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

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26
votes
2answers
86k views

Creating A Bootable USB Of Windows 8.1 On OS X?

Reasons for wanting create such a usb include: PC is unbootable and you want to prepare a bootable USB using the ISO file that you have on your external hard drive. to install Windows 8.1 on Mac ...
21
votes
5answers
15k views

How can I run/stop/relaunch an application automatically, at boot/login/some other time?

How do you make a script or app to run or stop running automatically when the system is booted, a user logs on, at a specific time, when a disk is attached, etc.?
15
votes
2answers
30k views

How do I set OS X to boot by default?

I set Windows 7 to my Boot Camp. Windows 7 starts now by default in the normal boot. However, I want that OSX boots by default and Windows 7 only as I press ALT and then select it. How can you set ...
13
votes
4answers
77k views

How to install OSX Mavericks in VirtualBox

I have been trying to use Hackboot to install OSX Mavericks in VirtualBox, and using an ISO image created by following the steps at How to create bootable ISO for OS X Mavericks The steps I have ...
10
votes
4answers
35k views

How do I make a bootable USB flash drive for a MacBook Air?

Does anyone have a Terminal command-line recipe for making a new bootable USB flash drive for one of the new MacBook Air's? Is there a way to dd copy the USB boot device that comes in the box and ...
9
votes
4answers
2k views

What would it take to make an iPad support multiple user accounts?

As a mobile computer, the iPad is very personal, but it also begs to be shared. And that's a problem. I don't want my friends to be able to check my emails or delete my high score when they play with ...
8
votes
2answers
2k views

How to disable single-user boot (command S)

By default, Macs are extremely insecure if somebody can get physical access, as they can simply shut it down, press the power button, hold command-S, and there, they get root access in 5 seconds. Is ...
8
votes
4answers
2k views

Why have 5 different iMacs developed corrupt OS X partitions when the physical drives are fine?

I'm a tech for my local school district and we are having some problems with our iMac Multimedia Lab. Over the past nine months, 5 of the 22 iMacs have suffered from filesystem corruption. The only ...
7
votes
2answers
667 views

Move complete Lion installation to another physical drive

is there a way to completely move my OSX Lion to my new SSD without reinstalling? I came from Windows and Linux to OSX and i thought maybe it is possible to simply change the bootloader config after ...
7
votes
2answers
585 views

How can I see the system status during boot?

I would like to monitor the messages generated when I boot my Mac, similar to what you on a *nix box. Is there key-combo to press/hold that will let me do this?
6
votes
4answers
13k 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 ...
6
votes
4answers
5k views

Can I schedule startup and shutdown with different settings for weekdays and weekends?

Everyday, I usually start my Mac Mini at 16:00 and shutdown it at 2:00 using the Energy Saver schedule settings. I would like to be able to set a different behavior on the Weekends starting Mac Mini ...
6
votes
4answers
6k views

Is there a way to power up a Mac Mini remotely?

Is there ANY way to Power Up a Mac Mini remotely? Just to be clear, I don´t mean wake up from sleep but boot up.
6
votes
4answers
3k views

For a FileVault user of Mountain Lion: can I avoid the automated login, which normally follows unlock of the encrypted startup volume?

I have FileVault enabled with two users: AdminGuy OtherGuy. I want AdminGuy to: have the ability to unlock the HD, and therefore only he can enter a u/n + p/w at boot to start boot up have the ...
6
votes
4answers
6k views

How can I change the title of a boot image?

I have an external Hard Drive with two bootable partitions on it. The first is an image of a Mac OS X 10.6 Install DVD, and the second is an image of a Mac OS X 10.6.3 Install DVD. When I plug the ...
6
votes
3answers
15k views

Boot into Mac from Windows after failed Bootcamp

Don't hate on me too much for this one... I put Win8 on my Mac Mini using Bootcamp, and all was well. I switched back and forth a couple times between the two with no problems. The problem started ...
6
votes
3answers
21k views

Repair disk from single user mode (fsck fails)

Earlier today my 2009 iMac emitted I/O errors trying to copy files. So I ran disk utility, verify disk to see if anything was amiss. It was. But as it's my startup disk I couldn't repair it, so I ...
6
votes
4answers
426 views

iMac shows frozen at bootup, but computer running normally in background

I'm on an Intel iMac running Lion. I'm having major issues with my iMac. The iMac froze whilst using Chrome, and I was forced to reset it. After the reset the screen seemed to freeze on the apple ...
6
votes
5answers
3k views

How can I boot to Safari Only (Chromebook style) in Lion?

