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

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0
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1answer
76 views

Long boot and shutdown time

I own a MBP 17" model with i7, 4GB RAM, 750GB HDD. It is early 2011 model. I upgraded to OS X 10.9 when it was released. Since then the boot and shutdown time has been extended greatly. What used to ...
2
votes
1answer
3k views

How to create USB Ubuntu boot disk in OS X so that it boots on *non-Apple* computer?

While this seems like a straight forward task, the few methods I've tried so far don't create a USB device that my Dell computer will recognize as a valid bootable USB drive. Here's what I've tried ...
1
vote
1answer
114 views

MacBook will read USB drives with no problem, but will not see the USB drive as boot drive

I am trying to install OS X Lion on a Macbook 4,1 which I've upgraded to 4 GB of RAM. It should support this OS, however I cannot get my Mac to see the USB drive as a bootable option. It's a SANDISK ...
-3
votes
1answer
317 views

How can OS X be installed from ISO file on a Mac?

How can OS X be installed from an ISO file on a Mac? I have downloaded OS X Mountain Lion ISO file (4.42GB) as my MacBook fails to boot and I want to do a fresh installation.
0
votes
0answers
586 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 ...
0
votes
0answers
71 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? ...
15
votes
2answers
30k views

How do I set OS X to boot by default?

I set Windows 7 to my Boot Camp. Windows 7 starts now by default in the normal boot. However, I want that OSX boots by default and Windows 7 only as I press ALT and then select it. How can you set ...
0
votes
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 ...
2
votes
0answers
2k views

MacBook does not list my bootable USB stick in the boot menu

I made a bootable usb stick with OSX Lion. When starting up my MacMini (which has OSX Mountain Lion installed) while holding option, the USB stick is listed and I can boot from it. But I want to use ...
2
votes
0answers
451 views

Locked Hard Drive

For some reason a recent reboot resulted in a startup screen with a circle with a slash icon instead of the regular Apple icon. What I tried: Using internet Recovery I used disk utility to fix ...
6
votes
4answers
13k views

Can you boot a MacBook Air from a USB 3 external hard drive?

Macs have long been able to boot from external FireWire hard drives. I don’t think they’ve been able to boot from external USB 2 drives though. The new MacBook Air (2012) has USB 3.0. Can it boot ...
5
votes
1answer
3k 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 ...
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 ...
4
votes
1answer
428 views

Apple recovery partition possibly creating problems in Ubuntu

Before reading, it may help to know I have a 13" Macbook Pro (model 7,1. Mid-2010). Recently, the HFS+ filesystem on my OSX became corrupt and after many trials and errors, it was clear I was going ...
0
votes
0answers
106 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 ...
1
vote
0answers
334 views

Set EFI to boot Windows via (U)EFI one time

On my late 2012 Mac Mini, I have installed both Mac OS X Mavericks (with FileVault) and Windows 8.1 (natively, not via Bootcamp): /dev/disk0 #: TYPE NAME ...
0
votes
0answers
912 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 ...
0
votes
2answers
243 views

Newly-upgraded Mavericks machine hangs on startup

I just upgraded to Mavericks on my 2.8 quad desktop, and now it won't fully boot. It gets to the Apple logo, then hangs. I tried safe boot but got the same result. Where to next?
0
votes
1answer
684 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 ...
2
votes
2answers
209 views

My MBP will not startup properly!

I have a Macbook Pro 2008 aluminum 15-inch that runs on OSX snow leopard. Whenever I turn on my laptop, it boots up (apple logo and spinning wheel appears), and then goes into a loop of blue screens. ...
1
vote
1answer
74 views

Start a process at boot

I need dnsmasq to run at boot on Mavericks. I've got dnsmasq working fine. I've created a .plist file in /Library/LaunchDaemons with the following contents: <?xml version="1.0" ...
0
votes
0answers
38 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) ...
13
votes
4answers
77k views

How to install OSX Mavericks in VirtualBox

I have been trying to use Hackboot to install OSX Mavericks in VirtualBox, and using an ISO image created by following the steps at How to create bootable ISO for OS X Mavericks The steps I have ...
1
vote
1answer
1k views

Partition corruption, still can see files in single user mode, would like to retrieve files

