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

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4answers
20k views

Lion hangs on boot with empty progress bar and then switches off

Today as I was working on my MacBook Pro, it became incredibly slow and almost impossible to work with. I spent five minutes trying to restart it from the system menu, and eventually I did. It took ...
1
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1answer
2k views

Snow Leopard installer ISO on USB flash drive

I have the setup ISO file for my Mac OS X Snow Leopard. I need to be able to boot this and install it to a USB drive (from a windows pc by booting the USB drive). I can't run it in a virtual ...
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3answers
759 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 ...
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2answers
1k views

Ejecting CD from Mac after fresh install?

I just installed Lion on a Mac Mini, and I can't get the CD to eject. Currently, the computer boots up to the "Welcome" screen for new installs, where the Country/Region is selected. I want to leave ...
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2answers
22 views

Mac runs same vm. Cannot exit

I have inherited some Mac-based machine, but when I power it on - virtual machine with Windows XP starts. I cannot figure, how to exit this mode or restore Mac to factory defaults. I tried booting ...
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2answers
323 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 ...
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2answers
1k views

Macbook Pro not Starting

I have a MacBook Pro and from the last week I have been unable to turn the machine on properly. First it displays the Apple logo and shows this message I've done a lot of research and tried things ...
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2answers
3k views

MacBookPro stopped booting what should I try?

My 2008 MacBook Pro suddenly stopped booting the other day and now the screen looks like this each time it attempts to boot: The boot time sound still happens, but I just see the dodgy pink with the ...
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1answer
9k views

How to install Snow Leopard from USB where USB disk is prepared using Linux?

I'm trying to install Snow Leopard (a retail version) into my MacBook, but seems like that the MacBook can't find the boot disk over USB. I guess this is related to the fact that I mounted the .iso ...
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1answer
496 views

Is there a way to burn a Lion installation DVD-R from a new Mac mini or Macbook Pro?

I got a new Mac mini and Macbook Pro, and hope to burn a Lion installation DVD-R if it needs to be used in the future. But I searched for any file greater than 1GB on the hard drive and didn't find ...
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3answers
1k views

After updating to Lion, can't re-install Snow Leopard or Lion

Here is my situation: I have a 2010 iMac that came with a Snow Leopard disc, which I installed. Then, when Lion was released, I upgraded to it. However, yesterday, I had to erase my entire HDD ...
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1answer
1k views

Remove 2nd partition, reclaim space

If I have a dual booting computer (os x 10.7 and Linux), and would like to remove the Linux partition and return it to one single large disk running os x, how is this done? Is there risk to messing up ...
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1answer
22 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. ...
0
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1answer
307 views

USB Boot iMac 4,1

I have a Fat32 USB that I would like to boot on my iMac 4,1. The Mac does not recognize the device from the boot menu (option key on boot) and I have tried the Plop disk but it freezes when it says ...
0
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1answer
95 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 ...
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2answers
4k views

Is it possible to make a bootable USB stick for a Macbook Pro to do firmware update?

I know there are some possible duplicates. But the questions are not solved. Such as: Copy Crucial SSD Firmware Update ISO to Bootable USB I am trying to upgrade the firmware of my SSD (crucial m500) ...
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2answers
269 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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2answers
406 views

Why my macbook sometimes plays a chime when booting/rebooting, sometimes it does not?

I don't observe any specific pattern of this behaviour. Strangely, sometimes when my macbook reboots/boots, it plays a chime sound. And often in other cases, no chime sound is played. So what ...
0
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1answer
61 views

Why would a macbook running OS X 10.7.5 boot up on its own at the same time every night?

The macbook was turned of around 10:22PM. At 12:00:09 sharp it boots up on its own. This happens every night even though the user turns off the machine at around 10PM every night. Why would this ...
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1answer
1k views

Is it safe to reformat drive during Recovery Mode install?

I've inherited an almost brand new 13" Macbook Pro Retina. I'd like wipe the hard drive clean and start with a fresh install of Mountain Lion. I've done this a million times before... but never while ...
0
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1answer
297 views

Mountain Lion no login field after booting

My 2012 MBA (no bootcamp) just shows a bare splash screen without user avatar nor password field after booting. Now I've seen this problem twice, I can type my password and then hit return on keyboard ...
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2answers
2k views

Accesing files with Mac not booting

Is it possible, say with Lion recovery partition or any other way, to access individual files on the hard drive to copy them before reformatting it to do a clean install? It is not possible to boot ...
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4answers
3k views

Lion won't start after EFI update

I installed the new EFI update for my MBA Mid 2011 (the software updater said it is recomended). The update went fine and restarted the mac afterwards. Then while booting the apple logo turns into a ...
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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
361 views

How to boot my mac mini up when my iPod Touch is near?

