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1
Diskpack
Version 2.0
User's Guide
Represented in the U.K. by
Biologic Company The Thompson Partnership
7950 Blue Gray Circle 10, Church Croft,
Manassas, VA 22110-2829 Bramshall,
703-368-2949 UTTOXETER,
Staffs. ST14 5DE
0889 564601
2
Diskpack
Copyright and License Agreement 3
Introduction 5
Installation 7
Quick Start 9
Using Diskpack 11
Using dRestore 16
Notes 20
Site License 21
Your Turn 22
Copyright
License agreement
Disclaimer of warranty
Copyright This Diskpack documentation and the software
are copyrighted with all rights reserved. Under the
copyright laws, neither the documentation nor the software
may be copied, photocopied, reproduced, translated, or
reduced to any electronic medium or machine-readable form,
in whole or in part, without the prior written consent of
Biologic Company, except in the manner described in this
manual. The unregistered version of Diskpack and
accompanying documentation may be freely copied and
distributed.
Copyright (C) Biologic Company 1987,1988. 7950 Blue Gray Circle,
Manassas, VA 22110 USA
All rights reserved. First edition printed 1987. Printed in
the United States.
License agreement The terms of this license agreement
apply to you and to any subsequent licensee of this Diskpack
software. Biologic Company retains the ownership of this
copy of Diskpack software. This copy is licensed to you for
use under the following conditions.
o You may use the Diskpack software on any compatible
computer, provided the Diskpack software is used on only
one computer and by one user at a time.
o You may not provide use of the software in a computer
service business, network, timesharing, multiple CPU or
multiple user arrangement to users who are not
4
individually licensed by Biologic Company, except that you
may designate any employee to use such products on a
one employee per license basis.
Disclaimer of warranty Biologic company excludes any and
all implied warranties, including warranties of merchantability
and fitness for a particular purpose. Biologic does not make
any warranty of representation, either express or implied,
with respect to this software program, its quality,
performance, merchantability, or fitness for a particular
purpose. Biologic shall not have any liability for special,
incidental, or consequential damages arising out of or
resulting from the use of this program.
5
Introduction
Description
Advantages of Diskpack
File compression
Contents of the Diskpack disk
Requirements
Description Diskpack and dRestore are general purpose file
backup utility programs designed to replace the DOS Backup
and Restore commands.
You can use Diskpack to back up files from a hard disk or a
diskette to diskettes or any other DOS storage device
(including tape). Files are compressed as they are copied so
that they occupy less disk space on the backup disks than on
the source disk.
dRestore uncompresses and copies files from the backup
disks. You can also use dRestore to perform a file by file
comparison of the backup disks with the source disk.
Advantages of Diskpack
o Diskpack is much faster than the DOS Backup command.
On an IBM AT, Diskpack backs up 10 Megabytes of data
in about 4 minutes.
o Diskpack compresses files up to 80%. This means you can
back up a 20 Megabyte hard disk onto 4 floppies.
Diskpack compresses files more efficiently than the
"other" backup program, and does it faster. The "other"
program has a compression mode that runs slower than its
non-compression mode and only compresses about 25%.
Diskpack compresses files without sacrificing speed.
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o Diskpack is more reliable. It uses DOS to write files to
your backup disks. All other fast backup programs bypass
DOS and take direct control of your machine- a practice
that is generally considered risky. That's why they don't
work with some IBM clones or non-standard disk drives.
You can use Diskpack on all IBM and compatible PCs and
back up files to any DOS device (including tape).
File compression Diskpack uses a very fast proprietary file
compression method. The amount of compression is
dependent on file type- about 80% for database files, 60% for
word processing and worksheet files, and 25% for executable
files. Files which can be compressed the most will be backed
up the fastest.
Contents of the Diskpack disk The following files are
included in the root directory of the distribution disk.
diskpack.exe
diskpack.hlp
drestore.exe
drestore.hlp
There may also be a \FREEWARE directory which contains
unregistered versions of our other software products.
Requirements
o An IBM Personal Computer (PC, PC/XT, PC/AT, PS/2) (or
compatible).
o IBM Personal Computer Disk Operating System (DOS)
version 2.0 or greater (or compatible).
o Minimum 320K of conventional memory. Additional
memory will increase performance.
7
Installation
Procedure
Notes
To install Diskpack, create a new directory \DISKPACK on
your hard disk and copy the files in the root directory of
the distribution disk to it.
Procedure
1. Create a directory for the Diskpack files with the
command
md \diskpack
2. Put your distribution disk in drive A and type
copy a:\*.* c:\diskpack
3. Modify your AUTOEXEC.BAT file to include the
\DISKPACK directory in your PATH command. This allows
you to access the Diskpack program from any current
directory. For example,
path c:\;c:\diskpack
Notes
o Your \CONFIG.SYS file should contain a BUFFERS
statement allocating at least 16 disk buffers. This will
maximize the performance of your computer, not just
Diskpack. For example,
buffers=16
8
o The DOS VERIFY flag significantly increases backup time.
