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

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3
votes
4answers
3k views

Installation stuck at grey boot screen on Macbook Pro 4,1 (Early 2008)

I would appreciate any help you guys can give me since I would really like to upgrade my laptop to Mountain Lion. Computer: Macbook Pro 17" 4,1 (Early 2008) RAM: 4 GB RAM Hard drive: 128 SSD Hard ...
3
votes
1answer
526 views

Mac Mini Server running Mountain Lion (10.8.2) is freezing during boot (last line: IPv6 packet filtering initialized)

Starting in verbose mode (Cmd+V), the last line I see on the console is: IPv6 packet filtering initialized, default to accept, logging disabled This happens regardless of having an ethernet cable ...
3
votes
1answer
9k views

Stop-sign after boot and “Still waiting for root device”

Need some advice regarding a problem starting up my Mac Mini (mid 2011). The other day I was browsing websites when the machine froze with the spinning beachball. So I was forced to power off/on my ...
3
votes
2answers
670 views

Help diagnose errors on MacBook that will not boot

I have a MacBook which won't boot beyond the grey screen / Apple logo. With some key combo (can't remember what I did!) I managed to get a black screen with text output - see image. Can anyone offer ...
3
votes
1answer
413 views

MacBook Air dual boot Lion+10.6

Can a 2010 MacBook Air internal SSD be configured for the dual-boot of both Lion/10.7.x and Snow Leopard/10.6.x? If so, how much extra storage space is required for 2 boot partitions vs. one? Other ...
3
votes
1answer
575 views

Mac Book Pro 3,1 uneven startup behavior - sometimes start between 5min to 30min after pushing power button

First of all my Mac Book Pro wont start up after going to sleep mode - all black screen etc. When i choose power down from the menu - well it doesnt power down completely - the harddrive is still ...
3
votes
3answers
3k views

MacBook Pro won't boot into safe mode or from DVD

Specs: MacBook Pro 7,1, 2.4gHz Intel Core 2 Duo, 4GB DDR3 RAM, 500GB HDD with Snow Leopard v10.6.7 I'm having a weird problem. I want to boot from the install disk to run Disk Utility because I'm ...
3
votes
1answer
4k views

Is the first boot after a full system restore from TimeMachine supposed to take a long time?

I have had the hard drive in my iMac replaced and now I'm trying to restore it from my TimeMachine back up. I thought the TimeMachine back up was corrupt but maybe I'm just not patient enough, or I'm ...
3
votes
1answer
534 views

How can I get boot details when booting from Snow Leopard DVD?

I'm running into a situation where I need to repair my main partition but I can not get my machine to boot off the Snow Leopard DVD. It will boot up, let me choose my language, then go to the ...
3
votes
2answers
1k views

Old Mac OS X, cannot get admin access, boot safe or single-user mode, nor reinstall

I have inherited an old Mac OS X 10.5.8 + original install DVD. Model: Power Mac G4 Identifier: PowerMac3,6 Processor: PowerPC G4 (3.2) DVD: Mac OS X Leopard Install DVD Version 10.5 I'm trying to ...
3
votes
1answer
5k views

Macbook boots up to grey 'prohibited' symbol

I'm having an issue with my '09 13" Macbook Pro. When I boot it up, it seems to be booting normally until about thirty seconds in, when the Apple symbol is replaced with a kind of 'no-smoking' symbol, ...
3
votes
2answers
1k views

Add Static ARP Entry at Boot

I'm new to Mac OS X. On Linux I'd: append to /etc/rc.local arp -i eth0 -s 192.168.1.1 00:00:00:00:00:00 I've figured out how to do it in Terminal: sudo arp -s 192.168.1.1 00:00:00:00:00:00 But ...
3
votes
3answers
1k 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 ...
3
votes
2answers
4k 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 ...
3
votes
2answers
4k views

Boot from different drive without using Alt/Option

My 2011 27 inch iMac will not boot, it plays the startup sound and then freezes on a white screen. I am fairly confident I could fix it myself if I could get it to boot from a USB drive or external ...
3
votes
1answer
481 views

How to set up an iMac not to look for USB Flash drive info during boot up?

Short question: is there a way to disable an iMac's USB Flash Drive boot up so that boot up time is faster? Details: My iMac has an external USB hub, and it has 3, 4 or sometimes 6 or 7 USB Flash ...
3
votes
1answer
3k views

What can slow down/How can I speed up the pre-kernel boot steps?

I've got a late 2007 Macbook Pro with 4 GB of RAM and an SSD. I am running Boot Camp and have an OptiBay. I have partitioned the SSD and secondary drive to devote half of each to Lion and half to ...
3
votes
3answers
14k views

Boot from USB on MacBook 1.1 (early 2007)

I’m trying to install Windows 8 from USB on my MacBook 1.1 (early 2007). I have tried booting using rEFIt (on 10.6): Partition my USB key as MBR: the Windows 8 logo fish stays stuck forever. ...
3
votes
1answer
2k views

Diagnosing a dead MacBook Pro

Anyone got a good checklist for diagnosing the problem with a dead MacBook Pro ? I've a 15" MacBook Pro Core Two vintage machine that has suddenly stopped booting up. I can hear the Superdrive spin ...
3
votes
2answers
363 views

Is it possible to specify a different root device to a MacOS kernel?