How can I boot safari only in Mac OSX Lion Chrome OS style? I heard that there was a key that one had to hold at startup, which one is it?
6
votes
1answer
2k views

Stuck in a boot loop after failed update to Mavericks, can't reformat HDD

I recently tried to upgrade a 2008 Mac Pro from Snow Leopard (10.6.8) to Mavericks (10.9.2) using the free upgrade available in the App Store. The upgrade seemed to go without a hitch until the ...
5
votes
1answer
184 views

Is this possible? Prevent Live-Linux from booting and grabbing your files without encrypting your disc?

I am a medium-experienced Power User with knowledge about most of the stuff (studying this since two years) and I know something about how Linux and Windows work; I have screwed up countless ...
5
votes
5answers
10k views

How to permanently disable (defective) graphics card in MacBook Pro?

My graphics card has malfunctioned and is preventing my MacBook Pro (2011) from booting. Based on my research I will have to otherwise have the logic board replaced. The defective ATI graphics card ...
5
votes
1answer
3k views

Is blessing the Ubuntu partition reversible in OS X?

I'm considering using Ubuntu as a main OS. So far, I've been using it in a dual boot setup with OS X. The dual boot worked by holding the ⌥ alt key upon boot (not rEFIt). Blessing the Ubuntu ...
5
votes
3answers
7k views

How do you install and use a Linux partition on Mavericks?

As a just-for-fun type of experiment, I was wanting to install Linux on an external drive that I own and boot it up on my 2007 iMac desktop. I know there are a plethora of guides out there on how to ...
5
votes
3answers
14k views

What can be done to fix a 2011 iMac that will not boot past the white screen?

I have now tried opening the iMac and removing the cables to the SSD, it still gets stuck on the white screen. I tried again, removing the cables to the HDD as well and the same thing occurs. No idea ...
5
votes
1answer
1k views

Installing Windows manually

Here's the situation: I've got three partitions on my disk - EFI, OS, and a Data Partition + 40 gigs of free space for a Windows partition. I already deleted the Recovery partition to avoid conflicts ...
4
votes
2answers
3k views

disk full - Mac OS won't boot

My friend has a problem getting Snow Leopard to run because the disk is completely full. I suggested getting into command line mode (CMD+S on boot) and delete some things, but it didn't work (nothing ...
4
votes
3answers
4k views

Mac won't boot: Way to mount drive and delete one file?

My macbook is currently a brick. I added a /etc/launchctl.conf file that must be malformed. The OS now crashes even when attempting to start in safe mode: "launchd System bootstrapper has crashed: ...
4
votes
1answer
6k views

Running a command whenever Mac boots up with launchctl/plist

I need to run nohup nice synergys -f --config ~/bin/conf/synergy.conf & command whenever the computer boots up. As is written in this post, I came up with the following plist code. <?xml ...
4
votes
3answers
14k views

How do I make my 1.5 GHz PowerBook G4 boot from a USB stick?

I actually want to boot Linux but since that is not working I'm thinking some one might know on the Apple end. If there's a way to boot Mac from a USB stick, then booting another operating system ...
4
votes
1answer
2k views

Boot MacBook Pro into non OSX operating system from external harddisk

I have a MacBook Pro and an external HDD with Ubuntu, I can use this HDD to boot other machines into Ubuntu but no amount of pressing option would make my MacBook Pro think that the drive is bootable. ...
4
votes
1answer
441 views

Wake on LAN for MBP late 2009

Is it possible to wake my MBP via Magic Packets from power down? I read Power up Mac Mini remotely, but that does not seem to work from power down. "Wake for network access" in "Energy Saver" prefpane ...
4
votes
2answers
3k views

Install and boot Windows from USB hard drive?

