   USING the IOS.VXD update utility in Win95B (OSR2) and Win98
     
After loading Backpack Diskette Drive (or 16-bit Backpack Hard Drive)
software under Windows 95 or 98 all files after BPHDDRV.SYS are
"Missing or Corrupt" during reboot.

    Error While Initializing IOS: Windows Protection Fault
                                 

The above "Missing or Corrupt" errors may occur with early versions of
Backpack Diskette Drive's 16-bit device driver (BACKPACK.SYS) or
Backpack Hard Drive's 16-bit driver (BPHDDRV.SYS) in the CONFIG.SYS
of certain computers running the second release of Windows 95
(Win95B - OSR2 - Ver 4.00.1111 or Ver 4.00.1212) or either version
of Windows 98.  Only certain computers' BIOS revisions seem to exhibit
this failure.

This problem can be temporarily worked-around by turning off the
Backpack power and rebooting the computer.  After the computer has
successfully rebooted, the Backpack Drive will not be available.

Next, upgrade to the 32-bit driver which replaces the original 16-bit 
Backpack Hard Drive driver.  Important Note:  32-bit support is available 
for all Backpack Hard Drives with capacities of 850MB or greater.  Most 
Backpack Hard Drives with capacities lower than 850MB are not supported 
by the 32-bit driver.  16-bit driver software must be used instead.

* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 

You will also need to update the IOS.VXD file located in

\Windows\System\VMM32 if the message:
  
  "Error While Initializing IOS: Windows Protection Fault" 

or a similar message is displayed during reboot.  
  
       
 FOLLOW THESE INSTALLATION INSTRUCTIONS CAREFULLY TO UPDATE IOS.VXD
                                                                   
  1) Copy this patch file:  IOSFIX.EXE into the folder:
     C:\Windows\System\VMM32 
  2) From an MS-DOS prompt, change to the \Windows\System\VMM32 folder
     (by typing:  CD\WINDOWS\SYSTEM\VMM32 <enter>)
  3) Run the program: IOSFIX <enter> to update IOS.VXD 

Then, turn the Backpack back on and restart the computer.  The Backpack
should then be available and the computer should work properly.
