All questions about Bootcamp, its basics, getting it installed and some general FAQs for installing Windows 8 are listed below

(Note: All these are extracted from various Apple Support sites and forum posts)


General Questions about Bootcamp :

Question: What is Boot Camp?  
Answer: Boot Camp is software included with OS X so you can run compatible versions of Microsoft Windows on an Intel-based Mac.

Question: What is new in Boot Camp 5.1?
Answer: Boot Camp 5.1 includes support for Windows 8.1 (64-bit). Use the Boot Camp Assistant and a USB drive to install the latest Boot Camp drivers for your computer. The drivers included with BootCamp 5.1 support Windows 7 (64-bit) and Windows 8 (64-bit) and Windows 8.1 (64-bit). You should download the newest drivers available any time you install Windows.

Question: Which languages are supported in Boot Camp?
Answer: Deutsch, English, Français, 日本語, Español, Italiano, Nederlands, Dansk, Norsk, Bokmål, Polski, Português, Português (Brasil), Pусский, Suomi, Svensk, 简体中文, 繁體中文, 한국어, (العربية مصر), Čeština, Magyar, and Türkçe.


General Questions about Installation and Partitioning :

Question: Where do I find the Installation Guide and Boot Camp Support Page?
Answer: http://www.apple.com/support/bootcamp/

You'll find information about the Manuals, System Requirements, more articles in the Using Boot Camp section, a link to the Boot Camp Discussion boards, and links to download the Boot Camp 5 Support Software (Windows drivers). Also see Boot Camp: Frequently asked questions about installing Windows 8 for more information on installing Windows 8.

Question: Which versions of Windows work with Boot Camp 5.1?
Answer: You can use:

  • Microsoft Windows 8.0 and 8.1 (64-bit)
  • Microsoft Windows 8.0 and 8.1 Pro (64-bit)
  • Microsoft Windows 7 Home Premium (64-bit)
  • Microsoft Windows 7 Professional (64-bit)
  • Microsoft Windows 7 Ultimate (64-bit)

Windows XP, Windows Vista, and Enterprise versions of Windows 7 and Windows 8 are not supported.

Question: Are 32-bit versions of Windows 7 and 8 supported?

Answer: No. Boot Camp 5 supports 64-bit versions of Windows 7, 8.0 and 8.1 only. Boot Camp 4 supports 64-bit and 32-bit versions of Windows 7, depending on the Mac model you have. For more information, see Boot Camp: System requirements for Microsoft Windows operating systems.

Question: Can I upgrade a previously-installed 32 bit version of Windows to 64 bit?

Answer: 32-bit versions of Windows cannot be directly upgraded to 64-bit versions. You should back up your important files, then install the 64-bit version.

Question: How can a Windows partition be resized after Windows is installed?

Answer: You need to delete the Windows partition using the Boot Camp Assistant, and start over to change the size of the Windows partition. Back up your important Windows files first.

Question: Are upgrade installs from Windows 7 to Windows 8 supported?

Answer: Yes, but be sure to install the Boot Camp 5.0 Support Software (drivers) before upgrading to Windows 8. See Boot Camp: Frequently asked questions about installing Windows 8 for more information.

After upgrading to Windows 8, run the Boot Camp 5.1 Support Software installer again.

Question: Can I use a downloaded (ISO) version of Windows with Boot Camp?

Answer: MacBook Air (Mid 2011 and later), MacBook Pro (Mid 2012 and later, including Retina models), Mac mini (Mid 2011 and later), and iMac (Late 2012) can install downloaded (ISO) versions of Windows 7 and 8.

To determine if your Mac supports this feature:

  1. Click the Go menu and choose Utilities.
  2. Open Boot Camp Assistant.
  3. Click Continue. If you see a "Create a Windows 7 or later install disk" checkbox, your Mac supports the use of downloaded (ISO) install images. See the Boot Camp Installation & Setup Guide for more information.

Question: Do computers that come with a Fusion Drive support Boot Camp?
Answer: Yes. Use the Boot Camp Assistant to create a Windows partition and install Boot Camp. The Windows partition will exist on the hard disk drive, not the Flash drive, and is not part of Fusion Drive Logical Volume Group. 3TB Fusion Drive configurations need to update to OS X Mountain Lion v10.8.3 or later to install Windows 8. See iMac (27-inch, Late 2012): Boot Camp alert with 3TB hard drive for more information.

Question: I have a Mac Pro with a Mac Pro RAID card (Redundant Array of Independent Drives). Can I install Boot Camp on my Mac Pro?
Answer: Boot Camp does not support the installation of Windows onto a Mac using a Mac Pro RAID card or software RAID.

Question: Which application should I use to create a Windows partition and to install Windows?
Answer: Use Boot Camp Assistant (located in the Utilities folder) to create a Windows partition and to install Microsoft Windows. Boot Camp Assistant works with an Intel-based Mac that has a single hard disk partition or Fusion Drive. Boot Camp Assistant creates an additional partition for the Microsoft Windows operating system or allows you to install Microsoft Windows on another drive if you have more than one internal drive.

