Acer Aspire 5942 Service Guide

Chapter 229
Boot
This menu allows the user to decide the order of boot devices to load the operating system. Bootable devices 
includes the USB diskette drives, the onboard hard disk drive and the DVD drive in the module bay.
Item Specific Help
Use < > or < > to select
a device, then press
 to move it down the
list, or  to move
it up the list. Press
 to escape the menu
F1
ESCHelp
ExitSelect Item
Select Menu
Change Values
Select SubMenu
EnterF9
F10Setup Default
Save and Exit
Boot priority order:
1. IDE0 :...

30Chapter 2
Exit
The Exit screen allows you to save or discard any changes you made and quit the BIOS Utility.
The table below describes the parameters in this screen.
ParameterDescription
Exit Saving Changes Exit System Setup and save your changes to CMOS.
Exit Discarding 
ChangesExit utility without saving setup data to CMOS.
Load Setup Default Load default values for all SETUP item.
Discard Changes Load previous values from CMOS for all SETUP items.
Save Changes Save Setup Data to CMOS.
Item Specific...

Chapter 231
BIOS Flash Utilities
The BIOS flash memory update is required for the following conditions:
• New versions of system programs
• New features or options
• Restore a BIOS when it becomes corrupted. 
Use the Phlash utility to update the system BIOS flash ROM.
NOTE: If you do not have a crisis recovery diskette at hand, then you should create a Crisis Recovery 
Diskette before you use the Phlash utility.
NOTE: Do not install memory-related drivers (XMS, EMS, DPMI) when you use the Phlash.
NOTE:...

32Chapter 2
DOS Flash Utility
Perform the following steps to use the DOS Flash Utility:
IMPORTANT:Use USB KEY, USB HDD, DVD-RW, and HDDs that can boot to DOS mode.
1.Press F2 during boot to enter the Setup Menu.
2.Select Boot Menu to modify the boot priority order, for example, if using USB HDD to Update BIOS, move 
USB HDD to position 1.
3.Execute the FLASH.BAT batch file to update BIOS.
4.In flash BIOS, the message Please do not remove AC Power Source displays. If the AC power is not 
connected, the...

Chapter 233 

34Chapter 2
WinFlash Utility
Perform the following steps to use the WinFlash Utility:
1.Double-click the WinFlash executable.
2.Click OK to begin the update. A progress screen displays.
3.When the process is complete, close all programs and applications and reboot the system. 

Chapter 235
Remove HDD/BIOS Password Utilities
This section provide you with removing HDD/BIOS password method:
Remove HDD Password:
If you key in the wrong HDD password three times, an error is generated.
To reset the HDD password, perform the following steps:
1.After the error is displayed, select the Enter Unlock Password option on the screen.
2.An Encode key is generated for unlocking utilities. Note down this key.
3.Execute the UnlockHD.EXE file to create the unlock code in DOS Mode using the format...

36Chapter 2
Removing BIOS Passwords:
To clear the User or Supervisor passwords, open the RAM door and use a metal instrument to short the J4 / J5 
jumper as shown below.
Cleaning BIOS Passwords
To clean the User or Supervisor passwords, perform the following steps:
1.From a DOS prompt, execute clnpwd.exe
2.Press 1 or 2 to clean the desired password shown on the screen.
The onscreen message determines whether the function is successful or not.
J4
J5 

Chapter 237
Using Boot Sequence Selector
The Boot Sequence Selector allows the boot order to be changed without accessing the BIOS. To use Boot 
Sequence Selector, perform the following steps:
1.Enter into DOS.
2.Execute BS.exe to display the usage screen.
3.Select the desired boot sequence by entering the corresponding sequence. For example, enter BS2 to 
change the boot sequence to HDD | CD ROM | LAN | Floppy. 

38Chapter 2
Using DMITools
The DMI (Desktop Management Interface) Tool copies BIOS information to eeprom to be used in the DMI pool 
for hardware management. 
When the BIOS displays Verifying DMI pool data it is checking the table correlates with the hardware before 
sending to the operating system (Windows, etc.).
To update the DMI Pool, perform the following steps:
1.Boot into DOS.
2.Execute dmitools.exe. The following messages are displayed on the screen to prompt the dmitools 
mode.
• dmitools /r ==>...