Error 21! Format disk by mistake and a lot more ;)

[ChThC1991]

After 10 years of brake I bought 2 Xbox

So like in the title  

One I bought already chip moded Xbox  Xecutor2 3b pro  and Avalaunch 

when I turn off chip I don’t know why I’m was extra softmoded  Xbox 

when I was trying change size of the partition by mistake I formatted hard drive ( I have back up eproom) 

first he show me error 16

I was using second softmoded Xbox and chimp program to fix error 16 

in unlock disk with original eproom 

copy all partition c 

and later lock the hardrive 

now I have error 21 and I was trying everything and can fix this ;(  it’s any change to fix this Xbox 

he don’t wanna boot Hexen was trying 2018 and 2019