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
170 views

Cloning Macbook Pro HD to external HD and still using it

I am still on Mavericks and want to upgrade OS X, but since I use a lot of audio apps, plugins etc that would break - I am looking for a way to clone my entire Macbook Pro 1TB SSD as it is right now ...
3
votes
5answers
14k views

How to properly install Kali Linux on MacBook Air (dual-boot with El Capitan)

I updated to El Capitan yesterday (on MacBook Air 2014). I then decided to install Kali Linux 2.0, and boy it's been one problem after another, so far nothing has gone the way it's supposed to. ...
1
vote
1answer
270 views

Boot from usb take forever

Recently I made the stupid mistake of erasing MacBook Pro (2012) HDD without immediately installing OS X. And now it can't even boot or get to recovery utilities. So I decided to make a bootable OS X ...
0
votes
0answers
35 views

Disable boot volume

I would like to know how to stop a volume from being bootable. I've recently installed an SSD into an iMac by replacing the DVD drive with an SSD. The original hard drive is still in the iMac and is ...
0
votes
2answers
199 views

Is it possible to run Android on iOS?

Ok so I was thinking, Can you run Android on a iOS device? I did some research and Android could run on ARM (Most apps would not work) but how come no one has tried to run it. Whats holding them back? ...
0
votes
2answers
433 views

Boot from USB in macbook pro mid 2012

I have removed everything from my macbook pro. Now, how can choose USB as a startup disk? I tried using option "SHIFT" keys also cmd+R. Nothing is working. How can I solve it? I am using Mid 2012 ...
0
votes
1answer
115 views

MacBook Pro won't boot

I have a Macbook Pro 8.2, Intel i7, 4 GB of RAM and 500 GB HDD. While working with some apps open in background, the screen suddenly went blank and music looped. In panic I pushed the power button to ...
1
vote
0answers
25 views

Is the boot menu (ALT on boot) black now?

I have a new MacBook Pro (mid 2015). When I boot, I saw that now the apple is white on a black background. Okay maybe Apple has updated this design. However, I find very odd the boot menu (the one ...
0
votes
0answers
366 views

MacBook Pro: panic cpu caller kernel trap

I am using MacBook Pro with OS X Yosemite installed. Lately my system is crashing and not booting up. While system was crashing, the screen was flickering and then it got shut down. I tried to ...
1
vote
1answer
220 views

iMac 2008 Core 2 Duo does not list my bootable USB stick in the boot menu?

Hi i am trying to install OS X El Capitan on iMac 2008 model Core 2 Duo processor, and 4GB Ram. The way i followed is i created a USB bootable stick and insert to mac machine and restarted the ...
0
votes
0answers
53 views

Diagnosing why a mac needs safe mode to boot

"Fresh" install of snow leopard 10.6 needs safe mode to boot. It's a 2006 24" iMac and I can't upgrade the software to lion since it's not availiable on app store (I don't really want to shell out any ...
1
vote
0answers
267 views

10.11 Prohibitory Symbol after Reimage or Kernel Panic on NetBoot

I apologize if this is convoluted. I've tried so many different ways of getting this to work that I'm getting them all mixed up. With the launch of Mac OS 10.11 El Capitan, we've encountered some ...
0
votes
0answers
228 views

Lion, Yosemite, El Capitan, or Ubuntu 14LTS - Create a BOOTABLE USB - 2006 MacPro 1,1

My box is a 2006 MacPro 1,1 - notable for it's 32b efi mixed with 64b Xeon processors. I can boot into all the OS's listed above. I have tried every method I can find to create a Bootable USB key. ...
0
votes
2answers
130 views

I deleted my OSX partition, and have no patitions formatted to bootcamp, so I can only access BIOS

I recently created a windows 7 partition on my mid-2009 mac-book pro. It then corrupted, so I was forced to delete the partition and attempt to reinstall windows 7, but in the process I also deleted ...
0
votes
0answers
60 views

Bootcamp no longer able to boot to OS X

I have a Macbook Pro 2014 with a Boot Camp partition for Windows 10. I decided to create a partition for data. I created and re-sized the partition in Disk Utility (OS X) but formatted it using a ...
0
votes
1answer
610 views

My MacBook Pro makes 3 successive tones, a 5 second pause (repeating)

My MacBook Pro makes 3 successive tones, a 5 second pause (repeating). According to Apple, this indicates RAM does not pass a data integrity check. So how can I fix it?
0
votes
0answers
3k views

Windows 10 partition no longer boots after El Capitan upgrade

I have a triple boot MacBook Pro (mid-2014 model) with separate partitions for Mac OS X, Ubuntu Linux, and Windows 10 (recently upgraded, without any issues, from Windows 8.1). Before, everything ...
0
votes
1answer
290 views

