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

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342 views

Compressed windows boot manager on dual boot Macbook and windows 7

I have never posted here before so I hope this is the right place to ask this question. So I'm helping my friend with his computer right now, I should mention that I am not a user of OS X on a ...
1
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1answer
542 views

Unable to boot from USB Mac

I am running OS X 10.9.2 on a late 2011 Macbook Pro. I created a Windows 7 install usb using bootcamp successfully but the startup screen is not recognizing the usb on reboot. Please help. Note: I ...
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1answer
49 views

PowerBook G4 cannot boot up and doesn't install any versions

My school IT guy tried helping me with an issue with my old PowerBook G4. I just got it from my friend because he had no use for it and he didn't know the password. I tried resetting the password and ...
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0answers
145 views

Efi Boot appears on BootCamp page

I'm new in this forum and I hope someone has an answer for my issue. Since yesterday my mac-book pro won't boot in Os X I have boot-camp on it If I turn on normally the apple logo, loading circle ...
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1answer
66 views

Mid 2010 Macbook Pro goes into an unresponsive hibernate state for unpredictable amounts of time

When my macbook is in standby, and the battery dies it sometimes goes into an unresponsive state in which (after charging) it won't turn on. The power button has no effect, even in combination with ...
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3answers
441 views

How can I wipe a disk from a Mac with firmware password set?

I'm in a somewhat odd situation: I need to wipe the disk of a MBP, but I can't boot into Recovery Mode/from a CD/etc. as there is a firmware password set. Is there a way to wipe the disk from within ...
1
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1answer
400 views

Reinstall Mac OSX on Ubuntu Macbook

Last year I installed Ubuntu on my 2006 MacBook (Intel), and erased the hard drive with MacOSX 10.5 in the process. Linux was fun, but now I want another Mac to play around with. I've put 10.8's ...
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1answer
262 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 ...
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2answers
174 views

Mac Boot Option not Showing Base System

Whenever i hit ⌥ or ALT when I boot up my Mac only the Boot Option "Mac Hard Drive" shows. "Mac OS X Base System" or "Recovery 10.9.1" doesn't show up. Can someone help me on this? Do i need to make a ...
1
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1answer
124 views

Will a MacBook with its lid closed (asleep) restart at the scheduled time?

I think the title says it mostly. Will a sleeping MacBook Air with the lid closed restart automatically at the time scheduled in the energy saver pane?
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3answers
6k views

Boot hangs on grey screen (even when booting from USB drive with fresh OS X install)

My MacBook Pro 15" Late 2011 (MacBookPro8,2) with AMD Radeon 6770M exhibited display corruption and associated system crashes/resets over a period of two weeks before it entirely failed to boot. The ...
1
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1answer
393 views

How Can I access Mac OS X Base System on Boot Screen?

Im going to try to wipe out my hard drive and reinstall Mavericks but whenever i reboot the iMac and hit the OPTION key it won't show Mac OS X Base System. Can anyone help me on this?
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1answer
287 views

iMac is stuck in a login loop

My iMac is stuck in a login bootloop. After entering the password, I see a white screen for a second and then I am thrown back to the login screen again. I tried the same in safe mode, and it behaves ...
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0answers
83 views

Mac not booting. Attempts for SU mode and recovery lead to black screen

My macbook pro was not booting. The screen seems to freeze on the Apple logo screen. Any attempts to enter the SU mode or to recover either from local or from Internet lead to a black screen. Any ...
2
votes
1answer
331 views

Can only boot to Windows 7, no OS

Back in late 2010, when I first got my MacBook Air, I followed the instructions at http://howto.cnet.com/8301-11310_39-20020513-285/install-win-7-on-macbook-air-from-a-usb-drive/ to install Windows 7 ...
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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, ...
2
votes
1answer
37 views

Macbook boot troubleshooting

Since a system upgrade my macbook fails to boot properly: a loading bar appears, it takes about 15 minutes to get filled and then the system shuts down again. When booting in recovery mode, I tried ...
3
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2answers
496 views

