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

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1answer
22 views

Mac Pro 2,1 updates and firmware question:will the firmware from the older work with the newer and vice versa?

I'm pursuing an alternative boot drive so i can explore a yosemite or elcapitan environment from my old mac pro 2,1 currently in the last version of snow leopard. (with legally purchased soft ware ...
3
votes
1answer
260 views

Does Windows, running on latest Apple computers, see boot disk partitioned as MBR or GPT?

From my understanding, the newest apple computers boot Windows in EFI mode. Traditionally, Windows has seen the boot disk as an MBR partitioned disk. In fact, the boot disk (i.e. /dev/disk0) has aways ...
2
votes
1answer
3k views

Can't boot MacBook Pro 13" (mid 2010)

The problem occurred after installing the update SMC 1.6 on Apple - OS X Mountain Lion: First for a long time was a white screen and noisy cooler After the system battery icon was crossed out and ...
0
votes
1answer
69 views

MacBook Air charging light stays amber and does not go green and machine does not boot or even chime

I have an 11" MacBook Air 6,1 from mid 2013 that I found discarded and had restored but now seems dead again. I got the machine with a broken screen backlight and missing SSD. I took it to the Genius ...
1
vote
2answers
3k views

MacBook Pro Mid 2009 does not boot without resetting system management control (SMC)

Today i started my macbook pro and after some seconds it stopped working (just turned). I was not able to start it again. After some apple support search I found a page that described how to reset the ...
3
votes
3answers
13k views

Cannot access vital boot options on Mac Pro with OS X Lion

I have this used Mac Pro (mid-2010) that I recently bought, that came with OS X Lion installed. It was apparently installed from an image because there are a lot of installed apps and, though there is ...
0
votes
1answer
55 views

Installing El Capitan from a bootable DVD

I have El Capitan on a bootable DVD. I restart my Mac and hold the option key until the disks come up and I choose EFI Boot (name of the disk is different than what it shows at the time of booting). ...
1
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4answers
35k views

Macbook Pro Crashing and Startup Failure

Firstly, some background information for the problem: My girlfriend's Macbook Pro had an issue that was annoying, but not fatal. Roughly once a day (but sometimes not for a few days, and sometimes ...
0
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1answer
32 views

Bootcamp cannot find both systems at startup

Something strange happened: I closed my macbook pro while using windows 10 When I opened it again it didn't wake up for a while so I forced it to shut down by pressing the power button for 10 ...
0
votes
1answer
60 views

How to check if secure boot is enabled in OS X?

I got this question is secure boot enabled? but I do not know how to check it in my Macbook Air 2013-mid with El Capitan 10.11.4. How to check if security boot is enabled in OS X?
0
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0answers
20 views

Mac OSX EFI problems, urgent help needed!

So, I recently did an update on OSX, booted my computer up and I discovered that I the update replaced my EFI boot rom and the SMC with the incorrect SMC, so now I can't use my battery and the ...
0
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0answers
9 views

iMac 24" 2.16 ghz core2duo

I'm trying to install Snow Leopard but iMac won't boot from the install disk. I've also tried booting from a flash drive with Snow Leopard Install on it with no luck. It also will not boot from the ...
0
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0answers
9 views

iPad mini won't boot

My iPad Mini's battery was drained and I tried to charge it. When I came back I tried to open it but neither the apple logo and charging sign appeared. I tried to press and hold the home and reset ...
0
votes
0answers
40 views

iMac A1208 - Mac OS X 10.4 Install Problem

I'm a French user and I have a iMac from 2006/2007. I have changed the logic board. It's ok, but i want to do a fresh install of OS, (10.4), but the optical disk is KO. I have the official CD (but it ...
0
votes
1answer
21 views

MacBook Pro (2006, A1150) fails to boot

My MacBook Pro (2006, model A1150) fails to boot beyond the white screen AFTER the screen with the Apple logo and spinner. I have tried: Resetting PRAM (doesn't work) Resetting SMC (how can ...
2
votes
4answers
41k views

MacBook Pro flashing question mark but I can't repair because hard disk not found in disk utility

Today my MacBook showed up some wheel of death and I waited and waited and then after a long time (10 minutes) decide to force shutdown. Ok, I know its not a good idea but I've done this before and ...
0
votes
0answers
35 views

How to get rid of the boot gong sound without OS X Installed?

