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- iHPFS
- An Installable
- HPFS Driver for DOS
- Copyright (c) 1993-94, Marcus Better
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- Version 1.13
- April 8, 1994
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- Overview
-
- The OS/2 operating system introduces a new file system, the High
- Performance File System (HPFS). HPFS has many advantages over the FAT
- system that DOS uses. However, it is usually impossible to access
- files on an HPFS partition unless the computer has booted in OS/2.
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- iHPFS makes it possible for OS/2 users to reach files and directories
- on their HPFS partitions when they boot with plain DOS. The HPFS
- partition is assigned a drive letter, and can be accessed like any DOS
- drive - although the current version of iHPFS is restricted to read-
- only access.
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- iHPFS is easy to install and convenient to use, as it acts like any
- DOS drive. Files and programs on the HPFS partition may be read and
- executed, or copied to another drive.
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- Disclaimer and License Agreement
-
- iHPFS is supplied as is. The author disclaims all warranties,
- expressed or implied, including, without limitation, the warranties of
- merchantability and of fitness for any purpose. The author assumes no
- liability for damages, direct or consequential, which may result from
- the use of iHPFS.
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- You may copy iHPFS on the following conditions: iHPFS must be copied
- in unmodified form, and this documentation, also unmodified, must be
- included in the copy.
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- You may give iHPFS to your friends or post it for downloading on
- bulletin boards only as long as the above conditions are met.
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- System requirements
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- In order to run iHPFS, you need
- - a 386 processor or better
- - a computer running MS or IBM DOS 4 or later
- NOTE: iHPFS won't work under DR-DOS and some other
- OEM versions.
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- It is also nice if you have an HPFS partition, otherwise all you'll
- get from iHPFS is an error message.
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- It is important that the DOS version is 100% compatible with MS-DOS or
- IBM DOS. iHPFS makes no attempt to identify the OEM, and the program's
- behaviour may be unpredictable under DR-DOS and other operating
- environments which are not 100% compatible.
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- How to use iHPFS
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- Run IHPFS.EXE from the DOS prompt. The syntax is:
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- IHPFS [d:][n] [/C=x] [/U]
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- The brackets indicate an optional parameter.
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- d: The drive letter that you want to assign to iHPFS. If this
- parameter is omitted, iHPFS will find the first available
- drive letter.
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- n The number of the HPFS partition (1-9) that you want to
- access. If this parameter is omitted, iHPFS will assume the
- first HPFS partition in the system.
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- HPFS partitions are numbered (logically) so that you can
- specify to iHPFS which partition you want to access. The
- first HPFS partition on the first hard disk is partition
- number 1. Note that only HPFS partitions are counted - if
- your system has two HPFS partitions, they will have numbers 1
- and 2, regardless of any other non-HPFS partitions you might
- have.
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- /C=x This option tells iHPFS to set up a cache in XMS memory. A
- cache can improve performance dramatically. x specifies the
- cache size, in KB, and is not optional. To use this option,
- you must have an XMS driver like HIMEM.SYS loaded.
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- /U The /U option will uninstall an iHPFS drive. When this option
- is used, a drive letter must also be specified. Running iHPFS
- with the /U option removes the specified drive, and unloads
- most of the driver from memory. A few hundred bytes will
- still remain in memory, though.
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- iHPFS will display the message
- Installed as d:
- if the installation was successful.
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- Filenames
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- The HPFS allows filenames longer than the FAT's 8+3 characters. With
- iHPFS, files with long names will be invisible, just like in the OS/2
- DOS box.
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- Some characters that are allowed in HPFS filenames may not be allowed
- in DOS. Any filename containing such characters will also be invisible
- with iHPFS. For example, filenames containing spaces will be hidden.
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- Contacting the author
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- You are welcome to contact me if you have any tips, suggestions or
- ideas for iHPFS. If you have found any bugs, please let me know. I can
- be reached on Fidonet at 2:201/2120.1.
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