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saveimag.txt
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Documentation for SAVEIMAGE
Copyright (c)1998 by Tim Tesch
PURPOSE:
--------
SAVEIMAGE was written so that Geneve users could save images of
their hard drives (HFDC or SCSI) as files to _any_ device. Saving
the image to a file instead of to specific sectors on the hard drive
improves your chances of recovering from a sector zero error. Users
of CFORM who format to 34 sectors per cylinder will also be able to
restore their hard drives, something not possible with the embedded
MDOS Mirror command.
USAGE:
------
SAVEIMAGE is a small MDOS program used from the DOS prompt or within
a batch file as follows:
SAVEIMAGE <inputdevice> <outputfile>
E X A M P L E S:
----------------
Assumptions: A: = DSK1
E: = HDS1
F: = HDS2
G: = SCS1
SAVEIMAGE F: A:\SAVEHDS1 save image of HDS2. to file on DSK1
SAVEIMAGE G: F:\SAVESCSI1 save image of SCS1 to file on HDS2
SAVEIMAGE HDS1. HDS2.PLOP1 save image on HDS1 to file on HDS2
SAVEMAGE display help text
THE IMAGE FILE:
---------------
The image file contains sector zero and the accompanying bitmap. I
was tempted to simply save sector zero since you never know if the
bitmap is correct when restored... But I left it alone :)-
IF YOU TRY TO RUN THE IMAGE, IT WILL TELL YOU THAT IT IS AN IMAGE
----> AND IT WILL INFORM YOU WHICH HARD DRIVE THE IMAGE CAME FROM, the
DATE AND TIME CREATED, AND THE VOLUME NAME.
Here is how the IMAGE FILE is set up:
SECTOR DESCRIPTION
------ -----------
0 small bit of MDOS code, tells you that you are
trying to run an image.
1 This is sector zero of the hard drive
2-33 these are the bitmap sectors
RECOVERY:
---------
I did not release the LOADIMAGE program as I do not feel comfortable
releasing such a program without building in some security. I find
it would be TOO EASY for someone to overwrite their hard drive
bit map/sector zero using a simple utility.
*** If you would like me to release the program, let me know. Otherwise,
***** you need only format the first cylinder of your hard drive and copy
*** sector 1 from my image to sector 0 of the hard drive and so on...
WHERE CAN YOU REACH ME?
-----------------------
Address:
Tim Tesch
1856 Dixie Road
Port Washington, WI 53074
ttesch@juno.com
ttesch@execpc.com
* END OF DOCUMENTATION, 12 May 1998 @ 21:14:52