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
375 views

Unable to boot into anything but single user mode

Last night I upgraded from Mountain Lion to Mavericks (mid 2009 macbook pro). Everything went smoothly during the upgrade, but it resulted in an extremely long and unstable boot process. If I was ...
2
votes
1answer
278 views

USB Drive with Mountain Lion Boot-Up Problem

I've tried a few ways to restore the Mountain Lion InstallESD.dmg to a USB hard drive to reinstall on my Mac Mini. I've used Disk Utility Restore, Lion Disk Maker and Carbon Copy Cloner. Each method ...
2
votes
1answer
600 views

CoreStorageFamily::unlockVEKs() failed to unwrap the vek, status = e00002bc

I have a filevault2 disk with two partition. One is the boot partition, the other contains data, both are encrypted. Today, after installing the latest 10.8 update (10.8.4 I guess), the computer ...
2
votes
0answers
125 views

Boot Linux from USB drive

I've installed Fedora on a new SATA SSD drive for my MacBook Pro, and when installed into the laptop, it boots perfectly (and runs wonderfully!). However, I want to boot from it externally until I'm ...
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
votes
1answer
226 views

FreeBSD Install DVD corrupted my Mac OS X harddisk

Recently, I have tried a FreeBSD 7.4 i386 Install DVD, just to see some screens of FreeBSD on my Mac mini Intel 2006. I was going to see (to remember) just several dialog screen of and perhaps I would ...
2
votes
0answers
260 views

How to 'startx' from Single User Mode?

I usually run dwm inside Xquartz on OS X Mountain Lion 10.8. But is there a way to boot into Safe Mode (or a console), then startx or xinit, skipping Aqua? I'd like to boot directly into X11.
2
votes
1answer
2k views

MacBook Pro running OS X lion stuck on boot screen

My MacBook is stuck on the boot screen like this: I have tried multiple things such as launching it in safe mode and pressing some buttons as soon as the computer boot logo shows up.
2
votes
2answers
1k views

2008 MacBook Pro Blinking Folder icon

I have a friend with a ~2008 MBPro which has seemingly hit the hay. I'm not 100% it's 2008, but I think so. It has magnetic power cord--the square one. Anyway, as soon as it turns on, there is the ...
2
votes
0answers
384 views

Windows will not boot after a restart of my Mac Pro, only after a cold shutdown and startup

I am currently experiencing a very strange issue regarding booting into Windows 7 64-bit (installed on its own 1TB HDD). If I restart my Mac Pro, hold down the option key, and select my Windows ...
1
vote
2answers
116 views

Are “Extensions” something that disappeared many Mac OS versions ago?

On a sheet of Mac keyboard shortcuts for booting, one of them says, "hold down shift while booting and the computer will not load login items or extensions". Am I wrong, or are Mac OS "extensions" ...
1
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2answers
2k views

Mac OS: Some apps (mostly java) are very slow at first loading

System: Macbook Pro Duo 2.4Ghz, 4GB, Snow Leopard I first encountered this problem when running eclipse. When I first run it after every reboot or waking up, it painfully takes > 7 min to load. The ...
1
vote
3answers
993 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
899 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 ...
1
vote
2answers
33k views

Stuck at Apple logo during boot. Cannot enter Safe mode. Cannot use Recovery USB

A little background I wanted to create a Mountain Lion recovery USB because I currently only have a Lion recovery USB. While downloading the installer image from the Mac App store, the computer froze ...
1
vote
2answers
3k views

Macbook Pro boots successfully when using hard drive in USB enclosure but doesn't boot when connected internally

Apologies for the long question. I will keep it as simple as I can. Last week my Macbook Pro (13-inch, Mid 2010) started to act strange. It started when I tried to open Skype and received an error ...
1
vote
1answer
5k views

What does boot.efi actually do?

I understand that when a Mac's EFI system runs, it locates the file boot.efi in the /System/Library/CoreServices/ (blessed) directory and runs this as an EFI application (subverting a large part of ...
1
vote
2answers
4k views

Can I use 16 GB RAM with my MacBook Pro 7,1?

I just picked up 16GB of RAM for my MacBook Pro, running the newest OS X. According to the NewEgg reviews, it should work in it. However, once I boot up, it shows the Apple logo and, after a few ...
1
vote
1answer
194 views

Do the new macbook pro models (2011) still have a 4 partition limit?

If I remember correctly, the older Macbook pro models (pre 2011) had a 4 partition limit: so, if you tried to install multiple operating systems, you had this limit. Do the new models (2011) still ...
1
vote
2answers
16k views

Mac Pro: Any way to recognize a bootable USB on startup?

I have a Mac Pro 2,1 2x6-Core Xeon@2.66 GHz and am trying to boot from several ISO images written to USB sticks. I have tried the dd-based methods as recommended by Ubuntu, with no luck. In every case ...
1
vote
2answers
612 views

How to remove boot from MacMini?

I have tried installing windows 7 on my MacMini. I followed following steps. Setup went perfectly But while installing I thought of not installing it. So, I just restarted mac mini. Pressed Alt ...
1
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2answers
8k 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 ...
1
vote
3answers
5k views

MacBook Pro can't boot: shows Apple logo then grey screen

There is a MacBook Pro from 2012 with Mountain Lion that won't boot. The Apple logo is showing, the spinning wheel and then it just goes to a solid grey screen. I've tried to hold Cmd+R while ...
1
vote
2answers
972 views

Installing windows on late 2009 iMac 27"

I've sucessfully installed Win 7 x64 twice on my imac before. However the 2009 iMacs had faulty HDD, I had it replaced and after that I have trouble installing windows. I know about the display ...
1
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3answers
1k views

How to enter boot menu without command key?

