Refers to booting more than one operating system on one computer.

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Cannot boot into Mac OS X after partitoning

After create a FAT32 partition, I cannot boot again. I'm be able to boot into Recovery. I've been googling around and the solution seems to reinstall. Is there any other way to solve this, or if not, ...
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28 views

Permanently Decrypt non-CoreStorage Partition Encrypted with FileVault

I am asking this on the behalf of someone who did not want to sign up for the SE network. I will use first-person for simplicity. When I bought my computer, it came with FileVault enabled as default. ...
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0answers
59 views

Boot Camp not recognizing Windows 10 ISO

I'm trying to dual boot Windows 10 on MacBook Pro, and Boot Camp Assistant is failing to recognize the ISO I've downloaded (from https://www.microsoft.com/en-us/software-download/windows10ISO). I'm ...
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2answers
180 views

Running Ubuntu on MacBook Pro 2015 — run natively (dual boot) or run in virtual machine for longer battery life?

I currently use Ubuntu in a virtual machine, using VirtualBox software on my host operating system, OS X, on my MacBook Pro 2015. However, the battery life drains quickly when Ubuntu is used ...
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35 views

My partition is using negative space. Should I worry?

As you can see, according to Disk Utility, I'm using negative space in /dev/disk0s7. This is obviously incorrect, however, I am slightly worried as to what this may mean for the partition's effects ...
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1answer
31 views

Bootcamp cannot find both systems at startup

Something strange happened: I closed my macbook pro while using windows 10 When I opened it again it didn't wake up for a while so I forced it to shut down by pressing the power button for 10 ...
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40 views

Bootcamp Windows 7 stuck in 'Installing Updates'. Windows Resuming so can't get to safe menu

I am using OSX version 10.10, I used Bootcamp to install Windows 7. I attempted to restart Windows and it stuck on Installing Updates 1 of 19 for about half an hour. I pressed the power button, I'm ...
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17 views

How to run multiple versions of Mac OSX on my MacBook

I recently bought a Macbook 4,1 from early 2008. (as it says in system information) I need to run multiple versions of osx, like on two partitions. I currently have installed os x 10.7 and need to ...
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30 views

Mac not booting into OS X nor hard-drive utility is running

I am using OS X El captain 10.11.4 on Macbook pro 2009 I created a partition in Boot camp assistance for windows 7, after reboot Windows installation started, but while installing setup shows ...
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1answer
211 views

Dual Boot Mavericks + El Capitan

I was using El Capitan without issues till now. I'm starting to use Pro Tools 10 which is incompatible with El Capitan, so I will need to install a previous OS X version like Mavericks to make it ...
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59 views

How to remove unusable Ubuntu partition after upgrading to OS X 10.11?

I dumbly upgraded my Mac OS X to "El Capitan" and I F&%#ed myself. I can't reinstall rEFInd because of SIP. I can't disable SIP because my recovery partition doesn't have csrutil. I can't delete ...
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50 views

rEFIt Not Working with Ubuntu 12.04/MacOS dual boot after upgrade to El Capitan

I have a MacBook Pro Late 2011 and the version of MacOS 10.7.2 Lion and I've always been using it no problem, so I didn't update to any of the newer versions of Yosemite, Mavericks, etc. On this Mac, ...
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1answer
64 views

How to select an operating system to boot without a keyboard?

I'm in a pretty sticky situation right now... The USB keyboard that I've always used broke. I do have the wireless keyboard that came with my iMac. However, my iMac is dual-booted. When I turn it ...
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1answer
150 views

Boot problem on dual-boot MacBook Pro

Can anyone help me restore the original boot 'order' on my Mac, using command-line? I wanted to install Ubuntu on my Macbook Pro Retina (early 2013), so I could run some specific software I needed ...
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2answers
314 views

Installing Windows 10 on MacBook early 2008 without bootcamp - black screen blinking cursor

I have tried to use the following method to install Windows 10 on my early 2008 Mac. Running OS X 10.7.5. Intel Core 2 Duo. 4 GB. How do I get Windows 10 installed on my macbook pro (late 2008) ...
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40 views

Is possible to create bootable encrypted partitions of Win10 + Debian + DATA on external SSD?

