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

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2
votes
2answers
14k views

MacBook Pro flashing question mark but I can't repair because hard disk not found in disk utility

Today my MacBook showed up some wheel of death and I waited and waited and then after a long time (10 minutes) decide to force shutdown. Ok, I know its not a good idea but I've done this before and ...
2
votes
1answer
5k views

How do I install Linux on an Intel iMac with no OS nor CD drive

What I want: Linux on an Intel iMac (Core Duo). What I have: An empty PC (17" Intel iMac) with broken CD drive. It's model A1173. This PC with Ubuntu 12.04 and an old Windows Vista partition. a ...
2
votes
1answer
483 views

Restored from Time Machine, no boot

I restored from a Time Machine backup onto a new HDD, this was using a disc with OS X Lion Upon boot, in verbose mode, the text hangs after initpool: offset = 0x08000000 size = 0x0800000. I would be ...
2
votes
2answers
715 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
622 views

iMac won't boot off of Mavericks USB when downgrading from Yosemite

I made the biggest mistake of my adult life and installed Yosemite without backing up my HDD. Fortunately, I do have most of my actual files and programs saved to my external HDD, but that leads to ...
2
votes
1answer
878 views

nvram boot-args to boot in target disk mode

I'd like a Mac to always boot in target disk mode. Similarly to setting sudo nvram boot-args="-v" which boots in verbose mode, I tried sudo nvram boot-args="-t" but to no avail. Any idea?
2
votes
2answers
2k views

How can I boot my dual-booted Mac back to OS X?

I have a MacBook Pro and run Windows XP on it too much however I cannot remember how I can open the MacBook Pro with OS X on instead of Windows XP. How can I boot back to OS X?
2
votes
1answer
41 views

Macbook boot troubleshooting

Since a system upgrade my macbook fails to boot properly: a loading bar appears, it takes about 15 minutes to get filled and then the system shuts down again. When booting in recovery mode, I tried ...
2
votes
1answer
1k views

How can I fix my GPT?

I just migrated from a 120 GB SSD drive to a 600 GB SSD drive. As I was lazy and didn't want to reinstall Mac OS X (Lion), I chose the following migration path: I created at GPT on the 600 GB target ...
2
votes
2answers
3k views

MacBook Pro (Lion) won't boot anymore

My MacBook Pro won't start up anymore. Here are the symptoms: displays only folder with question mark icon on startup when boot from Lion installation disk the disk utility program crashes. when i ...
2
votes
2answers
876 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 ...
2
votes
5answers
5k views

In OS X 10.6 how do you mount an AFP share at boot or before user login?

Is there a way to mount an AFP share at boot so it is accessible to the system without a user logged in? I would like to run scripts via SSH or as a daemon on boot that check files on my AFP share. ...
2
votes
1answer
119 views

Changed the mod for ~/.. directory by mistake, made it 744, can't boot anymore

I ran the following command by mistake: sudo chmod 744 ~/.. and I can't boot my macbook anymore, it freezes with the brown screen and ajax-style spin. What should I do to make it work normally ...
2
votes
1answer
6k views

No bootable device - insert boot disk and press any key

When I boot my Macbook Pro 13" Retina (running newest Mavericks), it is showing me this error: However! If I boot holding the ⌥ alt-key, it shows Mavericks as option. When I press ⌤ enter-key to ...
2
votes
1answer
30 views

FileVault and scheduled boot

After I have enabled FileVault the computer won't boot anymore at the scheduled time. Is it normal or has something gone wrong? If it is normal, are there any workarounds?
2
votes
1answer
2k views

unable to boot my Mac book after file vault 2 activation

after activation of file vault 2 I am unable to boot my computer, the apple sign turns into a prohibitory sign with a spinning circle beneath it , that spins forever. I really need the data on this ...
2
votes
2answers
5k views

Booting from USB to install Windows 7 on Macbook Pro, Early 2011

I used Bootcamp (5.0) to create a Windows 7 install USB. It successfully created the install USB but when I reboot the system and hold down the option-key to boot from the USB drive, the boot-loader ...
2
votes
1answer
2k views

MacBook Cannot Boot Up - Grey Screen

My MacBook won't boot past the grey screen (white unibody MacBook 15", Intel-based, dual core). I installed an illegal copy of Snow Leopard onto my Mac (as legal copies were not available in my ...
2
votes
2answers
1k views

After System Update last night, the system will not boot with IOPlatformExpert.cpp:1504 error

I have had Lion for a 2, 3 months on the iMac 27 inch purchased last October (2011). Last night I chose to update the system, and deselected iMoves update because it was 1GB, and chose only 4 ...
2
votes
1answer
974 views

MacBook Pro 2010 won't boot after EFI upgrade

I have updated my MacBook Pro (Core i5, early 2010) with system update to new EFI version, and now after startup it just shows the gray screen and doesen't react on keyboard (just plays the boot ...
2
votes
1answer
3k views

MacBook Pro appears to be completely dead and the charger is showing only a very dimmed green light

After doing a suspend I wasn't able to "revive" my early 2011 MacBook Pro. MBP does not respond to: power, long-power, SMC reset or even battery test button. the charger is showing a dimmed green ...
2
votes
1answer
863 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 ...
2
votes
3answers
2k views

MacBook Pro won't boot into safe mode or from DVD

Specs: MacBook Pro 7,1, 2.4gHz Intel Core 2 Duo, 4GB DDR3 RAM, 500GB HDD with Snow Leopard v10.6.7 I'm having a weird problem. I want to boot from the install disk to run Disk Utility because I'm ...
2
votes
3answers
392 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 ...
2
votes
1answer
2k views

How can I boot in “Safe Mode” with rEFIt

I would like to boot safe mode but I can't because of my rEFIt. Holding the Shift button at startup has no effect, I just get the rEFIt menu and OSX starts to boot normally. any ideas how to do it? ...
2
votes
1answer
31 views

Is there any way to not boot Finder at startup?