Mac book Pro [2011 model] - Screen bit distorted and greenish tint and does not boot completely after the apple logo and progress bar loads

My Macbook Pro hung so I forced restarted it but on restart the screen was bit distorted and had greenish tint (Picture below) also it never goes past the Apple logo and progress bar to boot ...
1
vote
1answer
20 views

Fans in overdrive but fails to boot

I have an Apple Xserve Intel Xserve3,1 with dual quad core cpu and 48gb ram. Today the system fans started going into hyperdrive (i.e. very fast and very high pitched) and was unresponsive to ...
1
vote
0answers
55 views

Lost a Fusion drive boot disk

i can see my Fusion Drive disks (ssd+hdd) in Terminal: But i lost it in the boot and cant boot MAC OS. (please see album with photos on http://imgur.com/a/N5zY2 ) I cant repair my system, when i ...
1
vote
0answers
93 views

Trying to run Windows from USB on Mac, says “No bootable device found”

I am trying to run Windows 10 on my Macbook Air. I originally wanted to upgrade my SSD so that I would have enough space for a windows partition. Unfortunately, I can't do that with my model (I have a ...
1
vote
0answers
31 views

Boot iMac from Macbook

The new MacBooks are the best But their processors are pretty anemic. Not a big deal when I'm out and about, but not great for serious work. What I'd like to do: Get an iMac with decent specs, ...
0
votes
0answers
57 views

Debug why USB drive is ignored as a bootable device?

I created a USB drive with 'El Capitan' on it, as described here, which uses mostly these directions, "option 2: Use Disk Utility." I now have a USB key with "Mac OS Extended" format and 7.8G of ...
1
vote
2answers
5k views

El Capitan frozen boot process

Just thinking: I have been reading a "lot" of users who's system just did not starts once it has been turned off or after a restar command. Some things in common: Virtual machines, Boot camp, multiple ...
8
votes
4answers
30k views

How do I get rEFInd working with OS X 10.11 El Capitan?

I noticed that I could not install and use rEFInd after upgrading to OS X 10.11 El Capitan. This restricts me to OS X so I cannot boot my Linux partition. I get the following error: error "Could not ...
1
vote
1answer
856 views

Cannot mount bootable Windows 10 drive

I am trying to make a bootable USB with the dd command since Boot Camp does not work. If I execute this command: sudo dd if=Win10.iso of=/dev/disk1 bs=1m I get a disk formatted as Universal Disk ...
0
votes
0answers
120 views

Can't get Windows to boot after editing partitions

When I attempt to boot Windows I get the error 0xc000000e. This happened after I made a partition in Windows and then deleted it in Mac OS. Here's my current set up. Is it possible to repair it using ...
0
votes
2answers
93 views

MacBook not turning on (fan loop)

I'm in a very frustrating situation of having my MacBook Pro 15' Retina (A1398) stuck in a boot loop. Well, not exactly boot loop: when I connect my MagSafe charger, it goes in a constant cycle of ...
4
votes
2answers
2k views

Using the -Bless Command on Multiboot Macs with 10.11 El Capitan

As part of our standard deployment, we tend to deploy multiple OSs on Macs, from 10.7 to 10.11. However, with the new SIP (System Integrity Protection), the -bless command no longer works properly. I ...
0
votes
0answers
167 views

Bluetooth mouse won't work on FileVault 2 machine until after login

On a machine with FileVault 2 enabled, my Apple Magic Mouse does not work until after I log in. After login, the mouse works and I can tell from IORegistryExplorer that /System ...
0
votes
0answers
446 views

How to use Testdisk under OS X recovery mode?

I accidentally broke the GUID, I suppose, when I was trying to solve the incorrect EFI partition problem. What I have now is: Disk1 is a 4 GB thumb drive with a recovery partition (disk1s2) I ...
0
votes
1answer
34 views

5 Minute Yosemite Boot Time?

My spring 2011 Macbook Pro with 5400 rpm drive takes 5 minutes from pressing the on button to boot. I have about 400 GB of RAW and NEF (Nikon camera) files and only Photoshop and Lightroom installed. ...
0
votes
0answers
66 views

Can't boot after Yosemite Update

Here's my setup: Macbook Pro 7,1 Mid--2010 10GB RAM (1 8gb + 1 2gb) 1TB Toshiba HDD OS X Yosemite 10.10.0 installed beside Windows 7 32 Here's my issue: I installed the ...
1
vote
2answers
1k views

What does a non-booting macbook displaying a lightning bolt mean?

