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Chapter7.Updatingsystemprograms
ThischaptercontainsinformationaboutupdatingPOST/BIOSandhowtorecoverfromaPOST/BIOS
updatefailure.
Usingsystemprograms
Systemprogramsarethebasiclayerofsoftwarebuiltintoyourcomputer.Systemprogramsincludethe
POST,theBIOS,andtheSetupUtilityprogram.ThePOSTisasetoftestsandproceduresthatare
performedeachtimeyouturnonyourcomputer.TheBIOSisalayerofsoftwarethattranslatesinstructions
fromotherlayersofsoftwareintoelectricalsignalsthatthecomputerhardwarecanexecute.Youcanusethe
SetupUtilityprogramtovieworchangethecongurationsettingsofyourcomputer.SeeChapter5“Using
theSetupUtility”onpage17
fordetailedinformation.
Yourcomputersystemboardhasamodulecalledelectricallyerasableprogrammableread-onlymemory
(EEPROM,alsoreferredtoasashmemory).YoucaneasilyupdatethePOST,theBIOS,andtheSetup
Utilityprogrambystartingyourcomputerwithasystem-program-updatediscorrunningaspecialupdate
programfromyouroperatingsystem.
LenovomightmakechangesandenhancementstothePOSTandBIOS.Whenupdatesarereleased,they
areavailableasdownloadablelesontheLenovoWebsiteathttp://www.lenovo.com.Instructionsforusing
thePOST/BIOSupdatesareavailableinaTXTlethatisincludedwiththeupdateles.Formostmodels,
youcandownloadeitheranupdateprogramtocreateasystem-program-update(ash)discoranupdate
programthatcanberunfromtheoperatingsystem.
Note:Youcandownloadaself-startingbootableCD/DVDimage(knownasanISOimage)ofthediagnostics
programtosupportcomputerswithoutadiskettedrive.Goto:
http://www.lenovo.com
Updating(ashing)theBIOSfromadisc
Thissectionprovidesinstructionsonhowtoupdate(ash)theBIOSfromadisc.Systemprogramupdates
areavailableat:
http://support.lenovo.com
Toupdate(ash)theBIOSfromadisc:
1.Makesuretheopticaldriveyouwanttouseissetastherstbootdeviceinthestartupdevicesequence.
See“Selectingorchangingthestartupdevicesequence”onpage19.
2.Makesurethecomputeristurnedon.Insertthediscintotheopticaldrive.
3.Turnoffthecomputerandbackonagain.Theupdatebegins.
4.Whenpromptedtochangetheserialnumber,pressN.
Note:Ifyouwanttochangetheserialnumber,pressYwhenprompted.Typeintheserialnumber
andthenpressEnter.
5.Whenpromptedtochangethemachinetype/model,pressN.
Note:Ifyouwanttochangethemachinetype/model,pressYwhenprompted.Typeinthemachine
type/modelandthenpressEnter.
6.Followtheinstructionsonthescreentocompletetheupdate.
©CopyrightLenovo2009,2012
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