Boot up error prohibitory sign flashing folder with question mark

3 weeks ago my hard drive failed so I bought a new one. (Macbook pro late 2011) 5 days ago, the new one flashed prohibitory sign, flashing folder with question mark. Every once in a while I could get ...
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2answers
170 views

Mac USB Linux boot disk

I have a 13" MacBook Pro early 2011 model. It will not boot from any Linux USB boot disks I have created. I know these disks are working on later models as I have tried with 2012 Retina 15" booting ...
0
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1answer
5k views

How to recover my harddrive if I can't see it in the disk utility

I have a 2007 aluminium iMac which I upgraded months ago to Mavericks. Today it locked up and I held the power button to shut it down and cannot get it to start again. I get the flashing folder ? icon ...
2
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0answers
107 views

Windows not booting off external disc drive

I'm trying to install windows xp on Lion. This is a little bit complicated, but I was using this tutorial. I got to step 6, which is booting from the Windows XP disc. But it says "no bootable medium ...
1
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1answer
91 views

Pendrive bootable not showing after trying to reinstall Mavericks

I did the steps to reinstall OS X Mavericks. I created a bootable Pendrive but it doesn't show when I hold down "Option" at boot. I already erased my HD, so I'm stuck now! How can I reinstall OS X ...
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1answer
111 views

Using startup commands when the default startup disc is not OSX

I have to use a startup command (ie command - S for single user mode) when restarting my computer, but this is proving to be impossible, as the startup disc is windows by default on my computer - ...
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0answers
220 views

Install Ubuntu 13.10 on external firewire hard drive

I think I installed Ubuntu 13.10 on my external firewire hard drive (LaCie Rugged Triple) successfully, but I don't see any way to boot it. How can I solve this? I already have Mac OS X 10.7, Lion, ...
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2answers
2k views

Boot OS X install from one Mac on another Mac

It seems I can't boot a system installed on one MacBook in another MacBook. My laptop needs a few days of servicing, so I thought it would be easiest to clone an image of my OS X install on USB ...
0
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1answer
82 views

Long boot and shutdown time

I own a MBP 17" model with i7, 4GB RAM, 750GB HDD. It is early 2011 model. I upgraded to OS X 10.9 when it was released. Since then the boot and shutdown time has been extended greatly. What used to ...
4
votes
1answer
5k views

How to create USB Ubuntu boot disk in OS X so that it boots on *non-Apple* computer?

While this seems like a straight forward task, the few methods I've tried so far don't create a USB device that my Dell computer will recognize as a valid bootable USB drive. Here's what I've tried ...
2
votes
2answers
2k views

OSX Partition won't mount. Permissions seem wrong

OS X was spinning and spinning when trying to shutdown so I held down the the ⌽ Power button to force shutdown. Current Situation: I cannot boot to OS X directly, I first have to boot to single ...
0
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1answer
120 views

Cannot boot Mac Mini with stripped RAID -fsck hangs

Today we coould not get one of our machines running. After several hours of doing the 'standard' tasks like fixing permissions etc. we hit a dead end. Here's what's going on: Machine starts, we can ...
1
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1answer
148 views

MacBook will read USB drives with no problem, but will not see the USB drive as boot drive

I am trying to install OS X Lion on a Macbook 4,1 which I've upgraded to 4 GB of RAM. It should support this OS, however I cannot get my Mac to see the USB drive as a bootable option. It's a SANDISK ...
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votes
1answer
359 views

How can OS X be installed from ISO file on a Mac?

How can OS X be installed from an ISO file on a Mac? I have downloaded OS X Mountain Lion ISO file (4.42GB) as my MacBook fails to boot and I want to do a fresh installation.
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0answers
920 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 ...
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0answers
92 views

How to restore /dev/rdisk1?

