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

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2
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0answers
2k views

iPad 1 won't boot, flashes apple logo

I have recently acquired a refurbished iPad 1 WiFi + 3G. Straight out of the box it wouldn't boot up at all. No logo, or anything. Upon plugging the device into the AC power charger, the Apple logo ...
2
votes
2answers
18k 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 ...
2
votes
3answers
2k views

iMac won't boot off of Mavericks USB when downgrading from Yosemite

I made the biggest mistake of my adult life and installed Yosemite without backing up my HDD. Fortunately, I do have most of my actual files and programs saved to my external HDD, but that leads to ...
1
vote
1answer
184 views

No Partition to install Yosemite to

I wanted to have a clean Yosemite installation. Therefor I deleted the existing partition to make sure a completely clean installation is made. The problem is that I cannot choose the partition to ...
0
votes
0answers
62 views

External disk boots installation system, but not installed OS

I have an external NewerTech Voyager Q, connected with Firewire. In it I have my old internal HD. I used to have OS X Snow Leopard on it, so it's correctly formatted and bootable but it would never ...
0
votes
2answers
3k 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 ...
0
votes
0answers
121 views

MacBook Pro wont boot: Stuck on Grey Screen

So, I've done all the typical checks, including putting the Macbook in target disk mode and wiping and resinstalling OS via my other computer. I know the drive is functioning - I can boot my desktop ...
1
vote
1answer
687 views

How to run OS X from DVD or USB stick?

I would like to have a safe "Linux-like start/boot from DVD or USB stick" environment. How to do such security thing for the latest OS X (10.9 Mavericks)?
0
votes
1answer
558 views

Problem booting Ubuntu from newer Macbook Pro (late 2011 model)

I'm trying to create a USB stick that is bootable on both PC and Intel Mac systems, which will contain a full installation of Ubuntu (i.e. not just a LiveCD). I've succeeded in creating a USB that ...
1
vote
4answers
3k views

Gray screen immediately upon boot. Cannot enter into safe mode, and cannot show boot loader with the Alt key.

How the problem came to be: I wanted to dual boot Debian on my MacBook Pro 8,1. I got my USB ready, downloaded ISO, and installed rEFInd. I restarted to make sure the new boot manager worked. It ...
1
vote
0answers
107 views

Unable to boot into ElementaryOS on MacBook after PRAM reset

I installed ElementaryOS on a separate partition of my HDD. Not sure what happened but the audio in OSX stopped working after the installation. After trying everything else, I found resetting the ...
3
votes
0answers
60k views

Freeze on boot after installing Yosemite

Sorry for the writing style but I am typing from my smartphone now. My MacBook pro on Mavericks worked like a charm but crazy as I am I decided to install Yosemite without any backup as I am lacking ...
0
votes
1answer
5k views

Fixing a Windows partition boot using OS X tools

I've got a triple boot system on my Early 2013 Mac Book Pro: OS X, Windows 7 and Ubuntu. I'm using rEFInd as my boot manager. My Windows install boots using legacy BIOS boot, and OS X and Ubuntu boot ...
0
votes
0answers
101 views

Brand new Macbook Pro no longer working — can't reinstall, can't boot into recovery

Just got a brand new macbook pro w/ retina for my gf about 2 weeks ago. She's been on the laptop about 4-5 times. The last time she tried getting on it, she kept logging in and getting to a screen ...
0
votes
1answer
43 views

Clock problems with dual boot mac system:- 10.6 and 10.8

I have a dual boot mac pro 3,1 : one hard drive with Snow Leopard (10.6.8) and one with Mountain Lion (10.8.?). When I boot up with Mountain Lion it unfailingly resets the clock to about 4 am. This ...
1
vote
3answers
1k views

New hard drive not recognized

I swapped the original 80 GB hard drive for a new 640 GB Samsung HM64JI hard drive. It is not recognized after booting from the 10.5 Installation DVD on Macbook 2.1 with recent EFI updates installed. ...
1
vote
1answer
103 views

what does it mean if my macbook loaded in safe mode?

My MacBook just booted in safe mode. Is it possible that somehow I made it to do so, or can it automatically load in case of a malfunctioning? What does it mean if it did so automatically?
0
votes
1answer
273 views

Cannot repair disk0s2 with mavericks utility disk on a SSD

I was trying to repair a corrupted partition (OSX Mavericks) the mac doesn't boot anymore (grey apple logo with infinty spinning gear). I've just tried with safe mode, PRAM restor etc... And the ...
2
votes
4answers
10k views

MacBook Pro not booting after update to Mavericks

I installed Mavericks (upgrading from Mountain Lion) on my MacBook Pro (from early 2011) and the install seemed to go fine. However, this morning while I was working on PowerPoint, it switched off ...
1
vote
0answers
34 views

How to use an external disk to boot to Windows?

I want to be able to boot into windows. I only have 256GB on my Mac, and my current windows C: drive has over 112 GB in it used. So I would like to keep the on-board SDD free for OS X. Is it possible ...
1
vote
2answers
6k views

Constantly ejecting OS X install disc when trying to boot

When trying to boot from the OS X install disc (Snow Leopard) my Macbook will just eject the disc and boot normally from the installed system on the hard drive. Once booted, the disc can be read fine ...
1
vote
0answers
142 views

MacBook Pro does not boot after upgrade problem [closed]

I tried to upgrade my MacBook Pro from Mavericks to Yosemite (Developer Version.) The setup was ok, nothing wrong, but when I tried to install the Preview 8, it stopped responding right in the end of ...
0
votes
2answers
94 views

MacBookPro10,1 had problems booting, now some system images are pink and fuzzy

A friend just recently bought a MacBookPro10,1 (MacBook Pro Retina, 15-inch, Mid 2012) off of craigslist, it all checked out and worked fine until we erased the hard drive and reinstalled Mavericks ...
0
votes
1answer
82 views

Mouse disconnected after booting

Everytime I boot up my iMac (OS X 10.9.3) it doesn't find my mouse. If I unplug the mouse and reconnect it after around 20 seconds, it works. It's an USB mouse. Every other USB device works fine. I ...
0
votes
1answer
169 views

Where does the OS X routing table come from?

