3.Followstep11andstep12in“Settingasupervisorpassword”onpage60toremoveyoursupervisor
password.
Harddisksecurity
Toprotectpasswordsfromunauthorizedsecurityattacks,severalofthelatesttechnologiesandalgorithms
areintegr atedintoUEFIBIOSandhardwaredesignofThinkPadnotebooks.
Tomaximizesecurity,dothefollowing:
1.Setapower-onpasswordaswellasaharddiskpasswordforyourinternalsolidstatedriveorharddisk
drive.Refertotheproceduresin“Power-onpassword”onpage56and“Harddiskpasswords”onpage
57.Forsecurity,alongerpasswordisrecommended.
2.IfaDiskEncryptionhar ddiskdriveandEncryptionsolidstatedriveisinstalledinyourcomputer,
besuretoprotectthecontentsofyourcomputermemoryfromunauthorizedaccessbyuseofdrive
encryptionsoftware.
3.Beforeyoudisposeof,sell,orhandoveryourcomputer,besuretodeletedatastoredonit.Referto
“Noticeondeletingdatafromyourharddiskdriveorsolidstatedrive”onpage61.
Note:TheharddiskdrivecanbeprotectedbyUEFIBIOS.
DiskEncryptionharddiskdriveandEncryptionsolidstatedrive
SomemodelscontaintheDiskEncryptionharddiskdriveorEncryptionsolidstatedrive.Thisfeature
helpstoprotectyourcomputeragainstsecurityattacksonmedia,NANDashordevicecontrollersbyuse
ofahardwareencryptionchip.Fortheefcientuseoftheencryptionfeature,besur etosetaHarddisk
passwordsfortheinternalstoragedevice.
Noticeondeletingdatafromyourharddiskdriveorsolidstatedrive
Ascomputersspreadintoeverycorneroflife,theyprocessmoreandmoreinformation.Thedataonyour
computer,someofwhichissensitive,isstoredonastoragedevice,eitheraharddiskdriveorsolidstate
drive.Beforeyoudisposeof,sell,orhandoveryourcomputer,makesuretodeletedatastoredonit.
Handingyourcomputerovertosomeoneelsewithoutdeletingtheloadedsoftware,suchasoper ating
systemsandapplicationsoftware,mightevenviolatelicenseagreements.Y ouareadvisedtocheckthe
termsandconditionsofthoseagreements.
Therearemethodsthatseemtodeletethedata:
•Movethedatatotherecyclebin,andthenchoosetheEmptyrecyclebincommand.
•UsetheDeletecommand.
•Formatyourharddiskdriveorsolidstatedrive,usingthesoftwareforinitializingit.
•Usingtherecoveryprogram,providedbyLenovo,bringtheharddiskdriveorthesolidstatedrivebackto
thefactorydefaultsettings.
Theseoperations,however,onlychangetheleallocationofthedata;theydonotdeletethedataitself.In
otherwords,thedataretrievalprocessingisdisabledunderanoperatingsystemsuchasWindows.The
dataisstillthere,eventhoughitseemst obelost.Thus,itissometimespossibletoreadthedatabyuseof
specialsoftwarefordatarecovery.Thereisariskthatpeopleofbadfaithmightreadandmisusethecritical
dataonharddiskdrivesorsolidstatedrivesforunexpectedpurposes.
Topreventleakageofdata,itbecomesveryimportantthatyoutakeresponsibilityfordeletingallthedata
fromtheharddiskdriveorsolidstatedrivewhenyoudisposeof,sell,orhandoveryourcomputer.Youcan
Chapter4.Security61