You can't turn raw into a filesystem without formatting it first. You can access the data through any program (not just getdataback) and boot your os from it. If you had for instance, win 7, you could of used grub4dos or isolinux to chainload the bootmgr file and would of booted. When you get inside windows, it automatically sees your hdd/partititions as what they were before it turned into raw.
I know this because I'm running a raw hdd with win7.

its not worth it.. already tried.. shitty dos program...
It is not shitty. trust me! It is recommended to do any kind of mbr, ebr, recovery, partition, format etc outside of the operating system. IE through DOS