I'm dealing with pretty tricky problem. I want to have external disk completely separated from OS X running on internal SSD. On external SSD should be three partitions: Windows 10 - is possible to ...
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3answers
3k views

No bootable device USB 2.0 MacBook Pro mid 2014

I've been tearing my hair out the last couple days trying to get Windows installed. I have a MacBook Pro Retina 15 inch mid 2014. Yosemite version 10.10.1. Win 7 64 bit iso (sha1 - ...
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1answer
76 views

How do to hibernate OS X in order to reboot to Windows 10

I have Yosemite and Windows 10 installed on my Macbook Pro 2015. On Windows 10 I can hibernate. Then press the power button and hold down ALT key to boot from OS X. However, I can't do the same thing ...
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1answer
455 views

Dual-boot Linux on a Mac with original Boot Loader without uninstalling OS X

phew, long title beware! My question here is, I own a Macbook Air 2014 model, and have duel-booted OS X and Bootcamped Windows 10. Now I want to be able to install a Linux distribution (most likely ...
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0answers
38 views

Regain access to OR get rid of Windows, Linux partitions

(Note: this question is regarding an early 2015 MacBook Air (256 GB 2.2 GHz) running OS X Yosemite 10.10.3) I have happily been running my laptop dual booted with windows - installed as 8.1 Pro, ...
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0answers
48 views

Unable to Boot MacBook using any means after attempted Fedora Install

Wondering if anyone has any last ditch efforts I can try here to salvage my macbook! I recently attempted to install fedora to dual boot on my Late 2011 Macbook Pro, the install crashed, the ...
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2answers
166 views

How to install Windows 10 additionally to OS X and Ubuntu (triple-boot)?

I have installed Ubuntu separately from OS X. rEFInd is already installed. Now I need to install Windows 10. I've created a separate partition for this in OS X. If I try to install Windows from USB, ...
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1answer
361 views

How to make a bootable Yosemite Drive under El Captain (not installation drive)

I have installed El Captain on my MacBook Pro and I want to make a bootable Yosemite Drive. Could anyone help me with that?
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3answers
3k views

Is it possible to use Boot Camp with Windows 10 from an external HDD?

I need to run Visual Studio on my MacBook Pro and I need Windows to do that. The easiest and well known way to install Windows on a Mac is by running the Boot Camp app on the Mac and let it do what's ...
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1answer
133 views

Run multiple instances of El Capitan on a single Apple laptop?

Is it possible to simultaneously run two instances of El Capitan on a single Apple laptop? Assume that I'm willing to purchase the best MacBook available as of November 2015, with the largest ...
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7 views

How to fix bootable OS on Mac with Grub Rescue [duplicate]

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 install Refind ...
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42 views

Delete yosemite partition from dual boot with el capitan

I want to install El Capitan and dual boot it with my current installation of Yosemite. I know how to achieve that with 2 partitions. I just wonder: if, later, I want to delete Yosemite, can I just ...
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1answer
59 views

Attempting to fresh install Ubuntu dual boot rEFInd does not recognize live boot

Attempted to do a fresh install of Ubuntu by following the procedure found here: Clean install Ubuntu on a dual boot with Windows I assumed that the fact that it was for Vista instead of OS X was ...
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1answer
773 views

Startup disks are disabled after upgrading to OS X El Capitan

Recently I upgraded my Mac mini to OS X El Capitan. After the upgrade completed, I can't select a startup disk in System Preferences -> Startup Disk. BOOTCAMP/Windows is disabled here. Searching ...
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1answer
195 views

How do I get drivers for Windows 10 x64 installed on my Mac?

I've just installed windows 10 x64 on my mac, a partition that I made with Disk Utility. I was going to use BootCamp however the way BootCamp formatted the partition in El Capitan didn't allow Windows ...
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26 views

Macbook booting up in Recovery Partition by default after dual-SSD/HDD

I've installed a SSD, and cloned my earlier HDD OS X to it using Carbon Copy Cloner. Now, whenever I boot-up, the MBP by default boots to recovery partition. How do I correct this? How do I ensure it ...
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1answer
2k views

Read-only HFS+ on Windows 10 with boot camp driver question

I've been searching around on the internet for a while trying to answer this question, but I can't get a clear answer for it. Background info: I'm running El Capitan with a Windows 10 partition on my ...
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70 views

Install rEFInd on separate partition (Errors)

I am trying to install rEFInd a separate partition but have run into an error. I'm doing this because I want to install Ubuntu on my other partition (separate from my Mac and and rEFInd partition). ...
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24 views

How to add addional HFS+ partitions after installing Windows with Bootcamp

The goal is to create a few extra HFS+ partitions after running the Bootcamp utility while not breaking Bootcamp's boot-ability. I am Running OS X El Capitain, and I only have a single disk drive to ...
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1answer
60 views

How to create a shortcut/alias for the “NTFS for Mac” preference?