The problem started after forcing the mac to shutdown. Since then, when trying to boot, it stays stuck at the grey apple with spinning wheel. I've tried a few generic things to be able to access my ...
0
votes
0answers
236 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 ...
1
vote
0answers
134 views

WD My Book for Mac External HD won't boot any more

I bought a 3T WD My Book for Mac external HD and use it with my iMac with OSX 10.8.5. I partitioned it into 5 partitions. There are three 30G partitions and two larger ones. The largest is used as a ...
0
votes
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 ...
1
vote
0answers
499 views

MacBook Pro will boot only after a SMC reset

I replaced the hard drive in my MacBook Pro (mid-2010) with a SSD one. I installed Mac OS X 10.9. At first the installer wasn't able to find the new SSD drive, because of a error: "SerialATAPI device ...
1
vote
1answer
60 views

Why won't my Mac start?

I have a MacBook Pro 13 inch and something really weird happened. Earlier today it worked perfectly fine, a few hourslater I tried to turn it on and it was stuck at the startup. It has a little ...
1
vote
0answers
211 views

Cannot boot from external DVD

I have changed my internal DVD with Crucial m4 SSD and I have put the DVD in to an external case. I'm trying to update the SSD firmware and install Mavericks but I can't boot anything except MAC OS ...
3
votes
1answer
3k views

Can I boot Linux (any distro?) from USB on a MacBook Air that has no hard drive?

I've a MacBook Air that has burned out three hard drives from OWC. The original drive is gone somewhere, and it no longer makes sense to purchase a replacement. The rest of the hardware is in good ...
0
votes
2answers
153 views

Why my macbook sometimes plays a chime when booting/rebooting, sometimes it does not?

I don't observe any specific pattern of this behaviour. Strangely, sometimes when my macbook reboots/boots, it plays a chime sound. And often in other cases, no chime sound is played. So what ...
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 ...
3
votes
4answers
22k 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 ...
1
vote
0answers
654 views

How to create linux USB discs that do work on Apple Macs?

It seems that there are several problems releated to incompatibilities between Apple-EFI and UEFI that do prevent Apple users from easily using USB drives to install or even run other operating ...
4
votes
1answer
519 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 ...
2
votes
0answers
350 views

Unable to boot into anything but single user mode

Last night I upgraded from Mountain Lion to Mavericks (mid 2009 macbook pro). Everything went smoothly during the upgrade, but it resulted in an extremely long and unstable boot process. If I was ...
0
votes
1answer
286 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, ...
1
vote
2answers
3k views

How do I restore a Windows 7 DMG file to Boot Camp (and make it bootable)?

My iMac's HD died last week, and so I was unable to access OS X (I had a Time Machine backup of it though). Fortunately I was able to boot into the Recovery HD and use Disk Utility to backup Boot Camp ...
0
votes
1answer
295 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 ...
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 ...
2
votes
1answer
1k 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 ...
0
votes
1answer
281 views

iMac 27'' mid-2011 stuck on startup (grey screen)

Okay, so I'm having the dreaded grey screen on my iMac - precisely : i'm having it doing a normal startup i'm having it trying to boot from recovery partition i'm having it trying to boot for ...
0
votes
0answers
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 ...
1
vote
2answers
974 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 ...
1
vote
1answer
241 views

My 2011 MacBookAir boot screen does not list MBR USB flash drives anymore – Why, and how to list them again?

I have a MBR-formatted, bootable USB flash drive with GRUB. I have tested it successfully on other computers - one with BIOS and another one with UEFI. I usually boot my 2011 4,1 MacBookAir with that ...
0
votes
1answer
211 views

Time machine restore failed to fix boot

After connecting MacBook Pro running 10.8 to video project, the system crashed and after restart it booted into recovery (OS X Utilities). I tried to fix the problem with checking disks and disk ...
0
votes
1answer
88 views

Mavericks install: “there was a problem… try reinstalling”, third time in a row

Mavericks install worked at first. I was able to enjoy Finder tabs and such. I updated Tuxera for Mac to 2013 and rebooted, then I was stuck at an endless spinner. I tried disk repair, safe mode, same ...
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 ...
0
votes
0answers
356 views

Can't use Boot Camp because startup disk must be Mac formatted

During the Boot Camp installation by mistake I erased the Macintosh HD partition, but before continuing the installation of Windows I stopped the process. Using a bootable live CD I saw that all the ...