How to recover original OS when different OS was installed

[premak]

Hello everyone,

I have a problem with my Thinkpad x201. Original OS was Windows 7 Pro 64 bit. I installed Windows 7 Ultimate 64 bit on the main data partition and therefore i lost my original OS. But the recovery partition and the smal 1GB partition (system_drv) are still intact! Now i cant access recovery partition in windows, nor i can access it via ThinkVantage button on startup.

I found something on similar issue - linux installed, but not windows.

So can i recover original OS and how to do it without buying recovery discs?

Thank you for help.

[The_Solutor Guru · Accepted solution]

http://forums.lenovo.com/t5/X-Series-ThinkPad-Laptops/Making-a-usb-stick-with-the-Lenovo-recovery-pa...

[premak]

Thank you, i followed the steps and now i have out-of-the-box system again!