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
12 views

DVD stuck in 2006 iMac, won't boot

So I put a DVD in and it wouldn't come out. I wanted to try the "hold left mouse during start up" method of getting it out and now it won't boot and I can still not get the DVD out. It is my GF's old ...
0
votes
1answer
31k views

White MacBook hangs at gray Apple screen forever, won't boot to single user, won't mount using Disk Utility. What do I do next?

After a forced shutdown, my white MacBook hangs at the gray screen with the Apple logo and an infinitely spinning progress wheel. I can boot in verbose mode, but I didn't see any particular error, ...
0
votes
2answers
70 views

Installing Microsoft Windows VM on OS X

I'm kinda new to the Mac OS, in fact I got this current Mac this week so I'm pretty noob with it. I need to run a VM with windows 11 and 10 for testing purposes. So I downloaded and the virtual ...
0
votes
1answer
38 views

MacBook air is messed up, can't erase the hard drive from recovery

Something happened when installing El Capitan and now I have only one partition in my hard drive with only 30 gigs of space when it's supposed to be 128. I can't seem to erase anything. Any advice?
0
votes
2answers
4k views

Mac Mini can't unmount disk in Recovery Mode

I need to wipe my Mac Mini and reinstall OS X. Booting into recovery mode (holding command+option+R), I try to erase the disk in Disk Utility but it says it cannot unmount the disk or gets stuck on ...
0
votes
0answers
41 views

Macbook pro keep on rebooting after Windows 7 installation while booting

I recently purchased Macbook pro 13inch early 2012 edition and wanted to dual boot windows 7 and Mac OS. After Googling, followed the below links and was able to successfully install WIn7 ...
1
vote
0answers
40 views

I can't boot my iMac to Mac OS X

I have Windows (Boot Camp) installed. So I ran out of storage and thought about partitioning my Mac's part of drive. I partitioned my Mac's drive and set Windows to boot by default. Once I lost ...
0
votes
0answers
61 views

Mavericks Login Screen Gone, Black screen with white dash upper left corner

Two weeks ago I was cleaning my system from old and unused drivers and leftovers and it looks like that I deleted something that was crucial. Using UninstallPKG I removed unused Printer drivers, Old ...
0
votes
0answers
46 views

EFI Boot icon on startup menu

I completely removed Boot Camp partition from my MBP (by DiskUtil). Everything is OK, but now when I start the system with the boot menu I see the "EFI Boot" icon instead "Windows" drive. What does it ...
0
votes
1answer
81 views

Entering in recovery system trouble

When I'm trying to enter in recovery system through pressing cmd+R I'm getting OS X Internet Recovery instead of Utilites window. How to avoid it?
2
votes
5answers
2k views

Installation of Yosemite is interrupted by a white screen at ⅓ of progress bar

The loading of the installation from a Yosemite USB installer drive is interrupted by a blank screen about ⅓ into the progress bar. The same USB drive works on another (older) MacBook Pro. The ...
0
votes
1answer
139 views

Windows 10 will not boot anymore

Urgent! I have an existing Windows 10 installation via Bootcamp which has been on my Mac for months without issue. However for ages I have been wanting to read my Mac partition from Windows which it ...
0
votes
0answers
86 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
votes
0answers
36 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 ...
0
votes
1answer
66 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
votes
1answer
90 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 ...
0
votes
0answers
238 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. ...
2
votes
2answers
4k 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 ...
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 ...
4
votes
4answers
7k views

Mac won't boot: Way to mount drive and delete one file?

My macbook is currently a brick. I added a /etc/launchctl.conf file that must be malformed. The OS now crashes even when attempting to start in safe mode: "launchd System bootstrapper has crashed: ...
0
votes
0answers
13 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 ...
0
votes
1answer
25 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 ...
0
votes
0answers
124 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 ...
1
vote
1answer
56 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 ...
0
votes
1answer
302 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 ...
0
votes
0answers
36 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 ...
0
votes
1answer
98 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 ...
2
votes
2answers
751 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 ...
0
votes
1answer
113 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
votes
0answers
121 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 ...
2
votes
2answers
152 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 ...
0
votes
0answers
208 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
47 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
83 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 ...
2
votes
1answer
132 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
votes
1answer
34k views

How to recover my harddrive if I can't see it in the disk utility

I have a 2007 aluminium iMac which I upgraded months ago to Mavericks. Today it locked up and I held the power button to shut it down and cannot get it to start again. I get the flashing folder ? icon ...
1
vote
1answer
723 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 ...
1
vote
1answer
188 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 ...
2
votes
2answers
18k views

Mac wont boot and fan runs high

My Mid 2013 macbook pro recently will no longer boot. I was using it normally (no excessive use) and then all of a sudden it just went black and shut off immediately. I can no longer boot it (I got it ...
0
votes
1answer
231 views

MacBook Pro keeps returning to login screen

I can login to safe boot without issue. I created a new admin account through safe boot, but upon first full login into this new account, the same behaviour as in the title showed up instantly. I ...
8
votes
3answers
12k views

Boot screen has wrong display resolution

I recently used my MacBook Pro (OS X 10.8.4) with a projector using a mini display port to VGA adapter. The resolution of the screen was modified from the use of the projector from 1680x1050 to ...
0
votes
0answers
28 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
vote
3answers
747 views

iMac stuck at white screen - graphics issue?

I have a mid-2007 iMac that can't boot into OS X Lion unless it's in safe mode. When I turn it on, the Apple logo appears, then the loading spinner, then a white screen with no cursor. What makes me ...
0
votes
1answer
208 views

Dual boot Linux Mint 17.1 with OS X Lion

I have a 13' MacBook (2007, hw.model: 2,1) running OS X Lion (10.7). I wish to dual-boot Linux Mint 17.1 alongside OS X. I created a Partition for Linux, and have also installed rEFIt (0.14). I have ...
3
votes
2answers
45k 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?
0
votes
2answers
364 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
105 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 ...
3
votes
3answers
16k views

No bootable device - insert boot disk and press any key

When I boot my Macbook Pro 13" Retina (running newest Mavericks), it is showing me this error: However! If I boot holding the ⌥ alt-key, it shows Mavericks as option. When I press ⌤ enter-key to ...
1
vote
2answers
487 views

Mac USB Linux boot disk

I have a 13" MacBook Pro early 2011 model. It will not boot from any Linux USB boot disks I have created. I know these disks are working on later models as I have tried with 2012 Retina 15" booting ...
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 ...