Hi I am trying to update the OEM medion mobo I have MS 7502 to 1.0R. The only problem is, I made a Boot CD to go into Dos and update it but I can't see the hard drive, I am not sure how I can access the flash tool/new bios version in DOS. I can't see the HDD or anything else when I am in Dos. Only the boot cd. Also booting from USB seems to be impossible even when enabling it through bios. It just goes strait to HDD. The mobo seems to have AHCI enabled, I am not sure if this is the problem but in the bios there's nothing to enable or touch it. Anyone has a clue how to update this bios? Thank you!