The disk cannot be partitioned because some files cannot be moved. If you received the following error message, continue reading: If you had no problems after this point, you can skip to the "Reformat Windows Partition" section. Insert your Windows installation disc and click install. I personally went with 80 GB for Windows on my 250 GB hard drive as I will be using OS X more frequently.Ģ. Remember that 32 bit Windows 7 requires at least 16 GB to install and 64 bit requires at least 20 GB. You will then be asked what size partition you will be dedicating to each "side" of your computer. Follow the onscreen instructions which will prompt you to download Windows Support Software (to your USB) and to install Windows. Open Boot Camp Assistant from the Utilities folder. Turn on Time Machine and wait for your computer to finish backing up.ġ. Simly connect your external drive and select Time Machine from System Preferences or Applications. There are other programs out there such as Carbon Copy Cloner which you can also use to back up your Mac, but I found Time Machine to be the easiest. Now that your external hard drive and USB are ready for OS X and Windows, you must back up your computer. Then click erase, and now your USB is ready to downlaod the Windows Support Software.īack Up Mac with Time Machine to External Hard Drive (Bootable backup)ġ. This means again connecting your USB, opening Disk Utility, selecting your external drive, select the Erase menu, and change the Format drop down selection to MS-DOS (FAT). In order to downlaod WIndows Support Software through Boot Camp, you must have a USB (it can be very small as it is only storing a limited amount of data) that is compatible with OS X and Windows. This will mean that part of the drive is dedicated to your backups and the other part (or partition) of your drive is dedicated to whatever else, which in this case will likely be your Windows backup.ġ. In order to partition your drive, connect your external drive, open Disk Utility, select your drive from the left, select the Partition menu and change the size of the partition. If you are backing up with Time Machine (which I recommend) then partitioning your drive really is not necessary. This is only necessary if you wish to store more data on your external drive than just a backup. Next you want to partititon your external hard drive. It is not a requirement of boot camp to format your external drive this way, but it does make your drive more useful in the long run.ģ. If you already have information stored on this device DO NOT erase. Now your drive is formatted for OS X and Windows. Then select the Erase menu and change the Format drop down selection to MS-DOS (FAT). ![]() To format your external drive as MS-DOS (FAT) simply connect your external drive, launch Disk Utility (in the utilities folder), and select your external drive on the left hand side. In doing so, you are able to use your external drive on both the OS X and Windows sides of your computer.Ģ. The first is to format your external hard drive as MS-DOS (FAT). In order to prepare your external hard drive, there are two things I would recommend doing. ![]() Prepare an external hard drive for back upġ. Insert your Windows installer disc and wait a few seconds for the disc to be recognized.Here are full step by step instructions to boot camp your mac with Windows 7 from OS X Mountain Lion, including instructions in case of error messages. Insert your Windows installer disc and wait a few seconds for the disc to be recognized.īootcamp gives me this message: The installer disc could not be found. Download latest Windows support software Right click > Open With > DiskImageMounter.File > New Image > Format > DVD/CD Master > Save file.Disk Utility > Right click mounted iso file.Right click ISO file > Open With > DiskImageMounter.Formatted MS-DOS FAT 16GB 2.0 USB Stick using Disk Utility.There seems to be a lot of different ways to get this to work depending on various system specs etc so I am getting confused trying to get the correct method to work on my particular machine.Ģ1.5inch mid 2001, macOS High Sierra, Bootcamp version 6.1.0,Īnd a brand new 16gb blank USB Stick (formatted to MS-DOS Fat using Disk Utility erase feature, blank DVD-RW) I am having a hard time getting Windows 7 to install on my iMac 2011.
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