Trying to find out where the initial routing configuration for OS X is stored (plist, or wherever), and what happens at startup to read that configuration and configure the network interface(s).
0
votes
1answer
44 views

Flashing Folder on Mac Pro 1,1 after trying to Bootcamp

So I bought a Mac 1,1 and it runs great, until I tried to bootcamp it the other day with an old windows HDD i had. I downloaded windows, and tried to bootcamp it and now it will not boot the Mac HDD, ...
1
vote
0answers
186 views

MacBook won't boot from internal SSD

I got a 2011 MacBook Pro and had a Samsung 840 Pro installed running Mountain Lion, then Mavericks for about a year without any problems. Without any apparent reason the MBP just wouldn't boot from ...
0
votes
1answer
123 views

Macbook Pro 15 progression bar halts then circle spins

We have a Macbook Pro 15 Last 2011. The computer starts to boot, it shows the progression bar, then it disappears and the circle just spins. I have tried safe mode and it just spins. I just ran ...
0
votes
0answers
496 views

Mac alternative boot loader for booting legacy OS from USB

I am trying to install Windows 7 on my MacBook as a dual boot setup. I have a MacBook 7,1 running Mavericks. I have replaced the DVD drive with a SSD (now have 2 internal drives) so cannot use a ...
3
votes
4answers
34k views

How can I disable Safe Boot or the Shift Key?

After a spill on the keyboard of my unibody MBP 17", the ⇧ key reports as always on. Under Windows (BootCamp) and Linux (LiveDVD) I can easily get around the problem by using an external ...
1
vote
0answers
160 views

How to make a bootable (encrypted) copy in an external drive from a FileVault 2 encrypted boot partition

I configured my MacbookPro (Retina) as follows: /dev/disk0 (GUID partition scheme) EFI 200 MiB Apple CoreStorage 128 GiB <- FileVault 2 encrypted Apple Boot 650 MiB <- ...
0
votes
0answers
19 views

Create Mavericks bootable USB under Windows for MacBook Air [duplicate]

After experiments with my macbook air, I have clean hdd drive without any OS on it completely (nor recovery partitions). How can I create bootable usb flash drive to install mavericks back to my ...
-1
votes
1answer
233 views

How can i recreate my Partition Table

What happened: While i was tinkering around with my bootcamp partition something went terribly wrong. end of story is, i have no partitions left in my partition table The current situation: i can ...
0
votes
0answers
87 views

Used DiskMaker to create bootable USB, got error 10600, USB won't mount

I tried creating a bootable USB for Mavericks. Downloaded and used DiskMaker X. Got an error, -10660, and the app closed. Now my Mac won't mount (or recognize) the USB drive. It doesn't show up in ...
2
votes
1answer
11k views

No bootable device - insert boot disk and press any key

When I boot my Macbook Pro 13" Retina (running newest Mavericks), it is showing me this error: However! If I boot holding the ⌥ alt-key, it shows Mavericks as option. When I press ⌤ enter-key to ...
44
votes
2answers
137k views

Creating A Bootable USB Of Windows 8.1 On OS X?

Reasons for wanting create such a usb include: PC is unbootable and you want to prepare a bootable USB using the ISO file that you have on your external hard drive. to install Windows 8.1 on Mac ...
6
votes
1answer
10k views

Stuck in a boot loop after failed update to Mavericks, can't reformat HDD

I recently tried to upgrade a 2008 Mac Pro from Snow Leopard (10.6.8) to Mavericks (10.9.2) using the free upgrade available in the App Store. The upgrade seemed to go without a hitch until the ...
-2
votes
1answer
98 views

Boot off of USB drive problem - new iMac

how can i boot off of usb disk to install snow leopard onto new iMac that has mavericks installed
0
votes
2answers
8k views

How to create a 10.6.8 recovery CD (not clone of the OS or install environment)

Upon Google searching people seem to equate "recovery CD" with full installation. I have seen methods such as using Disk Utility with the Mac HD as the source and a DVD as the destination. This ...
0
votes
1answer
130 views

Why doesn't my MacBook recognize the original HD any longer?

I replaced the stock hd with a samsung ssd (840) about 18 months ago. It died last week. I tried putting the original HD back in and the computer won't recognize it. Even when I hold down the option ...
0
votes
1answer
82 views

My mac would not boot so I formatted the drive and now it has no OS

So there is a whole other backstory as to why my computer would not boot and why I needed to format the drive. The only thing I need to know is how can I install an OS to my computer. I tried CMD-R, ...
3
votes
0answers
217 views

Modify SATA link speed down (Mac won’t boot)

I have a MacBook Pro (Early 2011, MacBookPro8,2) which I cannot reboot, otherwise I have to reinstall Mavericks every time. Sleep mode works, luckily, but sometimes I need to reboot. In April my HDD ...
1
vote
3answers
3k 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
votes
1answer
304 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
votes
1answer
103 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
votes
0answers
565 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
vote
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
votes
1answer
146 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
votes
1answer
99 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
votes
1answer
76 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 ...