If you have a VERIFY ON statement in your
AUTOEXEC.BAT file, you should set VERIFY to OFF
before using Diskpack. With VERIFY ON, DOS performs
an operation following each disk write to verify that the
data just written can be read without error- it does not
verify that the data is the same data read from your hard
disk. If you really want to be safe, use dRestore to
perform a file by file comparison of your backups with
your hard disk.
o The first time you back up your hard disk, you must use
dRestore to perform a comparison of it with your backup
disks to ensure that Diskpack is compatible with your
system.
9
Quick Start
Backing up files
Comparing files
Restoring files
Notes
Backing up files To back up all of the files on your hard
disk, follow these steps.
1. You should have some formatted disks ready to use as
backup disks.
2. Type verify off
3. If Diskpack is on your hard disk, make the directory
containing the Diskpack program, DISKPACK.EXE, the
current directory.
4. If Diskpack is on a floppy disk, put it in drive A and
make drive A the current drive.
5. Type diskpack c:\*.* a:/s/v
Comparing files To compare the files on your hard disk
with your backup disks, follow this procedure.
1. If Diskpack is on your hard disk, make the directory
containing the dRestore program, DRESTORE.EXE, the
current directory.
2. If Diskpack is on a floppy disk, put it in drive A and
make drive A the current directory.
3. Type drestore a: c:\*.*/s/v
10
Restoring files To restore the files on your backup disks to
your hard disk, follow these steps.
1. If Diskpack is on your hard disk, make the directory
containing the dRestore program, DRESTORE.EXE, the
current directory.
2. If Diskpack is on a floppy disk, put it in drive A and
make drive A the current directory.
3. Type drestore a: c:\*.*/s/v/r
Notes Don't restore files unless you have verified that
Diskpack is compatible with your system by performing a
complete backup and compare.
11
Using Diskpack
Format
Options
Notes
Examples
Format The format of the Diskpack command is
[d:][path]DISKPACK [d:][path]filename[.ext] d: [options]
where
[d:][path]
before DISKPACK specifies the drive and path that
contains the Diskpack program.
[d:][path]
after DISKPACK specifies the drive and path that contain
the file(s) you want to back up (source).
filename[.ext]
specifies the file(s) you want to back up. Global file
name characters are allowed in the file name, and cause
all of the files matching the file name to be backed up.
d:
specifies the drive that will contain the backed up files
(target).
[options]
specifies optional parameters described below.
Options The following options can appear in the Diskpack
command.
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/?
Display help.
/1
Do not prompt to insert the first backup disk.
/A
Do not change the archive bit of each file copied.
Without this option, Diskpack clears the archive bit of
each file it backs up. When cleared, the archive bit
indicates that a file has not been changed since it was
backed up. Whenever DOS writes to a file, it sets the
archive bit to mark it as changed. Normally, you should
omit this option so that /M can be used to back up files
that have been modified since the last backup.
/B
Beep when prompted to insert a disk.
/C[[d:][path]filename[.ext]]
Create a catalog file containing a list of all the files
backed up. You can specify the name of the catalog file
(and a drive and path). If you don't, the file
DISKPACK.CAT will be created in the current directory.
You cannot put the catalog file on the backup disk.
The catalog file is a DOS text file and can be viewed
using a text editor or displayed on the screen with the
DOS TYPE command.
type diskpack.cat
/Dmm-dd-yy
Back up files that have been modified on or after the
specified date. The format of the date specified must be
mm-dd-yy.
13
/H
Include hidden files. This will cause all files marked as
hidden to be included on the backup disks. If you're
backing up the root directory, the DOS hidden files
IBMBIO.COM and IBMDOS.COM will be copied. You can
avoid restoring these files to a system using a different
version of DOS with the dRestore /P1 option.
/I
Display registration information (unregistered version
only).
/M
Back up files that have been modified since the last
backup. A file has been modified if its archive bit is set
(see option /A).
/P
Display a (y/n)? prompt before copying each file. You
can choose to back up the file or not.
/S
Back up subdirectory files in addition to the files in the
specified or current directory.
/V
Display a verbose description of the back up process.
/W
Prompt the user to press a key before reading source
file(s).
Notes
o Press Ctrl-Break to stop Diskpack.
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o New disks must be formatted with the DOS FORMAT
command.
o You can't back up to a hard disk.
o Files are backed up from the current directory if you do
not specify a path.
o Files are compressed as they are copied.
o You can't use the DIR command on backup disks. To get
a list of files, display the catalog file or use the dRestore
/D option.
o You can't use the COPY command to copy files contained
on backup disks.
o Use high quality disks.
o Do not use disks with bad sectors as backup disks.
