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

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1answer
2k views

Login - Screen Flashes and Returns to Login Screen - Tried Everything Possible

I have an absurd issue which pretty much nothing seems to be able to fix - I have a 2011 Macbook Pro running Mavericks. When I try logging into my main account with the correct password, the wheel ...
2
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0answers
137 views

Installing Mavericks on USB pen to run on Windows PCs [closed]

How can I install Apple's Mavericks on a pen drive, that I can then plug into a windows machine and boot from it? I did that some years ago with 10.6: I installed it on a 16Gb pen drive and then I ...
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0answers
467 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 ...
0
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1answer
74 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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1answer
91 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 ...
3
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1answer
8k views

Can I boot Mac from an external hard drive (internal hard drive+hard drive closure)

Model: Macbook Pro 2010 mid OS: OS X 10.9 Hard Drive: WD5000BPKT 500GB For some reason I need to change my perfectly working internal bootable drive to external bootable drive. I took out my ...
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0answers
275 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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2answers
7k views

OS X Snow Leopard - Can't boot from HD, Target Mode or CD

Today my computer started getting really slow and freezing alot, so i rebooted. HOwever it won't boot up again, keeps getting stuck on the grey screen. Here's what i've tried: Startup in safe mode ...
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2answers
21k views

What are next steps when fsck reports “could not be repaired after 3 attempts”?

My Mac Book Pro 13.-" doesn´t get past the grey booting screen with the apple and the spinning wheel (The loading bar appears but when it´s done nothing happens) I have 220 GB in one single ...
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3answers
648 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
460 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
430 views

MacBook Pro Lion crashes after a progress bar boot

Basically my MBP started giving me messages (out of nowhere) about how my Memory was too low and that I needed to shut down a few programs before continuing. In the end I was left with only Finder ...
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2answers
242 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
138 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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1answer
461 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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2answers
4k views

Macbook pro boot with kernel panic - can't perform kext scan

I was trying to swap command and option key for my external keyboard following the instruction in http://hints.macworld.com/article.php?story=20110529094802391. When I'm done with change and I ...
0
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1answer
407 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
98 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
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1answer
516 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 ...
1
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2answers
6k views

Macbookpro can't recognize bootable usb at boot time?

I have an old macbookpro: Model Name: MacBook Pro Model Identifier: MacBookPro6,2 Processor Name: Intel Core i5 Processor Speed: 2.53 GHz Boot ROM Version: MBP61.0057.B0F I created a ...
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2answers
418 views

Trouble with Memtest86 4.0a on 15" MacBook Pro

I have a 15" MacBook Pro late 2011 (MacBookPro8,2) It has a 2.4Ghz Core i7 CPU and 4GB of stock RAM. I'm trying to run Memtest86 4.0a from boot (Memtest86+ does not work.) After about 5 seconds into ...
2
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1answer
41 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 ...
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2answers
232 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 ...
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2answers
433 views

Notification area icons are sometimes invisible in Windows 7 (Boot Camp)

For some reason, sometimes my notification area icons are invisible in Windows 7 64-bit (Boot Camp, on an iMac mid-2010), as seen in this screenshot. Clicking on an invisible item does nothing. ...
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1answer
8k 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 ...
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0answers
201 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 ...
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1answer
101 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 ...
0
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1answer
160 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
172 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
236 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 ...
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4answers
3k 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, ...
0
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1answer
87 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
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1answer
6k 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 ...
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1answer
205 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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1answer
367 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
110 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? ...
17
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2answers
37k views

How do I set OS X to boot by default?

I set Windows 7 to my Boot Camp. Windows 7 starts now by default in the normal boot. However, I want that OSX boots by default and Windows 7 only as I press ALT and then select it. How can you set ...
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0answers
5k 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 ...
2
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0answers
2k views

MacBook does not list my bootable USB stick in the boot menu

I made a bootable usb stick with OSX Lion. When starting up my MacMini (which has OSX Mountain Lion installed) while holding option, the USB stick is listed and I can boot from it. But I want to use ...
2
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0answers
681 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 ...
6
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4answers
14k views

Can you boot a MacBook Air from a USB 3 external hard drive?

Macs have long been able to boot from external FireWire hard drives. I don’t think they’ve been able to boot from external USB 2 drives though. The new MacBook Air (2012) has USB 3.0. Can it boot ...
5
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1answer
4k views

Is blessing the Ubuntu partition reversible in OS X?

I'm considering using Ubuntu as a main OS. So far, I've been using it in a dual boot setup with OS X. The dual boot worked by holding the ⌥ alt key upon boot (not rEFIt). Blessing the Ubuntu ...
4
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1answer
1k views

Macbook Pro Early 2011 15 inch, Mountain Lion Booting issue

My Macbook Pro is not booting normally. I tried many options but no success. If I try to recovery mode or try to boot from USB, a blue screen appears. So I can't do fresh install. I checked hardware ...
4
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1answer
564 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
166 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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0answers
447 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 ...
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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
258 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?
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1answer
809 views

Can I “restore” an iso image to my hdd to be bootable?

I removed my superdrive a while back but now I want to install a linux partition on my macbook. I installed rEFInd as my boot manager but now I need to boot into the arch linux iso. Normally I would ...