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

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3answers
4k views

Fix slow startup after utility disk repair on a SSD

I have a 250Gb Samsung SSD 840 series with Trim support enabled installed on a mid-2009 13" Macbook pro running Snow Leopard (10.6.8, 2.26GHz, 8Gb of RAM) and I experience extremely slow startup after ...
0
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1answer
324 views

iPhone 4s stuck at apple logo in boot

My iPhone 4s 64GB was recently updated to iOS7. The battery was completely empty so I had to charge it. However, the iPhone does not boot anymore and it's stuck at the Apple Logo. I went to a ...
0
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1answer
147 views

Mac pro 2,1 boots up but won't restart?

I am very confused with this problem. So I just recently purchased a 8 core 3.0ghz Mac Pro 2,1 and I upgraded the memory with 16gbs of hynix ram, and everything worked great the computer was reading ...
2
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0answers
735 views

How to bless a partition using a custom EFI-boot file with non-conforming directory structures and/or file names?

Is there a guide on how to bless a partition for booting, one that doesn't have the default /System/Library/CoreServices/boot.efi structure? For example, I installed GRUB on the default EFI System ...
1
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0answers
3k views

Booting problem after Mavericks installation: BootCache.playlist: 2 No such file or directory

I have updated my MacBook Air 2011 from the App Store to Mavericks but after the installation it doesn't boot up (spinning grey ball). Safemode or a new installation didn't help and verbose mode ends ...
0
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1answer
154 views

Macbook won't boot

I have a Macbook pro 13" that won't boot up. I searched for solutions online and the issue seemed battery related to me. I opened the back panel of my Mac and took out the RAM and placed it back. ...
0
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1answer
114 views

Mac mini won´t boot up

I have a Mac mini that fell from a desk, my kid was playing aroung and it hit the floor, I picked it up and it stared up but when the Apple logo comes up the little cricle appears and thats it, it ...
4
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1answer
94 views

Possible reasons (other than Open Firmware Password Protection) for not being able to boot into single user mode?

Recently I was attempting to install some new software for a user. I followed these instructions to create a new admin-level account but when I held down cmd+S while booting it still booted into the ...
1
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3answers
612 views

Disk became full, had to force shutdown, now it doesn't boot

Don't know why I didn't get a warning about disk being almost full... It came down to zero free space and I couldn't do anything except force-shutdown it. I booted into Windows, deleted some files ...
2
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1answer
4k views

unable to boot my Mac book after file vault 2 activation

after activation of file vault 2 I am unable to boot my computer, the apple sign turns into a prohibitory sign with a spinning circle beneath it , that spins forever. I really need the data on this ...
2
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0answers
398 views

Windows 7 on Macbook Air 1,1 *without* Boot Camp

I'm trying to install Windows 7 on an early 2008 (1,1) Apple Macbook air, on which OS X is not present. The machine is not able to boot directly the win 7 iso, supposedly because it lacks some support ...
2
votes
4answers
2k views

Does not boot (endless spinning)

A friend of mine has forgot her password to a newly bought Macbook Pro, Lion. I've reset the password like described here by booting to single-user mode and deleting /var/db/.AppleSetupDone The Mac ...
1
vote
1answer
262 views

Boot menu not working

So basically I can't boot from my ssd anymore. It just shows a grey screen with an error symbol. I can't get into target disk mode and none of the other boot shortcuts seem to be working either. When ...
0
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0answers
1k views

Mavericks - Restore Damaged Recovery HD Partition without Reinstalling OS X

Recently, I tried to boot into the Recovery HD partition in order to perform some basic verify/repair operations using Disk Utility, only to find that my Recovery HD partition will not boot. Instead, ...
0
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1answer
211 views

If I mess up the EFI System Partition, will Mac OS X be unbootable?

I forgot to make a backup of my EFI System Partition (ESP) and have installed grub onto it. If I happen to accidentally mess up the partition, will OS X be bootable? If not, how would I restore the ...
2
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0answers
158 views

Startup Screen Flashes Pink

During boot, I see the gray screen with the Apple logo, then the entire screen flashes pink for a couple seconds before boot continues normally. Is this a problem/symptom of something? MacBook Pro ...
4
votes
1answer
1k views

Trapped: MacBook always shuts down during EFI SMC Update 1.8. Can't boot. How to remove updater from boot routine?

