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

learn more… | top users | synonyms

0
votes
1answer
59 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 ...
0
votes
1answer
493 views

Can't boot from Snow Leopard DVD

I bought a new hard drive for my 2011 MacBook Pro and did the following steps: Backup using Time Machine Replaced the hard drive Put in a Snow Leopard DVD (10.6 from ~2009) Booted holding down the c ...
0
votes
0answers
144 views

2010 MacBook Pro won't boot

I'm having an issue with my 2010 MacBook Pro. It started crashing a lot a couple of months ago, eventually even with kernel panics. Sometimes after a crash, during the next boot, it would display a ...
3
votes
3answers
4k views

Logging out and in on OS X takes 4-5 minutes?

I've got a 3.4 GHz i7 iMac (8 cores) with 24 GB of RAM. (2 16 GB chips plus 2 4 GB chips.) I know this amount of RAM is "officially unsupported" which is why I mention it. Lately logging out (to ...
1
vote
1answer
622 views

How can I boot my MBP into normal mode despite shift key being broken (and on)?

I recently went to the Apple store with my laptop because it would only boot into safe mode and would not accept my password. While there, they said some liquid ruined something in the inside of my ...
0
votes
0answers
382 views

iMac does not show bootable USB drive on boot menu

I downloaded the Linux USB Image of memtest86 and used dd to get the image on a USB flash drive. Whenever I used it on an iMac Late 2006 (running SL) or the newest Macbook Air 13'' (running ML) the ...
3
votes
3answers
2k views

Installation stuck at grey boot screen on Macbook Pro 4,1 (Early 2008)

I would appreciate any help you guys can give me since I would really like to upgrade my laptop to Mountain Lion. Computer: Macbook Pro 17" 4,1 (Early 2008) RAM: 4 GB RAM Hard drive: 128 SSD Hard ...
0
votes
2answers
896 views

Installing windows on late 2009 iMac 27"

I've sucessfully installed Win 7 x64 twice on my imac before. However the 2009 iMacs had faulty HDD, I had it replaced and after that I have trouble installing windows. I know about the display ...
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 ...
2
votes
3answers
789 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 ...
1
vote
3answers
1k views

How to enter boot menu without command key?

My Macbook air has a keyboard issue, the Z key does not work except upon startup where it becomes stuck for several seconds. This interferes with opening the boot menu on startup, because it detects ...
0
votes
1answer
2k views

Mac Pro: Kernel panic during HDD boot and DVD boot

I have a 2007 Mac Pro (OS X Tiger 10.4.11) that cannot boot up anymore since a few days. I see the grey screen with the apple logo and the rotating circle. After a minute or so I get a kernel panic. ...
0
votes
1answer
246 views

What is the simplest way to dual-boot linux?

I am looking for the most straightforward way (both in initial setup and in maintenance) to set up a second partition on an OS X machine for (either) Debian or Ubuntu. I won't be running any other ...
3
votes
2answers
3k views

Macbook Air not waking up from Suspend/Sleep with rEFInd boot manager installed

Having installed both rEFInd 0.6.10 (updated to 0.6.11) via its install.sh and Ubuntu 13.04 on another partition I can now choose on a MacBook Air to boot either MacOS or Linux. When running MacOS ...
1
vote
1answer
141 views

Boot into Safari-only mode in Mountain Lion?

In Lion, you used to be able to boot into a Safari-only mode. Where did that go in Mountain Lion?
1
vote
2answers
4k views

Macbookpro can't recognize bootable usb at boot time?

I have an old macbookpro: Model Name: MacBook Pro Model Identifier: MacBookPro6,2 Processor Name: Intel Core i5 Processor Speed: 2.53 GHz Boot ROM Version: MBP61.0057.B0F I created a ...
0
votes
2answers
3k views

Macbook pro boot with kernel panic - can't perform kext scan

I was trying to swap command and option key for my external keyboard following the instruction in http://hints.macworld.com/article.php?story=20110529094802391. When I'm done with change and I ...
0
votes
1answer
772 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
votes
1answer
711 views

Can I “restore” an iso image to my hdd to be bootable?

I removed my superdrive a while back but now I want to install a linux partition on my macbook. I installed rEFInd as my boot manager but now I need to boot into the arch linux iso. Normally I would ...
1
vote
1answer
3k views

restore Mac OS Mountain Lion to factory settings without discs or time machine backups

I installed XCode 3 on Mac OS Mountain Lion 10.8 and now I am getting the Apple BSODs. Can I do a system restore without having the discs as I seem to have nothing to use, also I have no Time Machine ...
0
votes
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 ...
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 ...
0
votes
1answer
110 views

MacBook Pro Sluggish boot

My MacBookPro has been extremely slow at the startup. Is there something similar to Window's System Registry that I can see all the boot files and uncheck what I don't need? I'm running Mac OS X ...
0
votes
3answers
2k views

Fix slow startup after utility disk repair on a SSD

I have a 250Gb Samsung SSD 840 series with Trim support enabled installed on a mid-2009 13" Macbook pro running Snow Leopard (10.6.8, 2.26GHz, 8Gb of RAM) and I experience extremely slow startup after ...
1
vote
1answer
9k views

How do I get into boot options with a non-mac keyboard?

