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

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How to make a bootable (encrypted) copy in an external drive from a FileVault 2 encrypted boot partition

I configured my MacbookPro (Retina) as follows: /dev/disk0 (GUID partition scheme) EFI 200 MiB Apple CoreStorage 128 GiB <- FileVault 2 encrypted Apple Boot 650 MiB <- ...
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17 views

Create Mavericks bootable USB under Windows for MacBook Air [duplicate]

After experiments with my macbook air, I have clean hdd drive without any OS on it completely (nor recovery partitions). How can I create bootable usb flash drive to install mavericks back to my ...
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112 views

Mac alternative boot loader for booting legacy OS from USB

I am trying to install Windows 7 on my MacBook as a dual boot setup. I have a MacBook 7,1 running Mavericks. I have replaced the DVD drive with a SSD (now have 2 internal drives) so cannot use a ...
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15 views

Used DiskMaker to create bootable USB, got error 10600, USB won't mount

I tried creating a bootable USB for Mavericks. Downloaded and used DiskMaker X. Got an error, -10660, and the app closed. Now my Mac won't mount (or recognize) the USB drive. It doesn't show up in ...
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1answer
107 views

How do I create a Mac bootable USB drive using Windows?

My MBA 2012 with OS X 10.9.4 Mavericks won't boot anymore - it simply freezes after the initial jingle. I already tried resetting NVRAM and SMC, but to no avail. I don't have any time machine backups. ...
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1answer
43 views

Why doesn't my MacBook recognize the original HD any longer?

I replaced the stock hd with a samsung ssd (840) about 18 months ago. It died last week. I tried putting the original HD back in and the computer won't recognize it. Even when I hold down the option ...
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1answer
51 views

My mac would not boot so I formatted the drive and now it has no OS

So there is a whole other backstory as to why my computer would not boot and why I needed to format the drive. The only thing I need to know is how can I install an OS to my computer. I tried CMD-R, ...
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1answer
23 views

Mac pro 2,1 boots up but won't restart?

I am very confused with this problem. So I just recently purchased a 8 core 3.0ghz Mac Pro 2,1 and I upgraded the memory with 16gbs of hynix ram, and everything worked great the computer was reading ...
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1answer
77 views

Macbook won't boot

I have a Macbook pro 13" that won't boot up. I searched for solutions online and the issue seemed battery related to me. I opened the back panel of my Mac and took out the RAM and placed it back. ...
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1answer
25 views

Mac mini won´t boot up

I have a Mac mini that fell from a desk, my kid was playing aroung and it hit the floor, I picked it up and it stared up but when the Apple logo comes up the little cricle appears and thats it, it ...
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15 views

Bootup error on every boot method, HD, Recovery drive, External HD system and USB?

Bootup error on every boot method, HD, Recovery drive, External HD system and USB??? I get the following error on but, white screen apple logo, then error and keeps restarting and starting cycle ...
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79 views

After strange startup issues TimeMachine/Migration not working properly, some data seems to be lost

since I couldn't find a solution for this problem I hope somebody of you may have one: When I was in holiday 2 weeks ago and repeatedly tried to boot my MacBook Pro 15" (2012, DIY Fusion, FileVault 2 ...
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2answers
2k views

No bootable device found ( Install windows on Mac )

I'm owning a macbook pro 13 inch mid 2009 and a USB thumb drive Kingston DataTraveler 100G3 16 GB. I successfully installed Windows 7 on my Mac using Bootcamp ( with a little trick to enable "Creat a ...
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17 views

Installing Mac OS 10.6 on PC [duplicate]

I need to install Mac OS 10.6 on my laptop using Windows. So I have an .ISO file with Snow Leopard and USB drive,i try to create bootable USB drive via PowerISO but later,when i try to boot from USB ...
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1answer
125 views

MacBook Pro doesnt boot after systemupdate / repairing volume doesnt work

i have a problem with my MacBook Pro. I installed a Systemupdate, reboot and then i had a loading screen which loads a long time. Then i started the mac in verbose mode and there is... hfs: mounted ...
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1answer
235 views

Mac Pro hangs at startup showing white screen with spinning pie wheel

MacPro 1,1; lion? startup hard drive failed (with loud buzzing). Removed bad drive, installed replacement, inserted Lion USB drive, verified new drive using the Lion usb drive, started installation ...
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279 views