Boot Camp Assistant does not erase your existing Mac OS X partition or any of your OS X software when it creates a new partition for Microsoft Windows.

Important: Do not use disk utilities not created by Apple to partition the drive before using Boot Camp Assistant. Doing so may erase the entire disk.

Question: Can I install Windows on an external drive?
Answer: No. Installing Boot Camp on an external hard drive is not supported.

Question: Can more than one USB storage device be plugged in at Installation time?
Answer: No. You can only use one USB storage device during Windows installation. See Boot Camp: Windows installation boots to black screen with blinking cursor for more information.


FAQs for Installing Windows 8 on your Macbook with Boot Camp 5 :

Question: What is Boot Camp 5?
Answer: Boot Camp 5 is software that lets you install Windows and the necessary drivers on your Mac. For more information about Boot Camp 5, see this article.

Question: Which Macs support Windows 8?
Answer: Here is a list of Boot Camp requirements by Mac.

Question: What are the system requirements for Windows 8?
Answer: Please see this article.

Question: How can I install Windows 8 on an eligible Mac?
Answer: Use the Boot Camp Assistant. The assistant will partition your internal disk and install Windows 8. Learn more about installing Windows 8 in the Boot Camp Installation & Setup Guide.

Question: Can I use an upgrade from Windows 7 to Windows 8?
Answer: Yes. Download and install the Boot Camp 5 Support Software before the upgrade, by using the Boot Camp Assistant in OS X Mountain Lion v10.8.3. Or, download the Boot Camp 5 Windows Support Software here.

Question: What should I do if, during an upgrade install from Windows 7 to Windows 8, an "Uninstall USB 3.0 eXtensible Host Controller Driver" message appears?
Answer: Do not click Uninstall.

  1. Click the back button, then cancel the upgrade.
  2. Download the Boot Camp 5 Support Software by using the Boot Camp Assistant in OS X Mountain Lion v10.8.3, or click here to download.
  3. Try the upgrade again.

See this article for more information. 

Question: "We couldn't create a new partition or locate and existing one" appears when installing Windows 8, what can I do?
Answer: You may have a Thunderbolt device connected to your computer. If so, disconnect the device and try again.

Question: After upgrading from Windows 7 to Windows 8, Thunderbolt devices are not recognized when I connect them. How do I fix this?
Answer: Disable Windows 8 Fast Boot. See Boot Camp: Thunderbolt devices not recognized after Windows 8 upgrade for instructions.

Question: Is there an OS X version requirement to use the Boot Camp Assistant to download Boot Camp 5 Support Software?
Answer: You need OS X Mountain Lion v10.8.3 or later installed to download the Boot Camp 5 Support Software (Windows drivers) using the Boot Camp Assistant. After downloading and installing, choose Go > Utilities. Then, open Boot Camp Assistant and follow the onscreen instructions. You can download the Boot Camp Installation & Setup Guide.

Question: Can I download and install the Boot Camp 5 Support Software if I'm not running OS X Mountain Lion v10.8.3?
Answer: Yes, it's here.

Question: How do I install the downloaded Boot Camp 5 Support Software?

Answer:

  1. Double click the downloaded .zip file to uncompress it. If you don't know where it is, search with Spotlight or check your Downloads folder.
  2. Double-click the Boot Camp disk image.
  3. Copy the Boot Camp and "$WinPEDriver$" folders to the root level of a USB flash drive or hard drive that is formatted with the FAT file system (see question below for steps on how to format). 
  4. Install Windows, leaving the flash or hard drive attached to the USB port of your Mac.
  5. Installation of the drivers can take a few minutes. Don't interrupt the installation process. A completion dialog box will appear when everything is installed. Click Finish when the dialog appears.

After restarting, the Windows 8 installation is done.

If the flash drive or hard drive was not attached when you installed Windows and was inserted after restarting into Windows 8, double-click the Boot Camp folder, then locate and double click the "setup.exe" file to start the installation of the Boot Camp 5 Support Software.

Question: How do I format USB media to the FAT file system?
Answer: Use Disk Utility to format a disk to use with a Windows computer. Here's how:

Important: Formatting a disk erases all the files on it. Copy any files you want to save to another disk before formatting the disk.

  1. Open Disk Utility.
  2. Select the disk you want to format for use with Windows computers.
  3. Click Erase, and choose one of the following from the Format pop-up menu:
    • If the disk is 32 GB or smaller, choose MS-DOS (FAT).
    • If the disk is larger than 32 GB, choose ExFAT.
  4. Type a name for the disk. The maximum length is 11 characters.
  5. Click the Erase button, then click Erase again.

Question: Which versions of Windows are supported with Boot Camp 5?
Answer: Windows 8 and 64-bit versions of Windows 7. If you need to use a 32-bit version of Windows 7, you need to use Boot Camp 4 Support Software. 32-bit versions of Windows 8 are not supported via Boot Camp. Learn more here.