▁the ▁remaining ▁queue ▁of ▁user ▁data ▁to ▁the ▁storage ▁device , ▁refresh es ▁file ▁system ▁metadata , ▁then ▁rel in qu ishes ▁access ▁to ▁the ▁device ; ▁making ▁the ▁storage ▁device ▁safe ▁for ▁removal . ▁ ▁Norm ally , ▁when ▁the ▁computer ▁is ▁shut ting ▁down , ▁every ▁mounted ▁storage ▁will ▁under go ▁an ▁un mount ing ▁process ▁to ▁ensure ▁that ▁all ▁que ued ▁data ▁got ▁written , ▁and ▁to ▁preserve ▁integrity ▁of ▁file ▁system ▁structure ▁on ▁the ▁media . ▁ ▁Over view ▁ ▁A ▁mount ▁point ▁is ▁a ▁location ▁in ▁the ▁partition ▁used ▁as ▁a ▁root ▁filesystem . ▁ ▁Many ▁different ▁types ▁of ▁storage ▁exist , ▁including ▁magnetic , ▁magnet o - opt ical , ▁optical , ▁and ▁sem icon duct or ▁( sol id - state ) ▁drives . ▁ ▁, ▁magnetic ▁media ▁are ▁still ▁the ▁most ▁common ▁and ▁are ▁available ▁as ▁hard ▁disk ▁drives ▁and , ▁less ▁frequently , ▁flo ppy ▁dis ks . ▁ ▁Before ▁any ▁of ▁them ▁can ▁be ▁used ▁for ▁storage , ▁the ▁means ▁by ▁which ▁information ▁is ▁read ▁and ▁written ▁must ▁be ▁organized ▁and ▁knowledge ▁of ▁this ▁must ▁be ▁available ▁to ▁the ▁operating ▁system . ▁ ▁The ▁organization ▁is ▁called ▁a ▁filesystem . ▁ ▁Each ▁different ▁filesystem ▁provides ▁the ▁host ▁operating ▁system ▁with ▁metadata ▁so ▁that ▁it ▁knows ▁how ▁to ▁read ▁and ▁write ▁data . ▁ ▁When ▁the ▁medium ▁( or ▁media , ▁when ▁the ▁filesystem ▁is ▁a ▁volume ▁filesystem ▁as ▁in ▁RA ID ▁arrays ) ▁is ▁mounted , ▁these ▁metadata ▁are ▁read ▁by ▁the ▁operating