Solution:

We get this report from our branches and confirm this issue happens with SiS 55781 chipset only. Checking with SiS and we get a bug-fix driver from SiS. Following is the detail installation procedures to install the driver if your hard drive does not have any partition on it. User can get the driver (571W98.EXE) from SiS web site (www.sis.com.tw). (A)With DOS 6.22 bootable disk: 1.Boot up with DOS bootable disk, execute FDISK to assign the primary partition. 2.Reboot and format hard drive by FORMAT command with "/S" argument. 3.Install DOS 6.22 (3 diskettes) on your hard drive. (option) 4.Copy and execute SiS IDE driver (571W98.EXE) to extract 4 files to root directory of your hard drive. 5.Execute SIS98.EXE and it will create SIS98 directory with modifing AUTOEXEC.BAT. 6.Make sure that both SISFIX.EXE and SISIDEFX.VXD exist in the SIS98 directory after step 5. "C:\SIS98\SISFIX.EXE" must be includede within AUTOEXEC.BAT. 7.Insert Windows 98 installation disk and following the prompt to finish the installation. 8.Remove the line "C:\SIS98\SISFIX.EXE" in the AUTOEXEC.BAT after installing Win98 successfully. (B)With Windows 98 installation disk ONLY: 1.Boot up with Windows 98 installation disk and follow the prompts to configure your hard drive. After rebooting. Windows 98 will format the hard drive automatically. 2.System will prompt you with a message as "Press Enter to continue setup the Win98 or Escape to exit" if format is finished, please press "Escape" to exit and system will reboot again. 3.Press "F5" to prompt "A" drive while "Starting Windows 98" is shown on screen, copy the COMMAND.COM from Windows 98 installation disk to root directory of hard drive. 4.Follow step 4, 5, 6, 7, and 8 in section (A) to finish the installation