It’s quite possible that there are other ISO mounting apps that will work for this, but I can only verify that it works with Toast. While the obvious answer here is to mount the disc image with OS X’s tools, they won’t work because the Assistant knows that you don’t have a physical disc in place. This is the solution to “The installer disc could not be found”. This will “fool” OS X into thinking that you have a physical optical drive and the Windows 7 disc loaded into it. Locate that copy of the ISO on your Mac and right click it to open the menu, select Services, then use the Mount It option.

Once you have that completed, make sure that you have installed Toast. Make sure you keep a copy of the ISO on your Mac. Ars Technica has a great, in-depth explanation of what’s going on, but it’s a very simple process. First, take that ISO of Windows 7 and use Microsoft’s DVD/USB Download Tool to make a bootable flash drive with it. “The installer disc could not be found” is going to be the message that gives you fits. You can ignore the warning, but the assistant will stop dead in its tracks once you’ve selected your partition size. But if you have a MacBook or Mac Pro it will scream at you when you load it up.

If you have a MacBook Air, Boot Camp doesn’t look for an optical drive. From here it’s a matter of clicking Continue a number of times and then you’ll have a dual-booting MacBook. After the partition is created, your machine will restart and the Windows installation begins.

The Assistant will download a set of drivers for Windows to install and then it will allow you to select the size of the partition that you want to make. The Boot Camp process is relatively straightforward. Here is my step by step guide to install Windows 7 on MacBook Pro: What You Need Through a few hours of trial and error I’ve come up with solutions to the problems that I’ve faced, so it’s time to pass on those fixes to you in hopes that maybe you won’t waste as much time as I did. Unfortunately Boot Camp Assistant doesn’t like it when you’ve modified the Pro and there are some other snags that you’ll run into along the way. After I did a review of the device a few months ago I started to look at installing a copy of Windows 7 on my Pro for things like League of Legends and the occasional Windows app. If you own a MacBook Pro chances are pretty good that you’ve investigated something like the OptiBay which lets you replace your optical drive with a second hard disk.

How to use mac dvd drive on windows