Become a MacRumors Supporter for $25/year with no ads, private forums, and more!


macrumors member
Original poster
Dec 17, 2011
I have an ISO image of Windows 7 on my MacBook Pro. How do I install Windows 7 without Boot Camp Assistant. I cant use Boot Camp Assistant because I dont have a disk and it doesnt give me and option to use a ISO image. I do not want to use VMWare Fusion or Virtual Box or anything like that. I want to be able to dual boot into the OS. Can someone help me please?
Thanks a lot. :)


macrumors 68000
Jul 23, 2008
Hearst Castle
How about using a USB disc. You can use something like to make bootable media. Then use any media you have laying around (DVD or USB). Though I think you do need to use bootcamp assistant.

Also, agree on dual boot. Don't like VM too much, prefer bootcamp. Funny thing is how Macs run Windows better than PCs do.


macrumors 6502
Aug 17, 2011
Sorry, but only Macbook Air and latest Mac Mini support usb stick installations, the others need to use dvd to install it.


macrumors 6502
Jan 9, 2012
I'm assuming the copy of Windows you have is illegal.

If I were you, I'd just go out and buy a blank DVD. They're insanely cheap.


macrumors newbie
Jul 29, 2012

I had a plethora of issues on a older MBP to install Win7 so here is what I can confirm works

First off MacBook Pro 15 early 2008 2.4 Ghz, 4 GB mem, Lion 7.4

Here is what you will need:

USB key

Windows Vista Bootable DVD

ISO of whatever version of Windows 7 you plan to use

BootCamp 3.0

BootCamp 4.0

BootLoader V0.14 =

Read ALL the steps first before proceeding

1.) Go to the Mac's Disk Utility and partion your drive to whatever you want as a size for Windows install (I used 100GB) and make sure to use the option to format it as FAT. Note use a unique size this will be IMPORTANT later

2.) Download and install Bootloader on the Mac

3.) Use BootCamp assistant to ONLY!! download BootCamp 4.0 (Windows Support Software) save the files to a USB key.

4.) Download BootCamp 3.0 and save that to your USB key (Google is your friend)

5.) Boot up to the bootloader screen on the Mac

6.) You need a copy of Windows Vista bootable (this is critical) I used Windows Vista Ultimate 64. If you have it as an ISO burn it out to DVD.

7.) Boot up your Mac with your Windows Vista DVD to the bootloader screen and select the option to boot off the Windows DVD

8.) At the partion selection screen select the partition you created in step 1 (you took note of the size....right?)

9.) Use the format option which should format the partition as NTFS and continue with the install

10.) Now you have Vista running, insert the USB key and run BootCamp 3.0 if you are running 64 bit you will need to do the following:

In the Start Menu Type "cmd", then right-click on the program that appears and choose "Run As Administrator". From the command prompt change to your USB key navigate to BootCamp 3.0 and:

cd "\Drivers\Apple"
msiexec /i BootCamp64.msi

11.) Now that all your drivers are up to date, go to control panel and under uninstall programs uninstall BootCamp

12.) Now either create a folder on the root of C:\ and extract your Windows 7 iso (UltraISO is your friend) to a custom directory or burn the iso to a DVD and let it autorun

13.) Now you just do a in-place upgrade (Don't bother with the connect online for updates option)

14.) Grats you are running Windows 7, now just run BootCamp 4.0 from your USB key and let it update your Mac drivers...your done!!

Hope the above helps others



For those interested:

USB install option enabled for BootCamp as described here:

Just a side note, the terminal window description I couldn't get to work... but clicking the BootCamp icon once so it is selected and then using the gear icon in the top menu and selecting "Show Package Contents" and navigating to the file directly and altering it worked for me
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.