MacBook Pro i7 Mid-2012 (MacBookPro9,2) running Mac OS X 10.8.5: Downloaded the "offered" EFI SMC Update 1.8 through the AppStore Updates. MacBook restarted, grey progress bar appears w/ spinning ...
1
vote
1answer
178 views

Force a read-only mount of startup disk

I want to create a MacOS recovery startup disk on a USB flash drive. In order to maintain the integrity of the drive's contents (and, perhaps more importantly, reduce write wear on the flash drive ...
2
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1answer
2k views
1
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1answer
160 views

Boot straight to an Application when Mac is turned on

I have a client who wants to use Mac OS X and a Mac Mini to sell a software solution to end users that ALWAYS boots straight to an application when the Mac is turned on. They can't access the login ...
1
vote
1answer
341 views

Strange Freeze on My MacBook Pro 15.4" 2.0GHZ (A1150 / MA600LL) & No Sound After Boot

I have a MacBook Pro 15" A1150 (MA600LL) that will not boot except in safe mode. It gets almost all of the way through the boot then freezes with two vertical checkerboard lines and the ...
2
votes
1answer
232 views

Changed the mod for ~/.. directory by mistake, made it 744, can't boot anymore

I ran the following command by mistake: sudo chmod 744 ~/.. and I can't boot my macbook anymore, it freezes with the brown screen and ajax-style spin. What should I do to make it work normally ...
0
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0answers
404 views

After upgrade Lion to Mavericks, can't run Windows 7 on boot camp because is hidden/disabled

The question is about iMac (21.5-inch, Mid 2011) It was with Lion, there was a Windows 7 (32bit) partition created by Boot Camp v4. So, I made the upgrade to Mavericks (no clean install), after this ...
0
votes
1answer
103 views

Debian won't book on MacBook Pro

I erased the entire content of my MacBook Pro when installing debian. Now, the laptop will not boot into Linux. When I insert USB again it will start installation again. I even selected bootable ...
1
vote
2answers
9k views

Dual booting Yosemite/Mavericks: Stuck in Yosemite with an 'Install OS X' volume instead [closed]

I've made a partition on my hard drive, so I currently have Macintosh HD (call it 1) and Macintosh HD 2 (call it 2). I downloaded the Yosemite installer with my Mavericks install on 1, then ran it ...
2
votes
1answer
2k views

nvram boot-args to boot in target disk mode

I'd like a Mac to always boot in target disk mode. Similarly to setting sudo nvram boot-args="-v" which boots in verbose mode, I tried sudo nvram boot-args="-t" but to no avail. Any idea?
1
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1answer
1k views

Problem Installing Lion on MacBook2,1 using USB

I have a Macbook2,1 with 4GB RAM, Intel Core 2 Duo 2GHz and Leopard 10.5.8 and I need to upgrade it to Lion. I've downloaded Lion installation dmg file and restored it to a USB disk using Disk ...
3
votes
1answer
844 views

iMac will not boot

An office iMac will not boot - it sits at the gray startup screen with the progress circle spinning continuously. I have tried: Booting in safe mode (same result) Booting in recovery mode (same ...
0
votes
2answers
2k views

Apple infinite load. I/O error and even a new HD

My mac mini from the 2011 refused to boot. Apple logo and loading image forever.. I tried cmd+s: Went through all the steps from the applejack, tried fsck -fy, all semmed pok, Tried cmd+v: It ...
-1
votes
1answer
95 views

Problem with bootable usb drives

So I have just created a windows 8 bootable drive using the tutorial at http://bleeptobleep.blogspot.fr/2013/02/mac-install-windows-7-or-8-on-external.html?m=1 But when I held down the option key at ...
0
votes
1answer
46 views

rEFIt defaulting to 32bit kernel

rEFIt is defaulting to the 32bit kernel of OS X which will not boot and will show this error message: at boot I have to press F2 then manually select the 64bit kernel. How do I change the default ...
0
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2answers
39 views

How old would a Macbook Pro need to be in order to have a non-64bit Intel processor?

My friend has a MBP that was bought 2 or 3 years ago, and I need to help him prepare some software to run. What are the chances he won't be able to boot from a 64bit Linux live USB flash drive?
1
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0answers
2k views

iMac 27″ boots successfully to safe mode only

I can only boot my iMac 27″ (end of 2009) in safe mode. The problem started in Lion, when the computer suddenly froze. All I can get is the grey screen, which turns black after a while. I upgraded ...
1
vote
1answer
324 views

Why the launchd has multiple instances per user (not only me and root, but also _spotlight and _windowserver)?