I have a bootcamp Windows installed on my RMBP, and I used to use the "Startup Disk" preference to boot into windows. By click and drag the "StartupDisk.prefPane" from /System/Library/PreferencePanes/ ...
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262 views

Dual-booting a Linux distribution on a Mac with Fusion Drive

I'd like to install a Linux distribution alongside OS X on my 2014 5k iMac with a 3TB Fusion Drive (128GB SSD + 3TB HDD). Most guides about dual-booting Linux I've found focus on regular ...
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192 views

rEFInd - normal OSX not showing, just Recovery HD

I just installed rEFInd (to dualboot ubuntu) and all is working well so far, with a small exception: In the boot interface the normal OSX (Yosemite) is not there, it´s just showing the Recovery HD. ...
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4answers
29k 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 ...
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1answer
236 views

Is running Linux through a VM as fast as running it natively on MacBook?

I am trying to decide whether I should run Linux natively or through a VM on MacBook 7,2? How much performance difference would I observe? Is it worth installing Linux natively or is running it ...
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91 views

How do I use bootcamp or virtualbox to run my windows 7 machine from an external drive on macbook pro?

I already purchased and installed my Windows 7 on an old PC laptop that is about to die. I want to continue using my PC-only programs but I want to upgrade to a macbook pro. I just learned about ...
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2answers
464 views

Dual boot OS X and Manjaro - Problems

(Cross-posted in Linux StackExchange) So I'm trying to dual boot OS X and Manjaro. Using the graphical installer of Manjaro, you're given the option (well, it's an obligation) to create a partition ...
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2answers
191 views

Kali Linux auto boot

I have just installed Kali Linux in a separate partition of an iMac with wireless keyboard and mouse and with rEFInd. When I turn on the Mac it boots into Kali Linux automatically and doesn't ...
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1answer
468 views

Efibootmgr command for OS X

I have successfully been able to install Linux Mint on my Mac. The only issue is I cannot select the boot partition holding option. To fix it I booted into linux and ran sudo efibootmgr -o 1,80. This ...
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2answers
13k views

Bluetooth keyboard not working after update to Windows 10

I updated my (native) bootcamp instance to Windows 10 from Windows 8.1, but now the apple bluetooth keyboard doesn't seem to work anymore. The bluetooth screen says 'driver error' on the device. I've ...
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78 views

Windows 7 Installation - Missing operating system

I have replaced my superdrive with hard drive in order to install windows on it. and I have followed the tutorial here - Boot camp install of Windows 7 issue, no bootable devices And after ...
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2answers
18k views

Windows boot camp option missing in Startup Disk selection

I have a Mac Pro (early 2009) running Yosemite 10.10.2, all up to date. Yosemite is installed on my primary SSD (I have 2 additional magnetic drives). I use Boot Camp, and have Windows 8.1 installed ...
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1answer
430 views

How to resolve the 100% disk usage on my iMac 27" (late 2013) when in Bootcamp bootup

I own an iMac from the late 2013 series, it is the core i7 with 32GB RAM. I eventually established that using Bootcamp would allow for a better experience when working in Windows land (I am both an ...
0
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1answer
118 views

Mac OS install drive not being recognized by computer

I recently installed Mac OS 10.10 (Yosemite) onto an external USB drive. It has been working fine for the past few days. When I need to switch OS installs, I shut down the computer and then pull out ...
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1answer
57 views

Bootcamp Windows 8.1

I recently purchased a Macbook Pro and I'd like to run Windows 8.1. I purchased Windows 8.1 online and got a downloadable version. I now tried to run the bootcamp assistant and was asked to insert a ...
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1answer
428 views

Can I get bootcamp to use existing free space on physical disk?

When I installed my Macbook Pro, I had a 1Tb drive. When I formatted and partitioned the drive, I assigned 800Gb for OSX and left 200Gb free. I intended the free 200Gb to hold a Windows installation ...