Hello, I am new here and I am seeking advice. Background: I have, mistakenly, removed the MBR on my PC (another machine) after several attempts I solved the issue with the partitions not showing up, now the last part is to recover the MBR using either the Windows 7 recovery disk or Windows 7 Installation Disk. I have the iso of them both, and here is my issue: I only have a working Mac OS X SL (10.6.8), I have 1 pen drive and no DVD/CD's. I have tried several ways to create a bootable USB from mac and I managed to do it only for Linux distro's. I used: sudo -s dd if=/path/to/img.iso of=/dev/rdisk1 bs=1m [the pen is disk1] it works, the contents are copied, but when I put it on the PC and try to run it, it does not work. I also tried to first convert the iso to .dmg, and then changing the extension to .img, to do the same [this is the way it WORKS for UBUNTU bootable usb] I also tried to check out BootCamp Assistant (as I read that it should have an option for creating bootable usb's) but I couldnt find the option. So, since nothing works both for the iso with Windows 7 nor for the one with Windows 7 Recovery Disk, I wonder if the issue is related on the way I do the bootable usb. Maybe you need to do something else for Windows bootable USB's. As if I use the same exact procedure for Linux distro's (I tried 3 of them) it works. I also tried unetbootin and selecting the iso, but nothing changed... I have googled and worked for 1 days now. I also tried to use 'testDisk' and that fixed the partition issue but not the MBR one. Thanks in advace, I hope I gave enough information. Cheers, N.