***************** BHDD 3.1 *****************

This is a collection of tools for Windows 95/98 with support for hard disks
larger than 137 GB: fdisk, format, scandisk, defrag and improved driver for
ATA/IDE HDDs (ESDI_506.PDR).
Read this text for more details!

CAUTION:
This NEWer DEFRAG.EXE does NOT recognize/defragment DrvSpace/DblSpace
compressed/doubled drives/partitions!

The collection of programs patches Windows 98 SE to provide direct support
for hard drives larger than 137 GB.
In this complete set free development LLXX from forum MSFN is used,
And also updates utilities from Petr from forum MSFN are used.

REQUIREMENTS

BIOS support for hard drives > 137 GB.

INSTALLATION

Run _INSTALL.BAT. (This copy the patched ESDI_506.PDR to
WINDOWS\SYSTEM\IOSUBSYS; replace the SCANDSKW.EXE, DSKMAINT.DLL,
DEFRAG.EXE, FDISK.EXE, FORMAT.COM, SCANDISK.EXE, add CVTAPLOG.EXE;
copy all file to WINDOWS\COMMAND\BIGHDD ).
Reboot.
Use FDISK for create a partition and FORMAT for formats a disk.
These utilities are located in the directory WINDOWS\COMMAND and
WINDOWS\COMMAND\BIGHDD.

NEW WINDOWS INSTALLATIONS

If you are doing a clean install of Windows into a Computer where any of the
drives has a partition extending above the 137GB limit you must install the
patched ESDI_506.PDR before Windows has a chance to use it's unpatched driver.
Corruption may occur before you can complete the installation otherwise.
If the Windows partition itself is above the 137Gb limit it will DEFINTELY CRASH.

 1. Place the patched ESDI_506.PDR on a Bootable DOS Floppy Disk.
 2. Perform the Windows installation until the FIRST reboot.
    Do not leave the Computer unattended in case Windows reboots without
    prompting.
 3. Insert the Floppy Disk before Windows Reboots. If Windows Reboots without
    warning, insert the Floppy Disk as soon as the Screen goes Blank.
    Ignore any instructions to remove any Floppy Disks.
 4. Let Windows Reboot if it doesn't Reboot automatically.
 5. When DOS finishes Booting, copy the patched ESDI_506.PDR to
    WINDOWS\SYSTEM\IOSUBSYS;
 6. Remove the Floppy Disk.
 7. Press the Reset Button or CTRL-ALT-DEL.
 8. Continue the Windows Installation.
 9. When installation will end, run _INSTALL.BAT.

If you install a Windows update (MDCU or Unofficial Service Pack) that
replaces the ESDI_506.PDR file and have Partitions defined that extend above
the 137GB limit there is a possibilty of data loss anywhere on that drive.
This is due to a flaw in the original version of the ESDI_506.PDR file that
misinterprets sectors above the 137GB limit as being sectors below it.
If in doubt, rerun the patched ESDI_506.PDR driver BEFORE allowing Windows
to Reboot. If the Computer Reboots before you can run the Program, make it
boot in Safe Mode, run _INSTALL.BAT and Reboot again.
Or add a line

COPY/Y C:\WINDOWS\COMMAND\BIGHDD\ESDI_506.PDR C:\WINDOWS\SYSTEM\IOSUBSYS\ESDI_506.PDR >NUL

in the AUTOEXEC.BAT before the beginning of installation a Windows update.
After end of installation a Windows update this line can be removed.


HARD DRIVE SIZE LIMITS

The patched ESDI_506.PDR provides support for Hard Drives up to the
32 Bit Addressing Limit of 2048GB. Possible DOS, BIOS or Windows flaws may
limit support to 1024GB or less. Raw Disk access tools may have their
own limits.

PARTITION SIZE LIMITS

The size of individual Partitions are subject to additional limitations due
to FileSystem design and Partition management tools.