I returned to my MacBook after a few days of not using it, and there was a message that the system had run out of application memory (weird...). So, I followed the recommendation and Force Quit a ...
0
votes
1answer
610 views

How to change the GPT partition type of an EFI partition?

I have a perplexing problem with the EFI partition on my boot SSD. The GPT partition type is "Microsoft Basic Data". On all other drives in my system, including my Carbon Copy Cloner clone of my boot ...
0
votes
0answers
289 views

SSD doesn't boot anymore when plugged inside Macbook Pro

I've got two hard-drives in my Macbook. A SSD (connected to the original hard-drive connector) and another drive connected to the optical drive bay with a kit. Since this weekend I can't boot from ...
0
votes
1answer
439 views

Mac Pro 3.1 with Yosemite won't boot after GenericUSBXHCI USB 3.0 .kext added

I was trying to install drivers for my NEC USB 3.0 PCI card. ( propably http://sourceforge.net/projects/genericusbxhci/files/ or https://github.com/RehabMan/OS-X-Generic-USB3 ) I rebooted my mac into ...
0
votes
1answer
130 views

Boot from external USB3

I've recently bought an usb3 flash drive where I've put a live kali linux distribution. When I try to boot my early 2015 mac book pro (with Yosemite) from this usb3 drive I have two options: windows ...
0
votes
0answers
189 views

iPhone: Reset auto boot flag in Bootloader using iRecovery

I was using a iPhone 3G (jailbroken) and recently it got struck with showing iTunes + Cable Icon to do the restore. I had used iRecovery under Ubuntu 14.04 and enter into interactive shell using -s ...
0
votes
1answer
39 views

MBP freezes for 30 seconds all the time since this afternoon

I'm looking to find the cause why I'm getting the spinning beachball on my MBPro all the time since this afternoon. I can work for like 30 seconds and get a spinning beachball for like 30 seconds. ...
0
votes
2answers
651 views

iPhone won't boot after installing IOS9

I downloaded IOS9 with the phone and went through the the location service and other yes/no screens. I got to the screen that said lets get started and after that I just got the Apple logo and a ...
0
votes
0answers
19 views

Set a startup screen language different to the original one

When I bought my MBA I set the system language to "Spanish". My problem is that I need the english keyboard configuration in the startup screen to log in, and I don't want to be changing the keyboard ...
0
votes
0answers
303 views

MacBook Pro (A1278) gets stuck at startup (Verbose, Single User, Recovery…)

When trying to start my Macbook, it stops at the Apple logo with spinning gear or progress bar. I've tried Safe Mode, but it got stuck at the same point. Command + V, Command + S, Command + R = Not ...
0
votes
1answer
32 views

iPad mini retina doesn't boot

My iPad shows the Apple logo, and then it turns off. I tried reinstalling iOS with iTunes (update) and it returned error 27? Any ideas of what to do?
0
votes
0answers
66 views

Bootcamp no longer bootable after I fixed GPT/MBR mismatch error

I had an error which prevented me from upgrading my system, so I did a few commands with gdisk to fix it, but now bootcamp is no longer bootable. When I boot into it, (it doesn't appear when holding ...
1
vote
1answer
500 views

OS X 10.11 GM Candidate 1 left my Mac unable to boot

I tried to install the OS X 10.11 GM to my 2012 Macbook Air, and it crashed during the install. I tried to go into recovery mode to reinstall OS X, but once I put in my Wifi password and press the ...
0
votes
0answers
139 views

iMac startup manager not displaying

I have an iMac 27" from late 2009 and I'm trying to fix it but everything I've tried thus far doesn't help. I don't have an Apple keyboard but a normal keyboard should work as well. When turning the ...
0
votes
1answer
146 views

Ubuntu Bootable DVD created with a MacBookPro9.1 is not recognized

I followed http://www.ubuntu.com/download/desktop/burn-a-dvd-on-mac-osx to create a bootable UBUNTU DVD with my MacBook Pro9.1 (OS X Yosemite 10.10.5). I ended all the steps but I cannot boot such ...
3
votes
2answers
5k views

BuildError(): error building a user of type

I'm getting a strange message each time I boot. For a quick second before the Apple Logo appears I see the text: BuildError(): error building a user of type 0x20010008 Then the Logo appears, and ...
0
votes
0answers
135 views

Macbook Pro Boots Only Halfway

The Macbook Pro in question is a mid-2011 model. It runs OS X Yosemite (10.10) and a Bootcamp-enabled Windows 8.1. The last significant actions performed on it included updating certain Eclipse IDE ...