them here, I can do a reinstall but I prefer to figure out the actual cause of the problem and I don't think a reinstall will solve it. Macbook 2007, OSX version 10....
0
votes
0answers
36 views

Debugging verbose boot mode

My issue is that a MacBook Pro (mid-2012) started to have problems booting up today so I'm trying to debug the boot process by running it in verbose mode. The problem is I can barely read what it ...
0
votes
1answer
112 views

Cannot access Boot Camp partition after OS X reinstall

I've already used Boot Camp to install Windows on my computer. A while back I had to erase my hard drive and reinstall Mavericks. Once I did that my Windows portion still exist as a volume, but when I ...
0
votes
2answers
206 views

Is it possible to run Android on iOS?

Ok so I was thinking, Can you run Android on a iOS device? I did some research and Android could run on ARM (Most apps would not work) but how come no one has tried to run it. Whats holding them back?
0
votes
1answer
36 views

Can I boot my recovered SSD as a Mac OS X installation

I recovered an SSD from an old, upgraded 2008 Macbook Pro with a broken keyboard in order to recover the data from it. Initially I was planning to put it in my other Mac Pro and simply copy the data ...
0
votes
2answers
123 views

My Macbook Pro (2011) won't boot into single user mode

I saw Possible reasons (other than Open Firmware Password Protection) for not being able to boot into single user mode?, but it didn't help any, since I'm using the laptop's keyboard. Yes, my Mac can ...
0
votes
1answer
66 views

My iMac Doesn't boot it. Hangs with spinner and verbose mode can't boot

I have my iMac and I have to install Yosemite because I got iMac with older version when I got it. Then I did too many updates but I had my iTunes account and I had my credit card option set to "None" ...
0
votes
1answer
116 views

SNB Framebuffer did not show up,unload - MBP won't boot

I recently got a new MBP. My older MBP (early 2011, 13") has some stuff on it I would like to transfer. I tried using migration assistant, but it appears that they need the same OS versions. I tried ...
0
votes
0answers
121 views

iMac will not boot up with built-in LCD connected, but will boot without it

When I press the power button on my iMac (Early 2008 24" A1225 EMC2211 MB325LL/A) it begins to start up, but halfway through the start chime it loses all power and needs to be unplugged before the ...
0
votes
0answers
71 views

Gray screen when booting mac on external monitor

I've run into a problem while booting my MacBookPro (from 2014). When I restart the computer without any monitor attached, I hear the chime, but the screen on my laptop screen stays black. I usually ...
2
votes
1answer
46 views

MacBook Pro - not booting - going around in loops?

After a harrowing couple of days, I found this site and am hoping someone can help. I have a 2011 MacBook Pro which has recently started having problems booting. During a game session (SIMMS), it ...
0
votes
0answers
24 views

Install Windows to portable hard drive?

I'm trying to install windows on a portable 1tb hard drive and boot it via boot camp on the same hard drive. Want to know if this is possible? My main motivation is due to my school having mac pros ...
0
votes
2answers
122 views

Connecting external display turns MacBook screen black

For years, connecting to external monitors on my MBP 9,2 (10.10.4) worked just fine (except the occasional crash). Until yesterday, where I had three crashes in quick succession. Now when the display (...
0
votes
0answers
30 views

MacPro 2.1 won't boot from USB nor from MacBook via target mode

My Mac Pro 2.1 (I believe 2x 2.33 quad / 32GB ram / startup disk is a SSD / OS X Yosemite) suddenly started showing up the ?-folder instead of booting so I thought the SSD died. I connected the Mac ...
0
votes
0answers
32 views

Can't boot, can't do a recovery, can't reinstall

I try to start in single-user mode and I get about 7 lines of text and 3 lines of dots. It says: Efiboot loaded from device: (then a long alphanumeric number) Boot file path: \system\library\...
1
vote
1answer
629 views

Thin green lines on boot, then screen goes grey (late 2011 MBP - 8,2)?

Last night I was using my late 2012 MBP (higher res screen, dual intel/amd graphics), and the screen suddenly went black. I left it go for a minute - no change. I open and closed the lid - it ...
2
votes
0answers
51 views

Unable to Boot MacBook using any means after attempted Fedora Install

Wondering if anyone has any last ditch efforts I can try here to salvage my macbook! I recently attempted to install fedora to dual boot on my Late 2011 Macbook Pro, the install crashed, the ...
0
votes
0answers
69 views

Cannot change startup disk - Yosemite

I've got a clean install of Yosemite on a brand new hard drive. All good, up and running (got to boot to it manually). As the title says, I can't get the system to boot from this hard drive. Error ...
0
votes
1answer
37 views

Don't want my hard drive to die again!

