diskpart list disk select disk ( your case number ) list partition select partition ( your case number partition system UEFI / linux partition ) assign letter=b ( b another you want ) exit affter exit type b to file your created dir ( can you see EFI folder ) then, cd EFI dir ( for see the EFI folder linux your install ) rd parrot/s ( rd for remove , parrot your name linux/s ) and yes yeah completely unintsall