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WDR Computer Club Digital 1996 October
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CLUB10_96.BIN
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invirc
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IV-UTILS.TXT
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1996-06-08
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The InVircible Utilities
------------------------
The utilities in this package are rarely used in IV's daily operation.
Yet they facilitate performing certain tasks, that otherwise may
require the use of an ASCII editor or of a disk management utility.
NOCMOS
------
The CMOS setup parameters are backed up by InVircible the first time
IVINIT runs from the autoexec. On every subsequent booting, the current
CMOS configuration parameters are compared by IVINIT to those stored in
the CMOS.NTZ file. If a change in configuration is detected, then the
user is alerted.
There are instances where multiple CMOS configurations are used, for
example with notebooks, when docked or as a stand alone machine. In
these cases the user may wish not to be bothered with the CMOS check
every time the computer is booted. IVINIT will skip the CMOS test when
invoked with the /NOCMOS switch.
The NOCMOS utility edits the C:\AUTOEXEC.BAT file to enable, or disable
the IVINIT CMOS test. Running NOCMOS E will enable the CMOS test, while
running NOCMOS D will disable the CMOS test in the autoexec.
FIND-SIG.
---------
InVircible creates an integrity database that consists of a signatures
file in each directory that contains binary-executable files. The
filename of these signatures may contain high ASCII (unprintable)
characters. Especially if the installation of IV was performed with
IVLOGIN, with the random filename option ON (IVLOGIN /RANDOM). The
purpose of the hi-ascii characters in the filename is to protect the
database from being accidentally erased. The first three characters of
the signature filename are always printable alphanumerics, so that they
can be handled from DOS, when using the "?,*" wildcards.
Many users depend on Windows and on its file manager. To their dismay,
Windows is unable to handle files which's name contains high ascii
characters. Most users ignore that Windows is handicaped in this
aspect. If you read this file wth a DOS viewer then you'll be able to
see in the following "αßΓπ" the sequence of four Greek characters
starting with alpha (ASCII 224). Yet under windows you probably see
only underscores, or maybe just one character, but not all four.
FIND-SIG is a housekeeping utility. It will find and remove inactive or
orphan IV signature files which you may have lost for whatever reason.
Just type FIND-SIG and the drive name that you wish to scan (the
default is the current drive). FIND-SIG will prompt the user on any IVB
inactive signature file that it finds and ask if to skip the file,
erase it, or erase all the orphan IVB files that it finds.
FIND-SIG can also be used to cleanup periodically from the IVB.000
backup signatures. Another usage of FIND-SIG is to remove all IVB
signatures left after uninstalling InVircible from a computer.
GET-HD
------
GET-HD will display the CMOS setup and the IDE parameters of the two
first hard drives installed in a computer. For SCSI and MFM drive it
will display the hard drive parameters found in the BPB (bios
parameters block). The parameters shown by GET-HD are written in the
HD_DATA.NTZ file, created on the rescue diskette at the time of its
preparation.
These parameters can be useful in disaster recovery scenarios or when
asking for assistance from the IV online support.
SWAPBOOT.
---------
There are instances in which you may want to swap roles between the
physical floppy in drive A and B, without needing to open the
computer's cover. For example, you may need to boot from a floppy that
suits drive B's format, not drive A.
SWAPBOOT will install a special boot sector to a floppy in drive A.
When booted from, it will prompt with several options. The default is
booting from the hard drive, after a predetermined delay, even if the
floppy is left in drive A.
If F2 is pressed during the boot delay sequence, then drive A and B
swap roles. The BIOS will seek for a bootable diskette in drive B, and
boot from, if there is one. After booting, physical drive B will be
assigned as A for ALL purposes, including formatting etc., and physical
A will become B. Until rebooting the machine.