Guys i DIDN't use ANOTHER usb key to make it bootable, why you say another? I used the SAME usb stick and booting linnux with it and installing linux with this usb key its a proof its bootable. But i recall that with GParted in ubuntu i firstly created a FAT partition, FAT32 wouldnt boot. Maybe the solution here is to be able to format somehow my 8GB usb key as FAT? But tools wont do it becaus ethey say volume tis too big. With gparted i could format it as FAT of 2 GB tops! but at least it let me do it while hp format tool dont. I know that the usb key its able to boot, i just somehow need to try to format it as FAT before i use the links you gave me. Do you know how can i format it as FAT?