A couple of months ago, my Mac Book Pro wouldn't start up - it would make it halfway through and then power down. I took it to the repair store, and they said the hard drive was broken, and they ...
0
votes
0answers
50 views

MacBook freezes and can't restart without PRAM reset

I have a Mid 2012 13-inch MacBook Pro and am running OS X Version 10.11.2 (El Capitan). When my problem first occurred, I was running Yosemite. Here's the short story: my screen will occasionally ...
0
votes
0answers
61 views

Boot Camp Assistant - Windows dosen't show up on boot!

I followed all steps to get Windows 7 on my Mac with Boot Camp Assistant and everything was working out until I was finished creating a BOOTCAMP partition and when my Mac restarted it said "No ...
0
votes
1answer
125 views

Mac Pro custom graphic black screen during boot

My 1st gen MacPro with a custom graphic card (ATI Radeon) does not show any boot prompt. Actually it doesn't show anything until Aqua comes up. I need boot prompts and pre GUI screens for multiple OSs....
0
votes
0answers
30 views

Imac 27" EMC 2546 boot issue (stalls boot at ~30%)

I've seen somewhat similar other such issues on many posts, but nothing that gives me a workable solution to my boot issue, so here is what's happening: Imac 27" late 2012 EMC 2546, with the recalled ...
0
votes
1answer
350 views

Mac book Pro [2011 model] - Screen bit distorted and greenish tint and does not boot completely after the apple logo and progress bar loads

My Macbook Pro hung so I forced restarted it but on restart the screen was bit distorted and had greenish tint (Picture below) also it never goes past the Apple logo and progress bar to boot ...
3
votes
2answers
6k views

BuildError(): error building a user of type

I'm getting a strange message each time I boot. For a quick second before the Apple Logo appears I see the text: BuildError(): error building a user of type 0x20010008 Then the Logo appears, and ...
0
votes
1answer
37 views

How do I instal OS X when boot combos don't work?

I'm trying to instal OS X on a 2013 Macbook Air. I erased the OS X partition, the computer is booting to my windows 7 bootcamp partition by default. All boot key combinations(C, Option, CMD+Option+R, ...
0
votes
1answer
93 views

What is it that prevents using a 3rd party SSD in a 2015 rMBP?

I bought an Early 2015 MacBook Pro Retina model with the 128GB SSD and have been wondering what to do if I need more disk space.. then I found out that it's currently not quite possible to just stick ...
0
votes
0answers
19 views

Create bootable windows on external HDD

Hello I'm trying to create bootable windows on this external HDD http://www.amazon.com/dp/B0046A8MSM/ref=twister_B004DTS99S?_encoding=UTF8&psc=1 but without success. I'm following this tutorial ...
0
votes
0answers
57 views

Issue with OS X Startup Disk in System Preferences when using EFI dual boot

I have Windows booting EFI on my Mac mini (Late 2012). It has two physical drives with one EFI partition (on the OS X disk). If I option boot I see OS X and EFI (Windows) choices and everything works ...
0
votes
1answer
1k views

Serious Boot / Sleep Problems

Two days ays ago I closed the lid of my macbook pre for the night as I have done for the last 2.5 years but when I opened the lid in the morning the screen didn't show. It seemed to be 'alive' (ish) i....
0
votes
1answer
3k views

How to run Apple Hardware Test with broken keyboard?

mid-2011 13" MBA running Yosemite Coffee spill has left keyboard of mid-2011 13" MBA non-functioning. Even power button doesn't work, I boot by shorting the two solder points on logic board. I've ...
0
votes
2answers
80 views

2007 Macbook Pro will not boot to HDD

I have a 2007 MacBook Pro running Yosemite from an off the net upgrade from Snow Leopard and the graphics went crazy while trying to watch a TV program on my Slingbox app. I forced a shut down by ...
1
vote
3answers
6k views

iMac gets stuck on the “White Screen of Death” during startup

I have a 27" iMac (from 2011) that's running Yosemite and each time I turn the power on, it shows me the Apple logo, it starts to load, and the screen goes white and simply hangs there. To solve this ...
0
votes
1answer
12 views

DVD stuck in 2006 iMac, won't boot

So I put a DVD in and it wouldn't come out. I wanted to try the "hold left mouse during start up" method of getting it out and now it won't boot and I can still not get the DVD out. It is my GF's old ...
0
votes
2answers
88 views

Installing Microsoft Windows VM on OS X

I'm kinda new to the Mac OS, in fact I got this current Mac this week so I'm pretty noob with it. I need to run a VM with windows 11 and 10 for testing purposes. So I downloaded and the virtual ...