Is there a way in OS X to change the desktop from Finder to something else (for example KDE from Fink)? Basically, I want Finder to not boot up at startup, so no icons, no dock (but keep the menu ...
2
votes
1answer
654 views

Install Windows on MacBook Pro, without OS X

I installed Linux Mint on my 2006 MBP 15" this weekend before hearing that the system will not enter a compatible firmware mode for Linux/Windows without rEFIt or rEFInd installed first. Well, I do ...
2
votes
1answer
427 views

Verbose mode startup

I've been having sporadic issues where my Macbook Pro Retina hangs at startup. I started up in verbose mode and it always hangs at this message. AppleUSBMultitouchDriver::checkStatus - received ...
2
votes
1answer
527 views

Can only boot to Windows 7, no OS

Back in late 2010, when I first got my MacBook Air, I followed the instructions at http://howto.cnet.com/8301-11310_39-20020513-285/install-win-7-on-macbook-air-from-a-usb-drive/ to install Windows 7 ...
2
votes
1answer
8k views

Install Mavericks from usb drive on new HDD

I replaced my old HDD with a new one. Also I created a bootable usb flash (8GB Toshiba) with Mavericks using DiskMaker X. I restared Mac and pressed Option key, but I see no option to boot from. I ...
2
votes
1answer
2k views

My MacBook died and won't start anymore

I have a 6 year old MacBook. It suddenly died last Sunday. When I started it the battery was charged to 100% - some minutes later it was at approximately 20%. Then the screen suddenly turned black and ...
2
votes
1answer
1k views

Boot iMac G5 17 iSight from external USB optical drive?

Is it possible to boot iMac from external USB CD-ROM?
2
votes
1answer
42 views

How to enable ssh proxy every time I resume desktop

I start ssh proxy by a command similar to the following when I login to the desktop. ssh -N awsproxy.vpc Also, I need to type this every single time I resume my desktop from sleep mode. Can you ...
2
votes
3answers
952 views

Understanding how safe boot fixed a boot problem

Background My friend asked me to look at her early 2011 Mac Mini with OS X 10.8.3. She said that: she installed software updates she couldn't remember which updates were installed when the Mac ...
2
votes
1answer
601 views

Apple powerbook G4 17" Trying to install Linux

I believe followed the directions on how to create a bootable USB drive from the Ubuntu website. My question is how can I get my Powerbook to boot from the USB drive? I tried doing the ...
2
votes
1answer
344 views

putting windows 7 on a flash drive using bootcamp

I'm thinking of changing to a new MacBook Pro 15" (the one with an 256GB SSD), 256GB is enough for my files and OS, but I also want to have about 50GB for a Windows 7 (BootCamp) partition. So, taking ...
2
votes
1answer
2k views

2008 iMac Running OS X 10.8.2 Won't Boot

My 2008 iMac is having trouble booting—it never gets past the initial grey screen with the Apple logo and spinner. After letting it try to boot (spinner working) for upwards of 10 minutes, I'll get ...
2
votes
1answer
228 views

Has iOS Always had Secure Boot?

In Apple's recent iOS Security paper here http://images.apple.com/ipad/business/docs/iOS_Security_May12.pdf They speak about the Secure Boot Chain, my question is has iPhones/iPods/iPads always had ...
2
votes
2answers
1k views

How to distinguish multiple OS X installations from each other in the bootloader?

I read with interest this post about setting up a flash drive with multiple OS X installers. It confirms what I've suspected by my tests with just one OS (Lion). However, a question occurred to me: ...
2
votes
1answer
191 views

Using OS X Lion on a main SL mac - use USB key instead of partition?

I need some advice. I am new and non-techy so please could you help me on a simplified level. I am running Snow Leopard on my Mac which I am happy with. I will upgrade to Mountain Lion later but I ...
2
votes
1answer
6k views

Stop-sign after boot and “Still waiting for root device”

Need some advice regarding a problem starting up my Mac Mini (mid 2011). The other day I was browsing websites when the machine froze with the spinning beachball. So I was forced to power off/on my ...
2
votes
1answer
2k views

What can slow down/How can I speed up the pre-kernel boot steps?

I've got a late 2007 Macbook Pro with 4 GB of RAM and an SSD. I am running Boot Camp and have an OptiBay. I have partitioned the SSD and secondary drive to devote half of each to Lion and half to ...
2
votes
3answers
7k views

Boot from USB on MacBook 1.1 (early 2007)

I’m trying to install Windows 8 from USB on my MacBook 1.1 (early 2007). I have tried booting using rEFIt (on 10.6): Partition my USB key as MBR: the Windows 8 logo fish stays stuck forever. ...
2
votes
1answer
799 views

Reboots hang. Cold Starts Boot on iMac 27" i7 (Mid 2010)

I've been having a problem with my iMac i7 (mid 2010) for quite awhile. Any kind of restart from a software update, or a user selected restart, causing the iMac to get stuck on the restart gray screen ...
2
votes
1answer
964 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 ...
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, ...
2
votes
1answer
311 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 ...
2
votes
2answers
219 views

Suppress load screen when using rEFIt?

I have rEFIt installed. Is there any way to choose a default OS to launch which would in turn suppress the load screen from showing up when you start up the computer? I'm looking for a way to make ...
2
votes
1answer
670 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 ...