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

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1answer
3k views

Dual boot Ubuntu 14.04 on a MacBook Pro

so after a few hours of Google searching and too many headaches with a broken GPT, I've turned here. I have a 2012 MacBook Pro (9,2) that I want to dualboot OS X 10.9 and Ubuntu 14.04 on. I've read ...
7
votes
3answers
8k views

Boot screen has wrong display resolution

I recently used my MacBook Pro (OS X 10.8.4) with a projector using a mini display port to VGA adapter. The resolution of the screen was modified from the use of the projector from 1680x1050 to ...
2
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2answers
595 views

Stop sign at boot - new SSD

I've got a mid 2012 MBP 13" in which I inserted a brand new MX100 in the place of the old HDD. I've put the old HDD in a case in the superdrive place and tried to install 10.10 but the install failed. ...
2
votes
1answer
34 views

Can I make a bootable drive for mid 2010 MBP with a Windows computer?

I have a mid 2010 Macbook Pro running Yosemite that I foolishly did a reset on while it was connected to an external monitor that was designated as default in settings And connected to a USB keyboard ...
0
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0answers
117 views

Power Mac G5 doesn't boot/black screen

I have a Power Mac G5 (Model No: A1047 EMC 1969C). My problem is that it doesn't properly boot anymore when powered up. When I'll press the power button, the white LED next to the button will ...
6
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4answers
16k 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 ...
2
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0answers
168 views

Broke Boot Camp while trying to get a triple boot

I'm running Yosemite, up-to-date on a mid-2012 MacBook Pro. I removed the optical drive, moved my internal HDD to its location and placed a new SSD in the original HDD's location. This has been great ...
0
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0answers
50 views

Internal HDD works with pc but not mac. MBP

I had bootcamped win 7 on my mac a while back until one fateful night I was hit with a bluescreen. When I attempted to restart I received a no drive recognized error. Since then I have done everything ...
0
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2answers
197 views

How to run a sudo command on mac? .. problem with mysql server

I 've installed mysql server with brew, and i need to run manually this command each time my computer start to make it work with an application that I can't edit. sudo mkdir -p -- /var/run/mysqld/ ; ...
3
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1answer
24k 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?
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0answers
110 views

Mac Pro 2008 Refuses to Boot

My Mac Pro 3, 1 began rebooting randomly one day and the next it wouldn't come back on. Pushing the power button results in a fan clicking in to life for half a second and then all power is lost. The ...
1
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1answer
117 views

Flashing question mark, low hard drive space

When I booted my Mac last night I got a flashing folder against a gray background. The computer started fine this morning, but when I closed the lid and opened it up again I had to reboot, and now ...
1
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0answers
76 views

How to Hide All users from fresh boot With FileVault 2

With System preferences>Users & Groups> Login options> display login window as "Name and Password" normally you need to type out the user name and password to sign in. With FileVault2, when ...
0
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0answers
112 views

Installing Windows on an Early 2011 MBP w/ swapped out SSD… major roadblocks

My problem started a few days ago when after installing my brand new 250gb evo ssd I decided having a windows partition would be nice. I had previously had this setup before having the ssd whenever I ...
1
vote
1answer
834 views

Can VirtualBox prevent Mac OS X Yosemite to boot properly?

After a few days of good experience with Yosemite, my Macbook pro cannot boot anymore. After 30 or 40% of boot, it just restarts. Here are what I did to fix it: Booting to single-user, runnign fsck ...
3
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4answers
2k views

Why does RAID 1 “Mirroring not provide performance improvements”?

I have always used Software RAIDs, either Apple-provided, or via SoftRAID, etc. I am about to re-zhuzh my arrays and decided to do a little research beforehand… and On Apple's site, there is a ...
0
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1answer
373 views

Boot Camp OS startup selection not available with Windows Alt

I am using iMac (Yosemite) and Logitech K800 wireless keyboard http://www.logitech.com/en-us/product/wireless-illuminated-keyboard-k800 (specifically the Finnish version of it). When I press Alt on ...
0
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1answer
254 views

MacBook Pro early 2011: sound loop, black screen

Over the last week I have had four similar incidents: When I played something on YouTube, the audio just loops for a few seconds, and then either the screen freezes or a black screen will appear. ...
0
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0answers
306 views

Bootcamp fail stuck at no bootable device (hold option not working)

I've been trying to find an answer to my problem all day with no luck. I tried installing windows 7 via bootcamp this morning. I accidentally created the partition before creating a bootable usb ...
0
votes
1answer
139 views

Folder with Question Mark On Startup, Don't Know the Firmware Password

So my buddy's macbook one day just booted up with a folder with a question mark in it. Its an old laptop from work, which he doesn't work at anymore. I've been trying to help him out, but I've ...
1
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1answer
83 views

MacBook boots automatically when opening lid. Feature or problem?

When my 13" Retina MacBook running Yosemite is powered off and I open the lid, it immediately starts booting up... without pressing the power button. Is this a new feature (maybe part of Yosemite) or ...
1
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0answers
835 views

How do I unfreeze my iPod Nano 4th Gen?

tl;dr -- My iPod hangs on the boot screen (black background, silver apple logo). When I try to restore it (on both my Virtual Windows XP and on a Mac laptop), it'll restore fine, but when it reboots ...
2
votes
1answer
108 views

MacBook Pro Mid 2012 startup chime from right speaker only

After installing a ssd into my Macbook pro mid 2012 (not retina), i noticed that the startup chime is coming only from the right speaker. (I am not sure if it was always like that or if its because of ...
0
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0answers
33 views

iPhone 5c Reset Not Progressing While Reseting

I recently got my son this 5c, when we went to restore it, the progress bar would not load. At first I thought it was a graphical problem, so I left it run for a few hours but it seems to be stuck. ...
0
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2answers
234 views

Mouse and Keyboard on MacBook Air mid 2009 don't work partially

My MacBook Air mid 2009 worked for 3 months without any problems on Yosemite. Two days ago the built in mouse stopped working along with the built-in keyboard. Right after it woke up from sleep mode ...
0
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1answer
150 views

Does Windows, running on latest Apple computers, see boot disk partitioned as MBR or GPT?