After upgrade Lion to Mavericks, can't run Windows 7 on boot camp because is hidden/disabled

The question is about iMac (21.5-inch, Mid 2011) It was with Lion, there was a Windows 7 (32bit) partition created by Boot Camp v4. So, I made the upgrade to Mavericks (no clean install), after this ...
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1answer
50 views

Debian won't book on MacBook Pro

I erased the entire content of my MacBook Pro when installing debian. Now, the laptop will not boot into Linux. When I insert USB again it will start installation again. I even selected bootable ...
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0answers
12 views

How to boot in Windows by default? [duplicate]

I installed windows 8 on a bootcamp partition. When the computers shut off because the battery is low or because of windows update, it will restart in Maverik (unless I notice in time to press alt ...
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79 views

2 Mac Mini Server in a restored RAID 1 config and question mark folder at boot

We have two identical Mac Mini servers (let's call them A and B) running OS X Lion with two 500 Gb HD. Using a Thunderbolt cable, a RAID 1 matrix was creating using three HDs (2 from A, 1 from B) with ...
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23 views

Ubuntu boot not available at startup

I have partitioned my internal hard drive and installed Mac OS X Mountain Lion on one partition and Ubuntu 14.04 Trusty Tahr on the other. The installation was done via alt/option key at startup ... ...
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1answer
23 views

rEFIt defaulting to 32bit kernel

rEFIt is defaulting to the 32bit kernel of OS X which will not boot and will show this error message: at boot I have to press F2 then manually select the 64bit kernel. How do I change the default ...
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2answers
30 views

How old would a Macbook Pro need to be in order to have a non-64bit Intel processor?

My friend has a MBP that was bought 2 or 3 years ago, and I need to help him prepare some software to run. What are the chances he won't be able to boot from a 64bit Linux live USB flash drive?
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735 views

iMac 27″ boots successfully to safe mode only

I can only boot my iMac 27″ (end of 2009) in safe mode. The problem started in Lion, when the computer suddenly froze. All I can get is the grey screen, which turns black after a while. I upgraded ...
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39 views

Macbook Pro 2008 doesn't boot

I'm having a problem with my Macbook Pro from 2008. If i boot up the Apple logo with the grey background is staying and a stuck spinner. BUT I can make sound with my mac, while it's stuck on the logo. ...
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1answer
832 views

I can't boot into Windows 7 on Boot Camp

I have a mid-2009 MBP. A couple of years ago I swapped out the optical drive for an SSD, made the original hard drive a Boot Camp partition and installed Windows 7 on it. It has been a brilliant "best ...
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1answer
79 views

How to create a bootable Mavericks dvd (double layer)?

my macbook's hard-drive is dead so i bought a new one and i'm looking for a way to install os X on it. Is it possible to download mavericks on an imac running 10.6.8 and create a bootable dvd ? ...
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0answers
20 views

Debian on air 3.2

I installed Debian on my macbook air a week ago after first going through the http://www.rodsbooks.com/refind/installing.html#osx installation guide. The installation of Debian worked fine and i ran ...
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1answer
85 views

How to turn off boot up chime on late 2013 mac pro?

I use my new late 2013 Mac Pro in Windows only. But, I'd like to disable the bootup chime. How can I do this?
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268 views

Compressed windows boot manager on dual boot Macbook and windows 7

I have never posted here before so I hope this is the right place to ask this question. So I'm helping my friend with his computer right now, I should mention that I am not a user of OS X on a ...
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1answer
37 views

PowerBook G4 cannot boot up and doesn't install any versions

My school IT guy tried helping me with an issue with my old PowerBook G4. I just got it from my friend because he had no use for it and he didn't know the password. I tried resetting the password and ...
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100 views

Efi Boot appears on BootCamp page

I'm new in this forum and I hope someone has an answer for my issue. Since yesterday my mac-book pro won't boot in Os X I have boot-camp on it If I turn on normally the apple logo, loading circle ...
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1answer
63 views

Mid 2010 Macbook Pro goes into an unresponsive hibernate state for unpredictable amounts of time

When my macbook is in standby, and the battery dies it sometimes goes into an unresponsive state in which (after charging) it won't turn on. The power button has no effect, even in combination with ...
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1answer
164 views

iPhone 4s stuck at apple logo in boot

My iPhone 4s 64GB was recently updated to iOS7. The battery was completely empty so I had to charge it. However, the iPhone does not boot anymore and it's stuck at the Apple Logo. I went to a ...
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68 views

