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

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
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2answers
790 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
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0answers
361 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 ...
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2answers
113 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" ...
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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 ...
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2answers
961 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
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1answer
168 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 ...
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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 ...
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1answer
4k 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 ...
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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 ...
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1answer
193 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 ...
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2answers
15k 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 ...
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2answers
584 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 ...
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3answers
932 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 ...
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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 ...
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3answers
996 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 ...
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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 ...
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2answers
2k 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, ...
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2answers
472 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 ...
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3answers
8k 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, ...
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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 ...
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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 ...
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1answer
46 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 < ...
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3answers
2k 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 ...
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3answers
209 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 ...
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1answer
236 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
135 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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1answer
84 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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3answers
1k 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 ...
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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 ...
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2answers
360 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, ...
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1answer
156 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 ...
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2answers
111 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
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4answers
468 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 ...
1
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1answer
614 views

What's the startup/reboot time for iPad (3rd generation) compared to other iOS devices?

I'd like to know, in people's personal experience so far, about how long the new iPad takes to start up (in seconds), especially when compared with other devices running iOS. For the purposes of ...
1
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1answer
2k views

Create bootable USB drive from Linux ISO

I'd like to take a Linux ISO (e.g., CentOS, Ubuntu), and create a bootable USB drive. (It will be used for booting on a stock PC, not on the Mac). How do I go about creating such a drive using a Mac?
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2answers
451 views

My personal settings on OS X disappear after booting Windows (XP or 7) on my MacBook Pro

I installed Windows 7 (and XP before) on my MacBook Pro and whenever I boot my Windows and after that boot my OS X my clock shows the wrong time and my login items that I set in the system preference ...
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3answers
59 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 ...
1
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1answer
46 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 ...
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2answers
4k 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 ...
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2answers
5k views

Create a Bootable Windows USB from a OS X to work on a PC

What I need to archive is Create a Bootable usb drive from Windows 7 iso image using a Mac running. Use the flash drive to boot and install windows on a PC (not Mac) What I'm looking for is an app ...
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1answer
234 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
68 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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2answers
666 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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1answer
1k views

iMac Startup I/O Error Despite Successful Disk Repair

My Early 2008 iMac with OSX 10.8.5 no longer boots beyond grey screen with spinning gear. Verbose mode shows a load of I/O errors. Disk Verify/Repair run via recovery partition completes successfully, ...
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2answers
4k views

OSX system and installation disk won't boot

Problem: I cannot boot into system nor can I boot to the installation disk. Errors I get in verbose mode: BSD root: disk0s2, major 14, minor 2 disk0s2: media is not present 0 [Level 3] [ReadUID ...
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1answer
159 views

Switch from a not-installed Windows partition to Mountain Lion

I tried to install Windows in dual boots (version 4 I think) in my Macbook Pro 10.8. Everything was fine until Windows boot for the first time for it's installation. The operating system was not able ...
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1answer
112 views

Macbook Pro 2011 Snow Leopard Boot Camp with Parallels Desktop 8

Quick question in response to a very thorough bootcamp post already on this forum. For anybody that has a working Mac, Windows and Shared partition ... is the Boot Camp partition recognised by ...
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1answer
550 views

How can I boot my MBP into normal mode despite shift key being broken (and on)?

I recently went to the Apple store with my laptop because it would only boot into safe mode and would not accept my password. While there, they said some liquid ruined something in the inside of my ...
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1answer
134 views

Boot into Safari-only mode in Mountain Lion?

In Lion, you used to be able to boot into a Safari-only mode. Where did that go in Mountain Lion?