My Macbook air has a keyboard issue, the Z key does not work except upon startup where it becomes stuck for several seconds. This interferes with opening the boot menu on startup, because it detects ...
1
vote
1answer
2k views

Formatted a Bootcamped drive as a dynamic disk, now can't boot to either Mac or Windows

I was trying to create an extra partition to get a file from the Windows side of my Macbook Air to the Mac side, and I accidentally made the disk dynamic without realizing it. I am now unable to boot ...
1
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3answers
1k views

New Corsair ram beeping on late 2008 MacBook

I purchased Corsair RAM memory (2x4GB) CMSA8GX3M2A1066C7 from Amazon.com. According to the description it "Works with any Mac computer that supports 4GB DDR3 SODIMMs". My MacBook supports 6GB ...
1
vote
2answers
2k views

How to tweak boot time by disabling apple kexts (including cryptography related ones)?

Initially, I am running OSX Mountain Lion on a mid 2010 6,2 MBP. I wanted to enhance my boot time a little, maybe by disabling some official apple kexts. Has anyone played with that, knowing which ...
1
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2answers
3k views

MacBook Pro won't boot anymore after a fall

I have an old MacBook Pro (late 2006) and he won't boot anymore. He fell down the table and ever since, he's not working anymore. When I try to boot him, the hard drive and the fans starts spinning, ...
1
vote
2answers
492 views

Is is possible to prevent OS X firmware password removal?

The title pretty much says it all. I have set a firmware password on my MacBook Pro just to make things a bit harder in case of theft. Still, by pulling the RAM and resetting the PRAM, it would be ...
1
vote
3answers
9k views

Troubleshooting MacBook Air boot issues

I have a late-2010 MacBook Air (11inch, 3,1), running Snow Leopard. I hadn't run software update in a month or two, so I plugged it into the wall and ran software update last night. Unfortunately, ...
1
vote
1answer
136 views

Can you run Disk Utility from bootable lion disk?

I've made a bootable lion disk by extracting the InstallESD.dmg from the lion installer app's package contents. - (Contents>SharedSupport>InstallESD.dmg) When booting from this disk, can you run disk ...
1
vote
3answers
247 views

Diagnosing a broken laptop

I have a 12" PowerBook with no HD and a dead screen. I'm trying to determine if the actual LCD is broken or if it is "just" the graphics card, without taking out the screen and transfering it to ...
1
vote
2answers
4k views

Gray screen after installing Yosemite

Yesterday I updated my 2012 MacBook Air to Yosemite. Everything was good, everything working great, but, at the end of the night, my laptop’s battery was low so I decided to shut it down, instead of ...
1
vote
1answer
121 views

Mac wont boot and fan runs high

My Mid 2013 macbook pro recently will no longer boot. I was using it normally (no excessive use) and then all of a sudden it just went black and shut off immediately. I can no longer boot it (I got it ...
1
vote
1answer
303 views

Macbook Air intermittently can't find startup disk

About six months ago, my Macbook Air started having a strange issue where it would often not be able to find the startup disk, giving me the flashing question mark. Initially, I was convinced the hard ...
1
vote
1answer
104 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 < ...
1
vote
3answers
3k views

Replacing “apple hardware test” with “apple diagnostics”

According to this article, holding down the "D" key while my MacBookPro11,3 boots should bring up "Apple Diagnostics". However, "Apple Hardware Test" comes up instead. When I try to run in, it ...
1
vote
3answers
430 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
vote
1answer
384 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?
1
vote
2answers
166 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 ...
1
vote
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 ...
1
vote
4answers
2k 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
1answer
738 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 ...
1
vote
1answer
3k views

restore Mac OS Mountain Lion to factory settings without discs or time machine backups

I installed XCode 3 on Mac OS Mountain Lion 10.8 and now I am getting the Apple BSODs. Can I do a system restore without having the discs as I seem to have nothing to use, also I have no Time Machine ...
1
vote
1answer
10k views

How do I get into boot options with a non-mac keyboard?

I boot my mac mini, hold down alt on my non-mac keyboard, but it does not go to boot options. How do I get to boot options with a non-mac keyboard then?
1
vote
2answers
365 views

Lion Boot from a Flash Drive Mac

So I'm trying to load a Lion DMG onto a 16GB flash drive according to this tutorial, but I only get as far as step 9. The data starts to restore to the flash drive, but right as it gets to the end, ...
1
vote
1answer
168 views

Is this fun partition mess I have made fixable on the Mac OS X side?

On a MacBook Pro, a wrong decision long time ago still causing numerous problems. In a nut shell, I run bootcamp and OS X together on the same drive and the OS X stopped booting a while ago (I was ...
1
vote
2answers
117 views

Keyboard shortcut to prevent login items from loading but still allow extensions

I know that if I boot my Mac while holding down Shift, then it does "safe mode" which causes it to boot without either login items or extensions. I often want to boot the computer and not load login ...
1
vote
4answers
515 views

Is the boot time of an iOS device affected by the apps that are running at shutdown?

I suspect that apps that use system services might take time to register each app in the appropriate places at startup. Is the boot time of an iOS device affected by the apps that are running at the ...