I would like to install Windows 7 on an external USB 2.0 500 gb hard drive. Is it possible to both install to and boot from this USB drive from my MacBook Pro 2010?
4
votes
1answer
2k 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 ...
4
votes
3answers
1k views

How do I set my mac to ask what disc I want to boot from without having to hold alt?

I can switch between OSX, Windows and a network drive, but I cannot seem to find this option anywhere.
4
votes
5answers
11k views

MacBook Air has suddenly become very slow at booting and shutdown

I have a Late 2010 MacBook Air, and it has a 256 GB SSD, 2.13 GHz processor, and 4 GB RAM. It has been lightning fast ever since I bought it and I upgraded to OS X Lion and it was super fast. Boot ...
4
votes
4answers
1k 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, ...
4
votes
1answer
516 views

How can I tell OSX NOT to mount some of the drives in my computer?

I have a Mac with a Windows drive that I occasionally boot to. Most of the time, I'm using the Mac, and the Windows disk always mounts and shows up on the desktop. I would like to keep it from showing ...
4
votes
1answer
7k views

How do I change the default boot option on rEFIt?

I have two copies of OS X (10.6 and 10.7). By default rEFIt boots 10.6. However, I want to make it boot 10.7 instead. How do I do this?
4
votes
1answer
1k views

Always prompt for Boot Device on Startup?

I have a MacBook where I have to dual boot Windows and OS X. When I hold the Option Key on startup, I get the nice "Select Boot Device" screen. Is there a way to permanently enable this, so that I ...
4
votes
1answer
588 views

Trapped: MacBook always shuts down during EFI SMC Update 1.8. Can't boot. How to remove updater from boot routine?

MacBook Pro i7 Mid-2012 (MacBookPro9,2) running Mac OS X 10.8.5: Downloaded the "offered" EFI SMC Update 1.8 through the AppStore Updates. MacBook restarted, grey progress bar appears w/ spinning ...
4
votes
3answers
1k views

How to create a bootable USB drive for Disk Utility?

Disk Utility says my boot drive need repair. Unfortunately my DVD drive is toast, so I can't boot from the install DVD and make the repair. Is there a way I can create a bootable USB drive and ...
4
votes
1answer
427 views

Apple recovery partition possibly creating problems in Ubuntu

Before reading, it may help to know I have a 13" Macbook Pro (model 7,1. Mid-2010). Recently, the HFS+ filesystem on my OSX became corrupt and after many trials and errors, it was clear I was going ...
4
votes
1answer
1k views

Macbook Pro Early 2011 15 inch, Mountain Lion Booting issue

My Macbook Pro is not booting normally. I tried many options but no success. If I try to recovery mode or try to boot from USB, a blue screen appears. So I can't do fresh install. I checked hardware ...
4
votes
1answer
211 views

Mac Pro failing to boot

Two times now, over the last 3 weeks my Mac Pro is failing to boot. Once on, it stays on the blue screen with the spinning icon and never gets to the login screen. To remedy this I boot from install ...
4
votes
3answers
1k views

Renaming the startup disks shown during boot

I'm dual booting OS X (Lion) and Arch Linux, and when I hold down "option" during the boot process, I am presented with both of my startup disk options (i.e., OS X and Linux); however, they are named ...
4
votes
0answers
1k views

Macbook Pro hangs when booting into Boot Camp Windows 7

I have a 2011 Macbook Pro 15" 10.7.4 with Windows 7 installed in Boot Camp. A few days ago, I tried to boot into Windows 7 and it just froze after I selected the Boot Camp volume on the Select Drive ...
3
votes
4answers
22k views

How can I disable Safe Boot or the Shift Key?

After a spill on the keyboard of my unibody MBP 17", the ⇧ key reports as always on. Under Windows (BootCamp) and Linux (LiveDVD) I can easily get around the problem by using an external ...
3
votes
1answer
2k views

Upgrading new Mac Mini to have SSD. Do I have to buy Lion, or can I just re-download from App Store?

EDIT: The accepted answer below works, but I can also confirm that just booting the stock machine and visiting the App Store, you can just re-download it and make a boot USB drive before swapping out ...
3
votes
3answers
1k 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 ...