Diskpack will check the File Allocation Table of each disk
and reject those that have clusters marked as bad.
o Diskpack erases files already present on the backup disks.
Examples The following example backs up all the files from
disk drive C to drive A.
diskpack c:\*.* a:/s
The following example backs up the file FILE.TXT from drive
C to drive A. A verbose description of the backup process
is displayed.
diskpack c:file.txt a:/v
15
The following example backs up all files from drive C that
have been modified since the date 01-01-88 to drive A.
diskpack c:\*.* a:/s/d01-01-88
The following example backs up all files from drive C to
drive A that have been modified since the last backup.
diskpack c:\*.* a:/s/m
The following example backs up all files in the current
directory to drive A and creates catalog file DISKPACK.CAT
in the current directory.
diskpack *.* a:/c
The following example backs up all files with an extension
WK1 in directory \123 and all subdirectories of \123 to drive
A.
diskpack \123\*.wk1 a:/s
16
Using dRestore
Format
Options
Notes
Examples
Format The format of the dRestore command is
[d:][path]DRESTORE d: [d:][path]filename[.ext] [options]
where
[d:][path]
before DRESTORE specifies the drive and path that
contain the dRestore program.
d:
specifies the drive that contains the backed up files
(source).
[d:][path]filename[.ext]
specifies the file(s) you want to restore and where you
want to restore them (target). Global file name
characters are allowed in the file name, and cause all of
the files matching the file name to be restored. The files
must be restored to the same directory they were in when
Diskpack copied them.
[options]
specifies the optional parameters described below.
Options The following options can appear in the dRestore
command.
/?
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Display help.
/1
Do not prompt to insert the first backup disk.
/B
Beep when prompted to insert a disk.
/D
Display file names only. This operation takes as long as
restoring files, since dRestore must uncompress the data
on the backup disks to obtain the file names. If you
created a catalog file when backing up, it's faster to
display its contents with the DOS TYPE command.
type diskpack.cat
/I
Display registration information (unregistered version
only).
/P1
Display a (y/n)? prompt before restoring a file if it is
hidden or has been changed since it was last backed up.
You can choose to restore the file or not.
/P2
Display a (y/n)? prompt before restoring each file. You
can choose to restore the file or not.
/R
Restore files. If /R is omitted, dRestore will compare the
files on the backup disks with the target disk- not
restore them.
/S
18
Restore subdirectory files in addition to the files in the
specified or current directory.
/V
Display a verbose description of the restore process.
Notes
o Press Ctrl-Break to stop dRestore.
o The files being restored must have been placed on the
source with Diskpack.
o dRestore isn't as fast as Diskpack. Diskpack's
compression method was developed to be as fast as
possible even though some of the techniques used to
increase compression speed actually decrease the speed of
uncompression. This is a good tradeoff since Diskpack is
used more frequently than dRestore.
o You don't have to start with disk 1 when restoring files.
If you want to restore a single file from a set of backups,
start with the backup disk that contains the file (the
catalog lists each file and its disk number). If dRestore
doesn't find the file, try starting with the previous disk.
o Before formatting your hard disk, you should back it up
completely, compare the backup disks with your hard disk
to be sure you have a good copy, and back it up again on
another set of disks.
o dRestore will automatically create directories on the
target disk if they don't already exist.
Examples The following example compares the files on the
backup disks in drive A with the files on drive C. The files
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are not restored.
drestore a: c:\*.*/s
The following example restores all files on the backup disks
from drive A to drive C.
drestore a: c:\*.*/s/r
The following example restores the file FILE.TXT from drive
A to drive C. A verbose description of the restore process
is displayed.
drestore a: c:file.txt/r/v
The following example restores all files from drive A that
were backed up from the current directory and prompts the
user before restoring each file.
drestore a: *.*/p2/r
The following example restores all files from drive A with
the extension WK1 that were backed up from the directory
\123 and all subdirectories of \123.
drestore a: \123\*.wk1/s/r
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Notes
o You must reformat backup disks if you wish to use them
for another purpose.
o The red light on the disk drive will remain on during disk
changes. It does not harm the disk or drive to open the
drive door when the light is on.
21
Site License
Diskpack can be licensed on a per location basis which allows
a company to use it on a network or use multiple copies of
Diskpack without purchasing them individually. Pricing is
dependent on the number of copies and is very reasonable.
Please contact Biologic for further information.
22
Your Turn
We value you opinions. Please let us know what you like
and dislike about the Diskpack program and documentation.
We're dedicated to developing the most innovative and useful
software available- and selling it at reasonable prices. Your
support helps make this possible.
Please send all comments and suggestions to either
Biologic Company The Thompson Partnership
P.O. Box 1276 10, Church Croft,
Manassas, VA 22110 Bramshall,
USA UTTOXETER,
Staffs
ST14 5DE
0889 564601
THANK YOU.