If you google it, there are tons of solution with writing to NVRAM from OS X Terminal, but on my MacBook Air I deleted OS X in favor of Windows. Edit: I already got the tip here to start the Apple ...
0
votes
1answer
94 views

Can't boot into OS X Recovery Mode

I would like to I've recently installed Debian Linux on my Macbook, which required repartitioning the hard drive. I now can't boot into Recovery Mode. Holding down Command+R on boot brings up ...
0
votes
1answer
23 views

Is it possible and relatively easy to boot a 2013 MacBook Air from an external drive?

Given a MacBook Air that's working but with dead display and SSD, can I use it as a desktop-only machine with an external monitor and external hard drive? The guy at the Apple Store Genius Bar this ...
3
votes
1answer
46 views

Run nrpe on boot w/o a logged in user

Running a Mac mini with server app. (El Capitan 10.11.4 & Server.app 5.1) Installed Xcode, brew, and nrpe via brew. Works fine as such. It's not sensible to have to remote desktop to it and log ...
0
votes
1answer
87 views

How to fix bootcamp boot after removing hybrid MBR

I've updated bootcamp to Windows 10 which should support GPT with protective MBR without any hybrid tricks. I have 6 partitions on disk0 so hybrid MBR is also inconsistent with GPT and it's somewhat ...
0
votes
1answer
35 views

Can not boot MacBook Pro 2011

I have a MacBook 2011 running OS X 10.11.5, 16GB RAM, 512GB SSD Drive. Today when I am restarting my computer, I accidentally pressed Cmd+R while booting. Now I try and restart my computer, it shows ...
2
votes
0answers
32 views

Bootcamp: How do you reboot from Windows to Windows via script in OSX El Capitan?

I'm asking this because I think it would be incredibly useful to myself and other Bootcamp users. I currently have my default boot drive set to restart to my Mac partition and already have a script ...
9
votes
5answers
2k views

What would it take to make an iPad support multiple user accounts?

As a mobile computer, the iPad is very personal, but it also begs to be shared. And that's a problem. I don't want my friends to be able to check my emails or delete my high score when they play with ...
0
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5answers
494 views

Error Installing OS X El Capitan on Early 2008 Mac Pro from USB

I am trying to install OS X El Capitan on an early 2008 Mac Pro. I wiped the hard drive on the Mac and followed this tutorial to create a USB boot drive with El Capitan using a Macbook Air running El ...
3
votes
1answer
323 views

Not enough storage for El Capitan; no way to free up space

I wanted to upgrade my Macbook 2008 from Yosemite to El Capitan. Unfortunately, when I downloaded it and restarted my computer, on the "select the disk on which to install" page the only location, ...
0
votes
1answer
64 views

Boot Camp makes unbootable USB drive

I used Boot Camp Assistant to create a Windows 10 install disk. However, the disk is not bootable. I am confused as to why Boot Camp Assistant would make an install disk not bootable. Can someone ...
6
votes
5answers
182k views

How do I create a Mac bootable USB drive using Windows?

My MBA 2012 with OS X 10.9.4 Mavericks won't boot anymore - it simply freezes after the initial jingle. I already tried resetting NVRAM and SMC, but to no avail. I don't have any time machine backups. ...
0
votes
0answers
293 views

OS X install USB key not detected

I've trying to reinstall a clean OS X Yosemite on a MacBook Pro (Mid 2013 model) for the past few days but had no success. I created a bootable USB drive using createmediainstall (as mentioned in: ...
1
vote
1answer
118 views

After login mac is stuck on progress bar

I have 15 inc Mac book pro with Mavericks installed. I can successfully on the Mac but I cannot login to my account. Upon press enter I get progress bar and after that I get grey screen then nothing ...
1
vote
2answers
5k views

iPhone 5 stuck at Apple boot logo after screen replacement

My girlfriend smashed her iPhone screen. Being technically competent and after looking at YouTube videos of how to fix it I thought I would give it a go. After replacing the screen and moving the ...
4
votes
2answers
2k views

Using the -Bless Command on Multiboot Macs with 10.11 El Capitan

As part of our standard deployment, we tend to deploy multiple OSs on Macs, from 10.7 to 10.11. However, with the new SIP (System Integrity Protection), the -bless command no longer works properly. I ...
0
votes
2answers
66 views

Creating a bootable Linux distro compatible with Mac OS X [duplicate]

I have downloaded the appropriate Linux distro (in this case Fedora Xfce Live) and I have partitioned the USB with Disk Utility and attempted copying both the Fedora iso, and a Fedora iso converted to ...
0
votes
0answers
103 views

Stuck in update boot (not enough disk space)