I have an old iBook (2003, G4) with a burnt-out harddrive. Being a poor academic, I don't want to bother with replacing the drive. I'd like to use an external USB drive in place of the harddrive. I ...
3
votes
3answers
1k views

How do I clone a dual-boot Macbook

I have a Macbook Air set up for dual-boot (Lion & Windows 7) and am planning on buying a newer model. How would I go about cloning the entire hard drive to the new machine? Do I need to ...
3
votes
1answer
2k views

MBPr with El Capitan freezes at or right after login

Here's the problem: my colleague has a MacBook Pro Retina with El Capitan installed and he's been having issues with regular freezes lately. Everything has worked fine under Mavericks for well over a ...
3
votes
2answers
121 views

MacBook Internet Recovery “?” Folder

With my 2012 MacBook Pro, I'm trying to reinstall Mac OS X (any version that will work) onto a new Solid State Drive that replaced a broken one. I can get to the Internet Recovery screen just fine ...
3
votes
0answers
4k 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 ...
3
votes
1answer
499 views

Yosemite Startup Manager After Downgrading to Mavericks

I downgraded from Yosemite Public Beta to Mavericks by: Created bootable Mavericks USB Booted Mac to the Mavericks USB Went into Disk Utility > Selected HD and Erased HD Restored to Mavericks Time ...
3
votes
1answer
445 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 ...
3
votes
0answers
62k 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 ...
3
votes
1answer
308 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 ...
3
votes
0answers
415 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.
3
votes
1answer
99 views

How to diagnose long start up

My Macbook Pro (OSX 10.8.2) is taking a long time to settle down after booting. I am guessing there are some background processes/apps that are taking a while to start and hogging resources. What is ...
3
votes
3answers
13k views

Cannot access vital boot options on Mac Pro with OS X Lion

I have this used Mac Pro (mid-2010) that I recently bought, that came with OS X Lion installed. It was apparently installed from an image because there are a lot of installed apps and, though there is ...
2
votes
6answers
3k views

My mac has 64-bit EFI, but it only boots with 32-bit kernel

I followed the guide at http://macperformanceguide.com/SnowLeopard-64bit.html to boot into 64-bit mode. I had no problems with the instructions and on the boot screen it says "PAE enabled, 64bit mode ...
2
votes
5answers
901 views

How can I install OS X Lion on a new HDD?

I need OS X Lion on a new HDD that I am preparing to install in a MacBook. Since I don't have an existing disk to boot up and Apple isn't selling flash drives with it (or are they?), how do I use it ...
2
votes
2answers
171 views

Cloning Macbook Pro HD to external HD and still using it

I am still on Mavericks and want to upgrade OS X, but since I use a lot of audio apps, plugins etc that would break - I am looking for a way to clone my entire Macbook Pro 1TB SSD as it is right now ...
2
votes
5answers
68k 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 ...
2
votes
2answers
325 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. ...
2
votes
2answers
514 views

On/Off vs. Sleep Mode

The new retina MacBook Pro is boot so quickly that if I don't use it for even 5 minutes it doesn't make a difference to me whether I shut the computer down or sleep it. What is the best option for ...
2
votes
2answers
7k 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 ...
2
votes
2answers
8k views

Ubuntu bootable USB drive does not show up as bootable

I tried to make a bootable Ubuntu installation USB drive accordning to these instructions. However, when the procedure is finished, the USB drive does not show up in the "Startup Manager", nor does ...
2
votes
4answers
24k views

MacBook Pro refuses to boot/recover, hangs at “white screen”

I am somewhat new to caring for Macs, but one has been left in my care and I have not been able to restore it to working order yet. Here are the symptoms: The MacBook Pro would hang with a "white ...
2
votes
4answers
11k 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 ...
2
votes
1answer
701 views

How does Apple achieve such an ultra fast boot up?

I'm a recent Mac user (MBP) and the booting time really surprises me. Within few seconds, from complete power down, the OS prompts you to log in, then the rest just flies! And even faster recovery ...
2
votes
4answers
41k 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
2answers
9k views

How do I install Linux on an Intel iMac with no OS nor CD drive

What I want: Linux on an Intel iMac (Core Duo). What I have: An empty PC (17" Intel iMac) with broken CD drive. It's model A1173. This PC with Ubuntu 12.04 and an old Windows Vista partition. a ...
2
votes
1answer
613 views

Restored from Time Machine, no boot

I restored from a Time Machine backup onto a new HDD, this was using a disc with OS X Lion Upon boot, in verbose mode, the text hangs after initpool: offset = 0x08000000 size = 0x0800000. I would be ...
2
votes
2answers
825 views

What does a firmware password protect?

If I create a firmware password on my MacBook, what does that protect me from? Does it protect from any of these: Reformatting the hard drive. Switching OS to boot from (e.g. if Boot Camp is ...
2
votes
2answers
2k views

Macbook Pro.[Mid-2012] Sound isn't working

Suddenly, My MBP sound isn't working. I have tried couple of way to resolve the problem but nothing is working. Here is some of the screenshot: No, input or output sound. I would like to know 1) ...
2
votes
3answers
5k 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 ...
2
votes
5answers
30k views

How do I fix my SSD after installing Yosemite and Enabling TRIM? No boot & can't erase

I recently upgraded to Yosemite, enabled FileVault and foolishly enabled TRIM (had no idea it wasn't supported). Upon restart, my machine gets the grey screen with the crossed-out circle of death. ...
2
votes
2answers
15k views

How can I boot my dual-booted Mac back to OS X?

I have a MacBook Pro and run Windows XP on it too much however I cannot remember how I can open the MacBook Pro with OS X on instead of Windows XP. How can I boot back to OS X?