BIOS Boot-CD

Howto: BIOS-Update per bootable CD

BIOS Update per bootable CD under DOS

A guidance how to create a Boot-CD (which contains the Freeware version of Caldera DR-DOS v7.03) to perform a BIOS update.

see also: BIOS-Update Howto: step-by-step instruction
see also: BIOS Update per bootable USB-Stick
see also: BIOS Update per DOS-Boot-Diskette

The following tools are needed:

• CDBurnerXP - free CD-Burning software, Download from manufacturer's website
• UltraISO - Trial version, Download from manufacturer's website
• Ultimate BIOS-Boot-Edition:
  - drdos.img (the boot image file contains the 3 DR-DOS system files command.com, ibmbio.com und ibmdos.com)
  download [1] Ultimate BIOS-Boot-Edition - 5.9MB, Download via uploaded.to
  download [2] Ultimate BIOS-Boot-Edition - 5.9MB, Download via megaupload.com

Instruction to create a bootable CD

• Tip: use - if possible - a rewritable CD-RW.
• Open the Ultimate BIOS-Boot-Edition and extract the boot image file (folder boot_cd) drdos.img.
• Install and start the Trial version of UltraISO.
• Open the boot image file drdos.img with UltraISO.
• Rename the filename of your flashtool and the BIOS file, if they have more than 8 characters (not the file extension!).
• Copy the flashtool and BIOS file (with Drag&Drop) to the other existing files (see picture).
• Save the boot image file and close UltraISO.
  
• Start CDBurnerXP and choose Data disc:
  
• In the CDBurnerXP main menu Disc choose the entry Boot options...
• In the following window (see picture) enable the checkbox Make disc bootable and insert the path to your boot image file drdos.img.
• Change the Emulation type to Floppy 2.88MB.
  
• Click the OK-Button to close this window.
• Now you can use Ctrl+B to burn the CD.

Starting the BIOS-Update from CD-ROM

• First, go into your BIOS-Setup and change the Bootsequence to CD-ROM (search for an option like Bootsequence, First Boot Device, or something similarly).

• Insert the CD and restart your PC. If all went well - DR-DOS starts and you can see the famous DOS-Prompt (A:\>).

• Now you can start the BIOS update, but remember: you can't backup your old BIOS version onto a CD! But if your harddisk has a FAT16- or FAT32 partition, it would be a good idea to copy your 2 BIOS files to this partition, and to start the update/backup from your harddisk.

• See also: BIOS-Update Howto: step-by-step instruction

Happy flashing!