I boot my mac mini, hold down alt on my non-mac keyboard, but it does not go to boot options. How do I get to boot options with a non-mac keyboard then?
-1
votes
2answers
2k views

iPhone 4 Restore loop 6.1.2

OK so the other day I tried to restore my iPhone while it was jail broken on ios 6.1.2. Well it was a terrible idea.... NEVER DO IT. any way i have worked on trying to restore it back to normal but it ...
0
votes
1answer
2k views

Dmesg shows no timestamp

The sudo dmesg command works fine, but shows no timestamp. Is there any way to get it to show the timestamps as well?
4
votes
1answer
580 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 ...
0
votes
1answer
2k views

MacBook Pro only stays on for less than a minute

This morning when I woke up my computer it turned off itself. Now it won't stay on for more than a couple minutes. The computer will boot up normally, but soon it turns off again. When it turns off, I ...
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 ...
2
votes
1answer
223 views

FreeBSD Install DVD corrupted my Mac OS X harddisk

Recently, I have tried a FreeBSD 7.4 i386 Install DVD, just to see some screens of FreeBSD on my Mac mini Intel 2006. I was going to see (to remember) just several dialog screen of and perhaps I would ...
2
votes
0answers
251 views

How to 'startx' from Single User Mode?

I usually run dwm inside Xquartz on OS X Mountain Lion 10.8. But is there a way to boot into Safe Mode (or a console), then startx or xinit, skipping Aqua? I'd like to boot directly into X11.
1
vote
2answers
2k views

Resetting MBR on iMac

I installed Ubuntu on my iMac (partially successfully) I had rEFIT installed but it did not recognize the Ubuntu installation. I removed the partition and rEFIT and now when I attempt to install ...
0
votes
1answer
629 views

MacBook Pro (2011) bricked after firmware 1.7 update

I allowed AppStore to apply the newest firmware update to my MacBook Pro, which seemed to work fine, until the final restart. At this point, the machine just shut down. I waited for quite a while, ...
3
votes
1answer
314 views

Mac Mini Server running Mountain Lion (10.8.2) is freezing during boot (last line: IPv6 packet filtering initialized)

Starting in verbose mode (Cmd+V), the last line I see on the console is: IPv6 packet filtering initialized, default to accept, logging disabled This happens regardless of having an ethernet cable ...
1
vote
1answer
2k views

Formatted a Bootcamped drive as a dynamic disk, now can't boot to either Mac or Windows

I was trying to create an extra partition to get a file from the Windows side of my Macbook Air to the Mac side, and I accidentally made the disk dynamic without realizing it. I am now unable to boot ...
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 ...
1
vote
0answers
39 views

Lion crashes on first reboot attempt, is fine on second reboot

I'm having a weird issue with Lion on 2 different machines (2008 Mac Pro, 2011 15 inch Macbook Pro). The first machine was upgraded through several OS versions to Lion, the second came with Lion ...
1
vote
2answers
354 views

Notification area icons are sometimes invisible in Windows 7 (Boot Camp)

For some reason, sometimes my notification area icons are invisible in Windows 7 64-bit (Boot Camp, on an iMac mid-2010), as seen in this screenshot. Clicking on an invisible item does nothing. ...
1
vote
0answers
468 views

How do I unfreeze my iPod Nano 4th Gen?

tl;dr -- My iPod hangs on the boot screen (black background, silver apple logo). When I try to restore it (on both my Virtual Windows XP and on a Mac laptop), it'll restore fine, but when it reboots ...
3
votes
1answer
90 views

How to diagnose long start up

My Macbook Pro (OSX 10.8.2) is taking a long time to settle down after booting. I am guessing there are some background processes/apps that are taking a while to start and hogging resources. What is ...
0
votes
0answers
20 views

Apps that were open when I restart still open on startup even though I disabled that? [duplicate]

I'm on an iMac mid-2010 with OS X Mountain Lion. I disabled the feature that reopens windows the next time I startup my computer after a restart, but for some reason the windows that I had open when ...
-3
votes
1answer
282 views

Howto avoid autostart of iOS app?

I use an iOS app that autostarts whenever I reboot the phone. How can I disable that ?
1
vote
1answer
2k views

Can't boot MacBook Pro 13" (mid 2010)

The problem occurred after installing the update SMC 1.6 on Apple - OS X Mountain Lion: First for a long time was a white screen and noisy cooler After the system battery icon was crossed out and ...
0
votes
1answer
282 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 ...
0
votes
2answers
15k views

What are next steps when fsck reports “could not be repaired after 3 attempts”?

My Mac Book Pro 13.-" doesn´t get past the grey booting screen with the apple and the spinning wheel (The loading bar appears but when it´s done nothing happens) I have 220 GB in one single ...
0
votes
1answer
96 views

MacBook Air - random start/wake up times

I have a 3yo MacBook Air running Lion. When I open it to start using it again it seems to sometimes have trouble 'waking up'. Sometimes this is instantaneous, sometimes I get a blank screen for 30 ...
1
vote
1answer
3k views

Computer starts up to gray screen, in recoevery mode getting "Open Error 5: Input/Output error on System/CoreServcices/ManagedClient.app/*

Computer starts up to gray screen, in recoevery mode getting "Open Error 5: Input/Output error on System/CoreServcices/ManagedClient.app/* My computer turned to sludge, and I hit the power button and ...
1
vote
0answers
446 views

Trying to install Ubuntu on a Macbook with a new hard drive and no OSX

The hard drive of my Macbook failed recently. After installing a new hard drive I would like to use Ubuntu as the operating system, not Mac OS x. I burned a Ubuntu .iso to a disc and when I power up ...
1
vote
2answers
1k views

Understanding kernel panic error log

My MacBook Pro worked all normal when all of a sudden it went black. It tried to reboot itself but immediately produced a kernel panic. From then on I was never able to boot again. I could only enter ...