I'm currently having a Macbook Air 120GB SSD where I tried to update the OSX to El Capitan. Very first it did not want to update due to lack of disk space. After I cleared up some photos so it had ...
1
vote
0answers
25 views

Macbook Air - No Apple logo but still boots

I have been looking all day for an answer to this so I thought I would pick your brains :) Macbook Air 4,1 (Mid 2011) 11 inch, i5, 2gb RAM. After pressing the power button, I hear the Apple "chime". ...
1
vote
1answer
73 views

13'' MacBook Pro 2010 stuck at blank gray screen, no boot option working

My 13'' MacBook Pro 2010 running Yosemite suddenly stopped booting today. After I press the power button, I can hear the chime and the computer proceed to go to a blank gray screen immediately. The ...
0
votes
1answer
77 views

macbook pro encounters prohibited sign while booting with USB

My macbookpro is completely empty and the only option that I have is just internet recovery. I downloaded el capitan and with help of the terminal in the internet recovery build a bootable OSX el ...
0
votes
1answer
36 views

iMac mid 2011 grey screen

On a site I have come along a pretty cheap 27" mid 2011 iMac. The seller says it's broken and when he press the power button it shows a white/grey screen and the "startup sound" plays. Is there any ...
0
votes
0answers
88 views

Winclone to volume not bootable

I'm trying to move my Windows 10 Boot Camp partition to an external drive. The ideal way seems to be with Winclone, however I've been unsuccessful so far. Winclone appears to clone the partition to ...
5
votes
4answers
6k views

How can I get my 3rd party SSD to boot El Capitan?

I have a Mid 2012 13 inch MacBook Pro that's been running successfully with a hybrid drive (3rd party) for the last few years. Recently, the operating system crashed and the hard drive is no longer ...
2
votes
4answers
24k views

MacBook Pro refuses to boot/recover, hangs at “white screen”

I am somewhat new to caring for Macs, but one has been left in my care and I have not been able to restore it to working order yet. Here are the symptoms: The MacBook Pro would hang with a "white ...
0
votes
0answers
86 views

Mac Pro 1.1 stuck on grey screen

After Software update to 10.11.4 form 10.11.3 on my Mac Pro 2006 I can not boot up from any media, like DVD, USB memory, Network, you name it, and can see only a grey screen. I have now GeForce GT7300 ...
0
votes
1answer
101 views

My Mac would turn on but it would get stuck on the white screen upon startup after chime

My Mac would turn on but it would get stuck on the white screen upon startup after chime. I have OS X 10.7.5 Tried many things unsuccessfully like: Command-R Boot to OS X Recovery Mode ...
1
vote
2answers
76 views

Prohibited sign - Can't boot after trying to open Raspian SD Card

So I was following this tutorial https://www.youtube.com/watch?v=Eo4HphBdR10 and opened the folder of the SD Card. The Screen went black and I rebooted. Now I get a Prohibited Sign on boot up. In ...
3
votes
1answer
223 views

Dual Boot Mavericks + El Capitan

I was using El Capitan without issues till now. I'm starting to use Pro Tools 10 which is incompatible with El Capitan, so I will need to install a previous OS X version like Mavericks to make it ...
1
vote
1answer
76 views

MacBook Pro Boots only with a pressed key

I'm having a bizarre issue with my early 2011 Macbook 15'. I grabbed it today without battery power só the first thing I diz was to plug the MagSafe adapter. Afterwards I pressed the power button. It ...
1
vote
1answer
26 views

iMac won't open user accounts!

I have a newer (2009 I believe) iMac, running Yosemite. It powers on, the Apple logo and progress bar appear, as well as the mouse cursor, but then nothing happens, the screen just stays on and ...
0
votes
2answers
56 views

MacBook Pro not booting from hard drive

I got a MacBook Pro that has a problem booting, or even seeing the hard drive. I have used the recovery console to install OS X onto a USB drive and have booted into that and can't actually see the ...
2
votes
1answer
1k views

Accidently deleted some small sized partitions when installing WIndows(Bootcamp). OSX Partition wont boot

I tried to install Windows 8 into my Mac via Bootcamp. I booted into the Windows 8 Installer and had issues formatting the drive that I partitioned for the OS. Like an idiot, I deleted all of the ...
1
vote
3answers
10k views

Why would my iPhone 6 be stuck in a dead battery boot loop?

Okay, so I have a problem. My iPhone 6 died (it runs a non-jailbroken version of iOS, I used it as a test device for development applications, but I didn't do anything crazy with the firmware of the ...