Dell Server System BIOS, A01

PowerEdge SC420, BIOS, A01

Fixes & Enhancements

The following changes have been made to the A00 to create the A01:

1. Corrected SMBIOS reporting of high speed CPUs
2. Improved boot list management
3. Improved setup handling of 'ESC' key
4. Added a warning when changing the SATA controller mode
5. Corrected password entry on international keyboards
6. Corrected SMBIOS reporting of PCI-Express slots
7. Added support for newer CPUs
8. Improved USB hotplug detection
9. Clarified diskette drive failure message
10. Improved remote wake support
11. Added support for USB remote control devices that respond as keyboards
12. Improved PCI address space allocation
13. Added failure handling if installed video card incompatible with setup
14. Improved support for PCMCIA devices
15. Fixed a problem with very small hard drives (under 528MB) not working
16. Improved detection of PATA optical devices
17. Improved BIOS flash update support
18. Corrected parity errors in the simple boot flag byte


Version A01, A01



Release date

22 Jul 2005

Last Updated

03 Nov 2011


Available formats

File Format:Windows/DOS
File Name:SC420A01.EXE
Download Type:HTTP
File Size: 585 KB
Format Description:This file format consists of a BIOS executable file. The Universal (Windows/MS DOS) format can be used to install from any Windows or MS DOS environment.
To ensure the integrity of your download, please verify the checksum value.
Not available
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By downloading, you accept the terms of the Dell Software License Agreement.

Applies to
Server System BIOS
Installation instructions
Custom Instructions for SC420A01.EXE:

BIOS Soft Instructions:

1. Click the "Download Now" link to download the file.
2. If the Export Compliance Disclaimer window appears, click the "I agree" link to accept the agreement.
3. When the BIOS flash utility has completed you will be prompted to restart your computer. Click Yes..

Flashing the BIOS:
1. Browse the location where you have downloaded the file and double click the new file to run the BIOS flash program.
2. The BIOS flash utility window appears, click continue.
3. When the BIOS flash utility has completed you will be prompted to restart your computer. Click Yes.
4. BIOS flash Compete.
Warning: Do not turn off your computer or disconnect from your power source while updating the BIOS or you may harm your computer. During the update, your computer will restart and you will briefly see a black screen.

This driver has been tested by both the independent software vendor (ISV) and Dell on the operating systems, graphics cards, and application supported by your device to ensure maximum compatibility and performance. Details

Dell recommends the customer review specifics about the update to determine if it applies to your system. The update contains changes that impact only certain configurations, or provides new features that may/may not apply to your environment.