I found that the launchd process has multiple instances in the process list. What is looking interesting is that there are four users under which these launchd processes are running: root < ...
0
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2answers
5k views

Is it possible to make a bootable USB stick for a Macbook Pro to do firmware update?

I know there are some possible duplicates. But the questions are not solved. Such as: Copy Crucial SSD Firmware Update ISO to Bootable USB I am trying to upgrade the firmware of my SSD (crucial m500) ...
6
votes
3answers
9k views

How do you install and use a Linux partition on Mavericks?

As a just-for-fun type of experiment, I was wanting to install Linux on an external drive that I own and boot it up on my 2007 iMac desktop. I know there are a plethora of guides out there on how to ...
1
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0answers
163 views

MacBook pro boot's to wrong OS after waking up from Safe Sleep

I am dual booting Ubuntu and OS X Mavericks on my MacBook pro 9,2. I am using the rEFInd boot manager, since I was told that I should use it to dual boot OS X and Linux (I could have used rEFIt, but ...
0
votes
1answer
489 views

USB Boot iMac 4,1

I have a Fat32 USB that I would like to boot on my iMac 4,1. The Mac does not recognize the device from the boot menu (option key on boot) and I have tried the Plop disk but it freezes when it says ...
1
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1answer
3k views

MacBook Pro won't boot, or boots slowly

I have a MacBookPro OS X 10.7.5 from 2011. When trying to boot it has a slow startup or login, with numerious spinning wheels. Sometimes after a long time I can sign into the computer and sometimes it ...
3
votes
2answers
652 views

Add Static ARP Entry at Boot

I'm new to Mac OS X. On Linux I'd: append to /etc/rc.local arp -i eth0 -s 192.168.1.1 00:00:00:00:00:00 I've figured out how to do it in Terminal: sudo arp -s 192.168.1.1 00:00:00:00:00:00 But ...
2
votes
2answers
8k views

How can I boot my dual-booted Mac back to OS X?

I have a MacBook Pro and run Windows XP on it too much however I cannot remember how I can open the MacBook Pro with OS X on instead of Windows XP. How can I boot back to OS X?
1
vote
1answer
467 views

Boot from CD, make backup, reinstall snow leopard. Good idea?

My iMac has some problems, and to repair it I thought I'd do as it says in the title. Currently, I'm running (a broken) Snow Leopard, and ideally I'd make a backup (with Time Machine) before I erase ...
0
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3answers
93 views

How to copy my Mountain Lion system to another drive?

I'm considering upgrading at long last to Mavericks, but need to feel confident that all my apps & workflows will work properly before committing 100%. I boot off of an external Thunderbolt SSD ...
2
votes
2answers
226 views

Suppress load screen when using rEFIt?

I have rEFIt installed. Is there any way to choose a default OS to launch which would in turn suppress the load screen from showing up when you start up the computer? I'm looking for a way to make ...
0
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1answer
118 views

How to create a bootable Mavericks dvd (double layer)?

my macbook's hard-drive is dead so i bought a new one and i'm looking for a way to install os X on it. Is it possible to download mavericks on an imac running 10.6.8 and create a bootable dvd ? ...
0
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1answer
181 views

How to turn off boot up chime on late 2013 mac pro?

I use my new late 2013 Mac Pro in Windows only. But, I'd like to disable the bootup chime. How can I do this?
2
votes
1answer
629 views

Verbose mode startup

I've been having sporadic issues where my Macbook Pro Retina hangs at startup. I started up in verbose mode and it always hangs at this message. AppleUSBMultitouchDriver::checkStatus - received ...
2
votes
1answer
9k views

Install Mavericks from usb drive on new HDD

I replaced my old HDD with a new one. Also I created a bootable usb flash (8GB Toshiba) with Mavericks using DiskMaker X. I restared Mac and pressed Option key, but I see no option to boot from. I ...
1
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0answers
2k views

iPhone won't charge anymore in infinite boot-loop [closed]

NOTE: I know this is a lot of text to handle, but I'll add a bounty whenever I can to the person who can bring me the solution. So see is as a motivation to read the whole text :) My friend has the ...
9
votes
4answers
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 ...