hello to everyone, First of all i want to say thanks in advanced to any person who helps me with the problem I am about to present to your guys. I have two hard disk drive(not 1 with 2 partition), first HDD 55GB with Windows Vista Ultimate, and the second HDD 460GB it used to be empty. I decided to try Windows 7 Home Premium 32bit, i tried it, i liked it and now i want it to be my main OS and delete Windows Vista Ultimate and format that HDD(1st HDD with 55GB) so i can use it on as a back up disk, however when i try to do this, i cant, i get the folllowing errors: thats when i try to perform a format by going on my computer and right clicking the HDD(where Vista is installed) and hitting format. thats when i try to perform a format by going on the start menu then right click on my computer, then hit mage, disk management and finally right click on the HDD where Vista its installed and clicking on format. Now ive ben researching for this about a day already, and i saw on one of the forums that i need to have Windows 7 as the bootloader or something like that....in other words what i could understand its that in my case Windows Vista its the one that has the bootloader meaning i cant format that HDD because of this....i guess what i need its to have 7 to be the bootloader so i can perform what i stated below....any help would be great and also i would really appreaciate if it could be like for dummies since i dont consider myself an expert on the computers world....i also want to state that i dont want to install Windows 7 in the 1st HDD with 55GB. Thanks in advance again.