Use any hard disk with any BIOS
  Have you ever tried to install a new Harddisk
  in your PC and found that the BIOS did not
  support it?  I was faced with that situation
  lately.  I got advice to buy a new BIOS or to
  buy a special controller.  All of that costs
  $ and is a lot of hassle.  The BIOS might not
  be compatible with your Motherboard etc.
  This the problem WITHOUT additional Hardware.

  CLNDSK1.COM V 5.0  By RO-SOFT  - <ASP>
  Four functions to clean unwanted data
  from a disk. Fill all unallocated disk
  space "0" or "your string".  Fill the
  area of end file block not used with
  "0" or "your string".  Remove all the
  deleted directory entries.  Sort and
  store all directories.

  Disk Utilities By RO-SOFT Ver 5.0 - <ASP>
  Upgrade to work on any size drive partition
  A disk optimizer DEFRAG, permanent
  directory sort SORTDIR, error scan
  DISKSCAN, file recovery UNDELETE, double
  color dir list/print/all dirs DDIR, disk
  directory tree list/print TREE, locate
  files on any drive WHERE, repeat a command
  in all dirs REPTCOMM.

  ÖÄÄÄÄÄÄÄÄÄÄÄ´ DUFUL v1.20 ÃÄÄÄÄÄÄÄÄÄÄÄÄ·
  ºFirst wide release version of DUFUL,  º
  ºDave's Useful Freespace UtiLity.      º
  ºDUFUL will give you a bar graph of    º
  ºused space vs. free space on your hardº
  ºdrives.  Will auto scan all drives, orº
  ºyou can specify drives.               º
  ÈÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍͼ

  Enhanced Remove Directory 2.3
  Powerful program to remove a 
  directory with all its files,
  subdirectories, and their files.
  Full version. Reg fee: $5.00

  ESDI Identify v1.50: Returns info on all
  ESDI hard drives attached to your (286+)
  system.  Shows head, cylinder, sector
  counts, and other misc info.  Drive only
  needs to be hooked-up, does not need to
  be prepaired.
  (Date 12/07/92) Req: 286+CPU.
  Freeware from Micro House International. -AV

  SAFEPACK v1.5 Disk Defragmenter Mar 93  ASP
  Designed so that the data on the disk should
  be immune to interruptions from any cause 
  during defragmentation. Files and directories
  may be sorted into almost any order, and many
  other optimizations are possible.  SAFEPACK 
  leaves all the free space as a single area so
  a large Windows swap file may be created. 
  May be run in unattended mode. OS/2 supported
  Shareware:- 9 UK pounds or US$16.

  Stowaway from Patriquin  A true archival
  system for the PC which frees hard disk space
  by moving old or inactive files to floppy disks.
  Stowaway features data compression, auto disk
  formatting, and EASY restore! (Version 2.15)

  USEMGR V1.0 <ASP> --  Trim megabytes of
  unneeded files from your hard disk. Keep
  track of the number of times, and when, each
  file is used.  Select/print files to be
  backed up, deleted or archived based on this
  information.  View, Edit, Copy, Move, ZIP,
  etc from user modifiable menu.  This is a
  unique and powerful new tool.