Accidentally when installing third-party distribution on to the stick I mixed up paths and instead of /dev/rdisk2 used /dev/rdisk1 and now my OS X do not load. Is it possible somehow to restore boot? ...
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2answers
3k 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) ...
0
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0answers
4k views

OS X kernel panic on boot with “unable to find driver for this platform”

I updated the latest version of OS X yesterday. When I updated this it asked me to restart and displayed "unexpected error" and asked to restart again. When I restarted it the following screen showed ...
4
votes
4answers
2k views

MBP boots only through single user mode

After using my MBP and shutting it down as usual, it fails to boot. If no keys are pressed during booting ( normal boot ), a progress bar will appear on the bottom side of the screen, moves slowly, ...
2
votes
0answers
634 views

Locked Hard Drive

For some reason a recent reboot resulted in a startup screen with a circle with a slash icon instead of the regular Apple icon. What I tried: Using internet Recovery I used disk utility to fix ...
4
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1answer
503 views

Apple recovery partition possibly creating problems in Ubuntu

Before reading, it may help to know I have a 13" Macbook Pro (model 7,1. Mid-2010). Recently, the HFS+ filesystem on my OSX became corrupt and after many trials and errors, it was clear I was going ...
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0answers
133 views

Mid-2012 Macbook Air, boot directly from MBR not from GPT

Ok, I have an end-goal of using rEFInd, windows, and linux installed on my macbook air. (info here: http://support.apple.com/kb/SP670 ) Windows cannot be installed onto a GPT partition, so I'll have ...
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1answer
51 views

Can I temporarly disable automatic login while booting?

Is there a key to press in order to disable automatic login for that single boot? I do not want to disable automatic login entirely, I wonder if there is a key combination that, if you keep it ...
1
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0answers
386 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 ...
0
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0answers
1k views

Boot from USB iBook G4 Power PC

I recently got an old iBook G4 (as many of you might have noticed with all of my recent questions :D) and I wanted to install Ubuntu via USB (the iso doesn't fit on a CD and the iBook doesn't read ...
0
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2answers
250 views

Newly-upgraded Mavericks machine hangs on startup

I just upgraded to Mavericks on my 2.8 quad desktop, and now it won't fully boot. It gets to the Apple logo, then hangs. I tried safe boot but got the same result. Where to next?
2
votes
2answers
246 views

My MBP will not startup properly!

I have a Macbook Pro 2008 aluminum 15-inch that runs on OSX snow leopard. Whenever I turn on my laptop, it boots up (apple logo and spinning wheel appears), and then goes into a loop of blue screens. ...
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0answers
42 views

iPhone 4 doesn't power on, but is recognised by PC

My fiancée's iPhone 4 doesn't seem to want to boot. I originally thought it was just not charging, but my PC recognises it when I plug it in via USB. Might just be that the USB logic (e.g. FTDI) ...
1
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1answer
2k views

Partition corruption, still can see files in single user mode, would like to retrieve files

The problem started after forcing the mac to shutdown. Since then, when trying to boot, it stays stuck at the grey apple with spinning wheel. I've tried a few generic things to be able to access my ...
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0answers
259 views

How can I clear the kernel extension caches while using FileVault 2?

I have the same problem as this user, Air + Lion : plug in USB, keyboard/pad stop working , where the built-in keyboard and trackpad on my MacBook Pro stop working (and drop out of the USB devices ...
1
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1answer
75 views

Start a process at boot

I need dnsmasq to run at boot on Mavericks. I've got dnsmasq working fine. I've created a .plist file in /Library/LaunchDaemons with the following contents: <?xml version="1.0" ...
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0answers
142 views

WD My Book for Mac External HD won't boot any more

I bought a 3T WD My Book for Mac external HD and use it with my iMac with OSX 10.8.5. I partitioned it into 5 partitions. There are three 30G partitions and two larger ones. The largest is used as a ...
0
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0answers
227 views

Why doesn't the boot menu show my USB drive with the Mavericks installer?

I have downloaded Mavericks and through Disk Utility installed it to a USB drive. When I boot my new Mac, I only see the Recovery drive. Don't have the original Macintosh HD and doesn't find the USB ...