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

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4
votes
3answers
2k 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.
1
vote
1answer
322 views

Restoring a Boot Camp image with Windows 7 and making it bootable?

I have an image of Boot Camp with Windows 7, which was created by Carbon Copy Cleaner. I didn't realize that the image wasn't bootable until I had already deleted the partition. I'd like to restore ...
3
votes
4answers
42k 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 ...
2
votes
1answer
1k 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
220 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
5answers
15k 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 ...
2
votes
1answer
1k views

How can I install Debian on a PowerBook G3 with Mac OS 9.2?

Today I started installing Debian Linux on an old Macintosh PowerBook G3 with Mac OS 9.2. After a long time of backing up old documents I erased the whole disk. At the end I just want Debian ...
2
votes
4answers
2k views

Does not boot (endless spinning)

A friend of mine has forgot her password to a newly bought Macbook Pro, Lion. I've reset the password like described here by booting to single-user mode and deleting /var/db/.AppleSetupDone The Mac ...
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 ...
1
vote
2answers
2k views

Jailbroken iPhone stuck on boot screen

I tried to reload Cydia, which stopped working on my jailbroken iPhone 4. I downloaded "Redsnow" and "Ipsw 4.3.2", which worked, until I went to use and downloaded an app with Cydia. I did not ...
1
vote
1answer
497 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 ...
0
votes
2answers
8k 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 ...
0
votes
2answers
1k 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, ...
1
vote
2answers
446 views

Trouble with Memtest86 4.0a on 15" MacBook Pro

I have a 15" MacBook Pro late 2011 (MacBookPro8,2) It has a 2.4Ghz Core i7 CPU and 4GB of stock RAM. I'm trying to run Memtest86 4.0a from boot (Memtest86+ does not work.) After about 5 seconds into ...
1
vote
1answer
2k 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?
1
vote
1answer
4k 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 ...
1
vote
4answers
4k views

Can I create a boot disk for 10.6 or 10.7 on a PC (to be used on a Mac?)

I have a Macbook Pro that had a hard drive failure, I've replaced the hard drive but I don't have a boot disk of any kind. I could just order a Snow Leopard DVD, but I have to wait a few days for ...
1
vote
1answer
1k views

iPhone 3GS switches off randomly after update to 5.0.1

I bought a used iPhone 3GS and the owner claims it worked fine with iOS 4.3.5. When I came home, I reset all content and settings on iPhone. Did I know that doing the reset would force me to upgrade ...
1
vote
2answers
2k views

MacBook Pro Mid 2009 does not boot without resetting system management control (SMC)

Today i started my macbook pro and after some seconds it stopped working (just turned). I was not able to start it again. After some apple support search I found a page that described how to reset the ...
6
votes
1answer
5k 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 ...
1
vote
1answer
121 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
30k 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, ...
3
votes
2answers
336 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 ...
1
vote
1answer
186 views

Help with kernel boot message

I recently turned on my iMac (White intel) to find it wouldn't boot. Running the boot in verbose mode I get the following message: Does anyone know what this means? Is it a hard disk error?
0
votes
2answers
382 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 ...
3
votes
1answer
412 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
3k 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 ...
4
votes
3answers
2k 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 ...
3
votes
1answer
472 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 ...
1
vote
4answers
21k 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 ...
6
votes
4answers
470 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
7k views

How do I boot my MacBook Air running Lion in safe mode?

I follow the instructions in http://support.apple.com/kb/ht1455 to boot in Safe Mode, but it appears something different happens with Lion. After holding the shift key when hearing the startup tone, ...
3
votes
3answers
968 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
996 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 ...
0
votes
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 ...
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 ...
1
vote
3answers
2k 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
578 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 ...
0
votes
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 ...
1
vote
3answers
10k views

Troubleshooting MacBook Air boot issues

I have a late-2010 MacBook Air (11inch, 3,1), running Snow Leopard. I hadn't run software update in a month or two, so I plugged it into the wall and ran software update last night. Unfortunately, ...
1
vote
1answer
200 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 ...
3
votes
3answers
6k 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
2answers
895 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 ...
0
votes
1answer
813 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
137 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 ...
3
votes
2answers
3k views

How can I fix permission issue when I cannot start Mac OS X?

I was creating a guest account and to prevent it from accessing the Macintosh HD as in other applications and stuff I assigned it as in "No Access" When I switched to the guest account everything ...
1
vote
2answers
24k 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 ...
2
votes
1answer
325 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 ...
0
votes
1answer
574 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 ...