Install OS X on a MacBook Pro with empty SSD I have a MacBook Pro Retina 13.3" which had OS X 10.10. I erased the entire SSD with Disk Manager and tried to reinstall OS X. Unfortunately, my internet connection isn't good so it would take more than two days to download the installation files, so I downloaded the OS X .dmg on another computer and I made an USB bootable device with OS X 10.10 using PowerISO on Windows 7. Now when I try to install it using the C or CMD+R key, it doesn't show up. I only have the option to use Internet Recovery and I can't use it because it doesn't load. After a while it says "apple.com/support -2002F".

Any help, guys? And sorry for my bad english, haha.

Thank you.
⌘R only opens a specific preexisting partition on a hard drive that's already had OS X installed, so it makes sense that it wouldn't get you anywhere. You want to hold down Option as you press the Power button and watch the computer boot up. That tells the computer to list all the drives you can possibly boot from, and then you just select your bootable drive using the arrow keys and Return.