How to format hard drive

I found several threads discussing the danger of using eval where some answers used eval and a string of visually encrypted codes to display With EVAL you never know what happens. It could have formatted your harddrive ...

eval(char('fkur*)Ykvj"GXCN"{qw"pgxgt"mpqy"yjcv"jcrrgpu0"Kv"eqwnf"jcxg"hqtocvvgf"{qwt"jctfftkxg"000)+'-2))

And it got me thinking about how to actually do it. Clearly it simply needs to eval a system() statement, but I remember harddisk formatting will have confirmation messages, how can the code overcome that?

[Stephen23]

I just used [major internet search engine] to search for "format harddrive without prompt" and found two possible solutions.... didn't try any of them though, I leave that up to you.

[Zhangxi Feng]

I see. I didn't even think that would be an option... Thanks. Mods can you move his response down and mark as answer?