When formatting xbox will gamer tag disappear?

when you format your xbox, will your gamer tag disappear for good? Like can you re-use your gamer tag after formatting?When formatting xbox will gamer tag disappear?You'll never lose your GamerTag.When formatting xbox will gamer tag disappear?your gamer tag is your gamer tag.its on the MS servers so if you remember you account info it shouldnt dissapear unless you delete it. Unless you dont have XL you wont lose it.