What I'm trying to achieve is if I'm near my mac mini (10 meters) I want to press a button (or something else) on my ipod touch and than my mac mini should boot up. How could I make that? There's a ...
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2answers
3k views

mac: /usr/sbin/diskutil verifyPermissions / hangs in single-user mode

I'm trying to repair my sister's iMac using single-user mode. Since a recent power outage (no surge protector) it won't boot. I used verbose mode to see where it was hanging ("mDNSResponder: adding ...
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1answer
140 views

Bootcamp load at startup with VMware

I have bootcamp loaded with Windows and would like it to boot and login at startup through VMware Fusion instead of starting manually after OSX 10.6.7 loads. Any ideas on how this functionality can ...
0
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2answers
694 views

Boot 2010 iMac from 2007 MacBook Pro's drive?

I am considering purchasing a 2010 27" iMac to replace my 2007 MacBook Pro as my everyday development machine. Ideally, I would like to work on the iMac when I am in my home office and work on the ...
0
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1answer
48 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 ...
0
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1answer
75 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 ...
0
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1answer
414 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 ...
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2answers
88 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/ ; ...
0
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1answer
647 views

Yosemite freeze at boot - no safe boot + I/O error

Yesterday everything was fine but today my macbook freeze/stuck during the boot. I've done this: check + repair permission (nothing changed) check + repair disk (nothing changed) tried safemode ...
0
votes
1answer
59 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
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1answer
268 views

Yosemite Grey Screen with 3d Party SSD not a trim issue

I have a MacBook 7,1 which i recently installed a PNY 250 SSD and added some RAM. The laptop was running awesome with OSX 10.6.8, lightning fast. Then I installed Yosemite. There was a bit of hang ...
0
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1answer
308 views

Booting from Windows USB Key Overwrote EFI - Mac No Longer Boots

I'm using a macbook pro running Yosemite. I was trying to create installation media to install linux on an SD card, and I used a USB key that had a bootable windows installation on it. I thought I had ...
0
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1answer
195 views

Booting an iMac using a Macbook Pro's internal disk

Suppose I have an iMac and a Macbook Pro. My Macbook Pro is my primary workstation, and when I switch to the iMac I would like my environment to be exactly the same in order to facilitate switching ...
0
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1answer
103 views

Where does the OS X routing table come from?

Trying to find out where the initial routing configuration for OS X is stored (plist, or wherever), and what happens at startup to read that configuration and configure the network interface(s).
0
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1answer
104 views

Macbook Pro 15 progression bar halts then circle spins

We have a Macbook Pro 15 Last 2011. The computer starts to boot, it shows the progression bar, then it disappears and the circle just spins. I have tried safe mode and it just spins. I just ran ...
0
votes
1answer
929 views

How to exit Recovery Mode on jailbroken iPhone

What I've searched so far says that my iPhone had goes to Recovery-Mode (Am I right?) because it stuck on Apple Logo and won't start. What I've tried so far : What is Soft DFU mode, and how do I ...
0
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1answer
96 views

If I mess up the EFI System Partition, will Mac OS X be unbootable?

I forgot to make a backup of my EFI System Partition (ESP) and have installed grub onto it. If I happen to accidentally mess up the partition, will OS X be bootable? If not, how would I restore the ...
0
votes
2answers
497 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 ...
0
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2answers
977 views

Apple infinite load. I/O error and even a new HD

My mac mini from the 2011 refused to boot. Apple logo and loading image forever.. I tried cmd+s: Went through all the steps from the applejack, tried fsck -fy, all semmed pok, Tried cmd+v: It ...
0
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3answers
77 views

How to copy my Mountain Lion system to another drive?

I'm considering upgrading at long last to Mavericks, but need to feel confident that all my apps & workflows will work properly before committing 100%. I boot off of an external Thunderbolt SSD ...
0
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2answers
6k views

How to create a 10.6.8 recovery CD (not clone of the OS or install environment)

Upon Google searching people seem to equate "recovery CD" with full installation. I have seen methods such as using Disk Utility with the Mac HD as the source and a DVD as the destination. This ...
0
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2answers
2k views

iPhone 5 stuck at Apple boot logo after screen replacement

My girlfriend smashed her iPhone screen. Being technically competent and after looking at YouTube videos of how to fix it I thought I would give it a go. After replacing the screen and moving the ...
0
votes
1answer
548 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 ...
0
votes
1answer
12k 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 ...
0
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1answer
530 views

Preventing booting from external media

Is it possible to set up Mac OS X 10.8 (Mountain Lion) on a MacBook Air so that users cannot boot from external media (e.g. a USB memory stick) and cannot restore the OS from the internal restore ...
0
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2answers
2k views

Mac Book Air mid-2012 completely disappeared disk

I've tried to wake up my Mac Book Air from sleep today, but I got a black screen. After waiting 10 min, I decided to shut it off by holding the power button a few sec. After restarting, I had a ...