Mac not booting. Attempts for SU mode and recovery lead to black screen

My macbook pro was not booting. The screen seems to freeze on the Apple logo screen. Any attempts to enter the SU mode or to recover either from local or from Internet lead to a black screen. Any ...
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0answers
1k views

Mavericks - Restore Damaged Recovery HD Partition without Reinstalling OS X

Recently, I tried to boot into the Recovery HD partition in order to perform some basic verify/repair operations using Disk Utility, only to find that my Recovery HD partition will not boot. Instead, ...
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216 views

Install Ubuntu 13.10 on external firewire hard drive

I think I installed Ubuntu 13.10 on my external firewire hard drive (LaCie Rugged Triple) successfully, but I don't see any way to boot it. How can I solve this? I already have Mac OS X 10.7, Lion, ...
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1answer
101 views

Cannot boot Mac Mini with stripped RAID -fsck hangs

Today we coould not get one of our machines running. After several hours of doing the 'standard' tasks like fixing permissions etc. we hit a dead end. Here's what's going on: Machine starts, we can ...
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682 views

Screen backlight does not turn on during bootup, but turns on when accessing recovery partition

I have a late-2011 15" MacBook Pro running Mavericks. I normally don't reboot my computer and can leave it logged in for days on end. I decided to reboot my computer and when it was booting, the ...
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0answers
78 views

How to restore /dev/rdisk1?

Accidentally when installing third-party distribution on to the stick I mixed up paths and instead of /dev/rdisk2 used /dev/rdisk1 and now my OS X do not load. Is it possible somehow to restore boot? ...
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0answers
3k views

OS X kernel panic on boot with “unable to find driver for this platform”

I updated the latest version of OS X yesterday. When I updated this it asked me to restart and displayed "unexpected error" and asked to restart again. When I restarted it the following screen showed ...
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0answers
111 views

Mid-2012 Macbook Air, boot directly from MBR not from GPT

Ok, I have an end-goal of using rEFInd, windows, and linux installed on my macbook air. (info here: http://support.apple.com/kb/SP670 ) Windows cannot be installed onto a GPT partition, so I'll have ...
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0answers
979 views

Boot from USB iBook G4 Power PC

I recently got an old iBook G4 (as many of you might have noticed with all of my recent questions :D) and I wanted to install Ubuntu via USB (the iso doesn't fit on a CD and the iBook doesn't read ...
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0answers
39 views

iPhone 4 doesn't power on, but is recognised by PC

My fiancée's iPhone 4 doesn't seem to want to boot. I originally thought it was just not charging, but my PC recognises it when I plug it in via USB. Might just be that the USB logic (e.g. FTDI) ...
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242 views

How can I clear the kernel extension caches while using FileVault 2?

I have the same problem as this user, Air + Lion : plug in USB, keyboard/pad stop working , where the built-in keyboard and trackpad on my MacBook Pro stop working (and drop out of the USB devices ...
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0answers
221 views

Why doesn't the boot menu show my USB drive with the Mavericks installer?

I have downloaded Mavericks and through Disk Utility installed it to a USB drive. When I boot my new Mac, I only see the Recovery drive. Don't have the original Macintosh HD and doesn't find the USB ...
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1answer
782 views

Serious Boot / Sleep Problems

Two days ays ago I closed the lid of my macbook pre for the night as I have done for the last 2.5 years but when I opened the lid in the morning the screen didn't show. It seemed to be 'alive' (ish) ...
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1answer
308 views

Is it possible to use FileVault 2 on a non-primary boot partition? (Dual-boot setup)

To be more specific yet still brief, I'm looking to use Filevault 2's entire partition encryption, for a partition other than my primary boot partition. Ideally, I want to have 2, or in the future, ...
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1answer
314 views

Shift key damaged how to disable it at boot?

I recently spilled water on my computers keyboard, and as a result the left shift key seems to be stuck in the on position. This means that the system always boots into safe boot unless I hold down ...
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63 views

USB Keybard not activated at boot

I've got a Mac Mini with Mavericks with a WASD Keyboard v2 (ISO layout) attached. When I boot the system the keyboard is somehow not recognized by the OS (i.e., I type and nothing happens). The ...