How can i get c: back from formatted

[gagcity]

i fomatted drive c: but i forgot, to bring it back.what is the command to retreive c: i tried sys c that didn't work. help!!!!

 

[ksiemb]

i fomatted drive c: but i forgot, to bring it back.what is the command to retreive c: i tried sys c that didn't work. help!!!!

What do you mean "I forgot to bring it back" ?
If you formatted the drive, you have no Operating system.