Hard disk
Pigs, horses, cows, chickens, cocks, ducks (optional), donkeys (optional), sheep, goats, cats (optional), dogs (optional), bull, bunny (optional), turkey (optional).
no bond is not an optional money. A cheque can be a form of optional money.
no, it is optional
The Logical Volume Manager (LVM) system allows management of volume groups (VGs), physical volumes (PVs), and logical volumes (LVs).
The word problem was optional.
The opposite of compulsory (compelled) would be voluntary or optional.
The "mixing center" is optional
The optional sacraments are Marriage, Ordination, and Unction.
The math question was optional, but every one did it.
optional recovery number
what is optional recovery number