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

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58 views

Cannot either mount or repair greyed out partition

As a likely symptom, I started boot camp earlier in today to install a dual boot Windows on my machine and the install/remove Windows option was greyed out and I could not select it. After that, I ...
0
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0answers
32 views

MacBook Pro stuck on login

I know that this question has been answered before, but none of them seemed to help me. My situation is as follows: I was running MatLab and had too many figures open (like 40, and Matlab always lags ...
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1answer
46 views

Boot Into Recovery Partition After Installing Linux.

I want to install Linux on my mid 2014 Macbook Pro for educational purposes. However, I don't want this to be permanent. I've tried to partition the hard drive and install both OSs but I have not ...
0
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1answer
59 views

Macbook Pro late 2011 version won´t boot up

Hi guys I have been searching the forum and haven´t seen a solution to my problem therefore i will start by explaining what happened. Last night all of a sudden my mac froze, the mouse would move but ...
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0answers
73 views

Anyone knows how to fix Module wl Not found? t

Does anyone know how to go around fixing: Fatal: module wl not found I get this when I insert into terminal: modprobe wl on Kali linux 2.0 that I dual booted to my Macbook air El capitan. ...
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0answers
12 views

Under what circumstances would the startup chime enable itself?

After doing some reformatting/reinstalling a couple a weeks ago, the startup chime on my Macbook has never gone off when I turn it on for the past few weeks. However, when I tuned on my Macbook Pro ...
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1answer
24 views

Splitting Partition On External Drive

I have a 1TB external drive with three partitions: FAT32 for extra storage (~500GB) Ubuntu (~499GB) Linux swap space (~1GB) I want to boot to rEFind and then to Ubuntu from any Mac; preferably ...
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0answers
87 views

Grub Rescue on Mac

I have a problem: yesterday I installed Kali Linux 2.0 on my Macbook air (runs El Capitan). However, after managing to run it, and exiting it, i couldn't find Kali on my laptop anymore. I forgot to ...
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1answer
43 views

MacBook Pro (late 2013) w/ Yosemite & FileVault won't boot: LCD light only, no other activity

After lid-sleeping my machine with ~10% battery left, a few hours later, attached to AC power, it would not wake from lid-open, keypress, or short power-button-press. After doing a ...
1
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1answer
599 views

MBPr with El Capitan freezes at or right after login

Here's the problem: my colleague has a MacBook Pro Retina with El Capitan installed and he's been having issues with regular freezes lately. Everything has worked fine under Mavericks for well over a ...
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0answers
33 views

Yosemite on rMBP 15" refuses to boot, fans running high

Everything was great. I hung out in OSX, did some work, then rebooted into Windows (Bootcamp) to play a game. After rebooting back to OSX, i notice that the system is stuck on boot. The apple logo ...
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2answers
126 views

Macbook gets stuck on Grey Screen, won't boot normally

I've tried many steps so I'll list them here, I can do a reinstall but I prefer to figure out the actual cause of the problem and I don't think a reinstall will solve it. Macbook 2007, OSX version ...
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1answer
81 views

MacBook Pro 2011 keeps booting the OS X Utilities and won't accept our Apple ID

Before the issue became my headache, one of our relatives created a partition on my MBP to keep their files. Yesterday they deleted their partition and there might be important files that was delete ...
0
votes
1answer
96 views

How to edit Yosemite Bootloader, startup manager?

I have been searching and trying to correct my mid 2011 MacBook Air screen when you startup by holding the option key. My Bootcamp no longer shows but the created USB Windows 10 install stick does ...
0
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0answers
93 views

Winclone 5 partition is not bootable

I have been trying to transfer my windows copy from my old drive to my newer drive. I used WinClone5 to do this, but when I booted it up, it just said this: ðR(a smiley face)NTFS And a blinking ...
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0answers
162 views

Snow Leopard meets El Capitan: disaster?

My Machine: MacPro4,1, Quad-Core Intel Xeon 3,32 GHz, 32 GB RAM, NVIDIA GeForce GTX 680 video PCI, Sonnet USB3 PCI card I've been trying to install Snow Leopard in one of my empty internal drives ...
0
votes
1answer
178 views

Macbook pro stuck on boot - “AppleUSBHostPort::interruptOccurred: overcurrent detected”

I am trying to reinstall OSX on a MacBook Pro Mid-2009 but it hangs on startup. I have used several disks but now when running in verbose mode see that it hangs at ...
5
votes
4answers
2k views

How can I get my 3rd party SSD to boot El Capitan?

I have a Mid 2012 13 inch MacBook Pro that's been running successfully with a hybrid drive (3rd party) for the last few years. Recently, the operating system crashed and the hard drive is no longer ...
2
votes
1answer
90 views

2011 MacBook Pro won't turn on

Although the problem is quite common, after googling for several hours I didn't find an appropriate solution for my particular case. I got a 2011 MacBook pro with the latest OS (El Capitan) and it ...
0
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1answer
39 views

Mac book Air Does not start without charger connected

When I close the lid of my macbook then it does not boot on opening the lid again. The battery is 100% charged, It boots only when I connect the charger and takes 3-4 minutes charge before it starts ...
0
votes
2answers
1k views

OSX El Capitan - cannot make bootable usb stick with boot camp

I meticulously followed this tutorial, and this worked for me in 2014. I have a 4GB usb stick plugged into the computer. It should be enough for windows 7, a partition which no longer boots and I am ...
12
votes
5answers
2k views

Installing 20+ operating systems on Mac without any virtualization

For a scientific project I need to install these operating systems on my Mac Pro. The catch is... It has to run on a native hardware, no level 1 or 2 virtualization is allowed. Here is the list of ...
1
vote
1answer
410 views

Create bootable USB disk with Bootcamp 6

I have OS X El Capitan with Bootcamp 6 in an Early 2015 Retina Macbook Pro. I want to create a bootable USB disk with Windows 10 to install it and then completely remove OS X. I have read different ...
2
votes
2answers
103 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
6k 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
63 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
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0answers
24 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 ...
-1
votes
2answers
179 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
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2answers
197 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
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1answer
94 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
24 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 ...
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0answers
206 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
118 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
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0answers
42 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
223 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
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0answers
197 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
98 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
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0answers
51 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
195 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?
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0answers
2k 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
106 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 ...
0
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1answer
15 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
50 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 ...
0
votes
0answers
76 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
30 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
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0answers
42 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
3k 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 ...
5
votes
4answers
18k 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 ...
0
votes
1answer
531 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
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0answers
98 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 ...