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Help setting up crossfire!

ok so i made DOS on my usb stick and when i got to DOS i was like crap i don't know any commands so i typed the ATIFLASH -p 0 bios4850new.rom but im pretty sure i have to get to the program first anyone know how to do so? im thinking i need to type in H:\ATI Flash\ATIFLASH.exe? would that be right:?
 
You need to be on your usb stick,D: or E: for example.Type cd D: or cd E: for example,then put dir to see if your in the correct drive,you will see atiflash on the list.
 
should i have drivers installed when i flash my bios or dos it even matter?
 
just chuck ATI flash (the exe and all relevant files) on the root of the drive. that way you dont have to navigate between folders.
 
ok well i flashed my bios but now my computer wont post with that GFXcard did the flash go bad? im using my new graphics card to post
 
i put 2 cards in reflashed bios and i dont think it worked when i go to gpu-z it says bios reading not supported on device when trying to copy them. but both bios do match
 
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