I think the prob is that you first must merge all segments into one sdc before extracting them. But don't ask me how to do that, there was a topic here somewhere in this section.
The author of unpacksdc is currently working on updating his software to decrypt the new microsoft algorithm. Windows 7 sdc packages are off-limits until the new version of unpacksdc is out!
Re First Post Why dont you dl the Windows 7 file from torrent. There are authentic ones there. Just need to check the hash values to verify authenticity. Also there are tools that can actually change the iso file from Ultimate to Professional etc. You just need to search the net. Even the Windows 7 Professional that is on MSDNAA site can be converted to ultimate file. I have converted them and checked the hash values and they all correspond to the hash values that are on MSDN and Technet sites. Let me know if you have any luck. If you are having problems, pm me and i will send u the torrent link and the tool i am referring to
If you really can't wait for the release then you might as well download windows 7 iso from the sticky.
Its an old thread, but I wanna reply. Tried the SDC v1.1 from the author site - still no go on Windows 7 - run CMD as Admin, and do the exact steps. Downloaded a test file EN_MSDOS622