From my understanding, the newest apple computers boot Windows in EFI mode. Traditionally, Windows has seen the boot disk as an MBR partitioned disk. In fact, the boot disk (i.e. /dev/disk0) has aways ...
4
votes
1answer
1k views

How to start to recovery mode in a Mac OS X VM in Parallels?

Is it possible to start into Recovery/Internet recovery mode in a virtualized Mac OS X in Parallels? It would come in handy to take screenshots of those UIs or running apps to exemplify some steps ...
0
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0answers
50 views

Trying to boot brand new Mini from SuperDuper Backup - circle with line through it

Our Mac Mini went belly up, so I just got a brand new one. I had a nightly scheduled super duper backup to an external drive, which works fine on other Mac's (i.e. I can boot it up and run) On the ...
1
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2answers
468 views

iMac stuck at white screen - graphics issue?

I have a mid-2007 iMac that can't boot into OS X Lion unless it's in safe mode. When I turn it on, the Apple logo appears, then the loading spinner, then a white screen with no cursor. What makes me ...
0
votes
3answers
2k views

Yosemite boot times

I have a brand new iMac 3.5GHz i5 with 8GB of RAM with a non SSD drive. When I boot Yosemite it takes 52 seconds from the gong to the desktop, most of which is spent with the progress bar. This seems ...
1
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2answers
1k 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) ...
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0answers
295 views

Unable to Open /var/db/BootCaches/PreheatedUser/Merged.playlist

Running Mavericks and Disc Utility and fsck report no errors. Safe Boot reports Unable to open /var/db/BootCaches/PreheatedUser/Merged.playlist. Found a tutorial (or three) recommending to enter ...
0
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1answer
57 views

Can't change startup disk iMac

Here is my situation: I've only the mouse paired with my iMac because I rent the keyboard to a friend. Unfortunately the startup disk is set to a fallacious Windows partition that don't want to boot. ...
2
votes
1answer
991 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 ...
1
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2answers
4k 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 ...
0
votes
1answer
206 views

Shell script to boot OSX in recovery mode and execute another shellscript

I'm working at a University and we are restoring our Macs using Apples ars which works great. The process is to manually go to the computer - reboot it in recovery mode and then run the ars command to ...
0
votes
2answers
180 views

Macbook Air strange boot-up

I've searched before asking but couldn't find any related question with the problem that I'm facing. I have a new Macbook Air (1 month) with Yosemite 10.10.1 that from the beginning is having some ...
4
votes
4answers
4k 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, ...
1
vote
1answer
532 views

Accidently deleted some small sized partitions when installing WIndows(Bootcamp). OSX Partition wont boot

I tried to install Windows 8 into my Mac via Bootcamp. I booted into the Windows 8 Installer and had issues formatting the drive that I partitioned for the OS. Like an idiot, I deleted all of the ...
0
votes
1answer
4k views

Yosemite keeps restarting or going into grey screen

I have an iMac from 2011 and I have installed Yosemite as soon as it was released, without any issues before this one. Here is what happened: it has suddenly shut itself off, after turning it on, it ...
2
votes
5answers
24k 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. ...
1
vote
1answer
971 views

Can't boot from Snow Leopard DVD

I bought a new hard drive for my 2011 MacBook Pro and did the following steps: Backup using Time Machine Replaced the hard drive Put in a Snow Leopard DVD (10.6 from ~2009) Booted holding down the c ...
1
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0answers
37 views

Internal SSD not visible

When I boot up my Macbook Air (circa Sept 2013, running Mountain Lion), I get a folder with a "?", indicating the SSD is not visible. This started when I tried installing an Office upgrade, and ...
1
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3answers
5k views

How do I restore a Windows 7 DMG file to Boot Camp (and make it bootable)?

My iMac's HD died last week, and so I was unable to access OS X (I had a Time Machine backup of it though). Fortunately I was able to boot into the Recovery HD and use Disk Utility to backup Boot Camp ...
2
votes
1answer
4k 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 ...
0
votes
1answer
154 views

Macbook Pro Ram and/or Processor broken?

I am experiencing several problems with my MacBook Pro early 2011. It all started about two months ago with my wifi card. It lost connection to the network every few hours. The symbol in the status ...
-1
votes
1answer
84 views

Can I move a hard drive from a MacBook 13 to a MacBook 15?

I'm thinking of upgrading my machine to a 15" and wondering if I can just move the hard drive over and put a new one in the 13"? The reason is my 13" Macbook has a 2TB HDD and I'd rather keep that ...
0
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2answers
670 views

MacBook Pro doesnt boot after systemupdate / repairing volume doesnt work

i have a problem with my MacBook Pro. I installed a Systemupdate, reboot and then i had a loading screen which loads a long time. Then i started the mac in verbose mode and there is... hfs: mounted ...
1
vote
1answer
293 views

MacBook Pro only boots to grey Apple screen with spinning loader

My MacBook Pro boots to the hated gray screen. Things I have tried to fix this include: Booting with CMD-R (boots to a grey screen) Resetting the PRAM (boots to a grey screen) Resetting SMC (boots ...
1
vote
2answers
139 views

unable to boot my iMac

Recently, I attempted to re-install Mac OS X Lion on my 2007 iMac computer (EMC 2133), but during the installation process it got interrupted. After rebooting it just displays a blank grey screen ...