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

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10
votes
4answers
32k 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 ...
2
votes
3answers
5k views

How can I reset the PRAM if Recovery Mode keeps overriding the PRAM command?

Lion uses the ⌘ + R to boot into recovery mode. Resetting the PRAM in anything less than 10.7 was ⌘ + ⌥ + P + R. Recovery mode now seems to override the PRAM command. Does anyone ...
2
votes
1answer
773 views

Why can't I no longer boot into my MacBook Air?

My MacBook Air (Late 2011) hangs during startup at the Apple logo, and the spinning cursor freezes. I have booted into verbose mode and it hangs after the following messages: com.parellels.kext.vnic ...
4
votes
1answer
208 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 ...
3
votes
1answer
1k 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 ...
1
vote
3answers
817 views

Macbook (2,1) boots into blue screen and hangs

Last night, I shut down my computer. When I turned it back on, I just got the rEFIt logo (I have rEFIt installed). Usually, it takes a moment to populate the menu with a list of bootable devices, but ...
1
vote
1answer
426 views

Unable to boot up with Snow Leopard DVD

I accidentally deleted my /bin folder. My computer is now permanently stuck at the Apple screen with an infinite spinning indicator. I have: Inserted my Snow Leopard DVD Held down c - nothing Held ...
1
vote
1answer
3k views

Booting an Intel Mac to Linux from a U3 USB drive

Is it possible to boot an Intel Mac to Linux, or any non-OS X operating system, from the U3 partition of a USB drive? I know that because OS X uses EFI rather than BIOS for the boot process, the only ...
0
votes
2answers
944 views

27" iMac Hangs On Reboot

I've got a 27" iMac 2.93Ghuz Intel Core i7 running 10.7.2. Anytime I reboot (like for some software updates), it gets stuck at the gray startup screen (no Apple logo). If I press and hold the power, ...
0
votes
1answer
714 views

Command+S At Boot Doesn't Activate Single-User Mode

10.6.8. Hold down Cmd+S throughout the entire boot process. It always goes to the regular login screen and starts doing the "stop holding down buttons" chime. Why?
6
votes
4answers
417 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 ...
2
votes
1answer
287 views

2009 Mac Mini HDD as an External Drive for a 2011 Mac Mini HDD

I have a unique plan: I have a 2009 Mac Mini mid-2009 with 10.6 OS X. I just got the 2011 Mac Mini with 10.7. But I am planning to use the hard drive from the 2009 Mac Mini with 10.6 OS X as an ...
1
vote
1answer
2k views

Mac Mini has loud fan, won't power up

My intel-based mac mini (Model A1283, EMC 2336) refuses to boot. When I plug it in, the fan spins up very loudly, but then nothing happens when I hit the power button. I don't get a boot chime, and ...
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?
0
votes
2answers
348 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 ...
1
vote
1answer
111 views

Is there a way to automate restarting with a different boot disk?

I have Lion and Snow Leopard installed on my machine, and I switch between them all the time (I develop for compatibility on both platforms). Going into System Preferences and selecting the startup ...
0
votes
1answer
26k views

White MacBook hangs at gray Apple screen forever, won't boot to single user, won't mount using Disk Utility. What do I do next?

After a forced shutdown, my white MacBook hangs at the gray screen with the Apple logo and an infinitely spinning progress wheel. I can boot in verbose mode, but I didn't see any particular error, ...
0
votes
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 ...
2
votes
2answers
850 views

Can I dual boot Snow Leopard and Lion?

I own a Mac Mini 3.1 with Snow Leopard installed. I would like to dual boot with Lion for development purposes. I have partitioned my hardisk as described in Point (1) in this tutorial How to ...
1
vote
1answer
3k views

Constantly ejecting OS X install disc when trying to boot

When trying to boot from the OS X install disc (Snow Leopard) my Macbook will just eject the disc and boot normally from the installed system on the hard drive. Once booted, the disc can be read fine ...
3
votes
1answer
408 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 ...
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 ...
3
votes
1answer
353 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
682 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 ...
1
vote
3answers
974 views

Monitor remains grey after Apple logo during boot on Mac Pro

The Mac Pro here (2008 model) started acting up as of yesterday during booting - when I turn it on, I hear the typical sound, the Apple logo appears, it disappears.. and the monitor remains in that ...
1
vote
2answers
451 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 ...
1
vote
1answer
191 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 ...
1
vote
1answer
625 views

iMac wont startup and won't boot from CD

My 24" 3.06Ghz iMac will no longer fully boot. It constantly gives me the grey "Your machine needs to be restarted" half way through booting. At first I was able to boot into SuperUser mode and run an ...
0
votes
1answer
623 views

Restore MacBook AIr (mid 2011) partitions

I just messed up my partions on my harddisk. The situation: Installed windows 7 using bootcamp (NTFS). After that i wanted to ceate a shared partition, on wich both MAC OS and Windows can write. In ...
1
vote
1answer
135 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 ...
1
vote
2answers
13k 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 ...
0
votes
1answer
507 views

macbook with mac OS 10.5.- not booting past apple logo

For the past few days, my old macbook told me that it wa not charging, although the plug was plugged in. Unplugging it would just stop the computer from working, so the battery would really not ...
1
vote
2answers
1k views

Mac Mini not booting issue

I'm looking for some troubleshooting ideas on my mac mini failing to boot. The machine had been working fine until 3 days ago. I purchased the mini second hand from a friend ~ 4 months ago. The ...
0
votes
1answer
1k views

OSX Lion showing a white screen plus pointer prior to the desktop appearing

During boot-up, immediately after the Apple logo with the spinning progress wheel ends, rather than the desktop appear, I get a white screen with pointer in the top left for about 5 seconds. Then the ...
1
vote
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?
3
votes
1answer
6k 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?
1
vote
2answers
558 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 ...
4
votes
1answer
416 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 ...
0
votes
1answer
132 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
votes
1answer
643 views

No SIM Card installed error in iPhone 3g

My device iPhone 3G shown " "No SIM Card installed" 'insert a valid SIM With no PIN lock to activate iPhone' " It is in Emergency mode so please give me a solution if there is..? It comes when i am ...
0
votes
1answer
208 views

Can I boot from Snow Leopard DVD on 'normal' pc?

Just wondering if I have a copy of of snow leopard 10.6, if I put it in a typical pc that runs windows will it boot or do nothing?
2
votes
5answers
2k 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 ...
1
vote
1answer
1k views

Mac Mini won't boot. Is it the monitor or the Mac?

I just bought an old Mac Mini to start developing for iOS. The Mac Mini has a DVI port, so I connected it to my Dell 24" display which has a DVI connection. But it appears that my Mac wont boot. I ...
4
votes
1answer
891 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 ...
2
votes
2answers
622 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
3answers
356 views

Is there any way to see what OS X is doing when it's booting up when no chime is played? [duplicate]

Possible Duplicate: How can I see the system status during boot? 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 ...
3
votes
1answer
2k 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 ...
7
votes
2answers
576 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?
3
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 ...
0
votes
2answers
600 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 ...