IBM 6648 Personal Computer User Manual


 
Flash recovery boot block jumper
Attention: If an interruption occurs during a Flash/BIOS upgrade, the BIOS
might be left in an unusable state. The Boot Block jumper enables
you to restart the system and recover the BIOS.
To perform a Flash/BIOS recovery using the recovery jumper, use the
following procedure.
1. Power-off the computer and remove the cover.
2. Move the system board recovery jumper to the clear position. Refer to
A20 system board layout (Type 6269)on page 146, A40/A40P system
board layout
(Types 6058/6059/6578/6579) on page 148, or to the label inside the
computer for more information.
3. Insert the upgrade diskette into the diskette drive.
4. Power-on the computer. The IBM Logo will appear.
5. When the Flash Update Utility appears, select the country/keyboard, then
press Enter.
6. If the computer serial number was previously recorded, the number is
displayed with an option to update it. Press Y to update the serial number.
7. Type the 7-digit serial number of the computer you are servicing, then
press Enter.
8. Follow the instructions on the screen to complete the flash (BIOS/VPD)
update procedure.
9. When you are instructed to reboot the computer, power-off the computer
and move the recovery jumper to the normal position. Then replace the
cover and power-on the computer.
Power management
Power management reduces the power consumption of certain components of
the computer such as the system power supply, processor, hard disk drives,
and some monitors. Advanced Power Management and Rapid Resume
Manager are features of some personal computers.
Automatic configuration and power interface (ACPI) BIOS
Being an ACPI BIOS system, the operating system is allowed to control the
power management features of the computer and the setting for Advanced
Power Management (APM) BIOS mode are ignored. Not all operating systems
support ACPI BIOS mode.
Advanced Power Management
Energy-saving settings can be viewed and changed by using the Advanced
Power Management menu in the Configuration/Setup Utility program.
Chapter 3. Types 6058/6059/6269/6578/6579 131