Format of command:
X>clean [drive:]
If no drive is specified, CLEAN assumes you want to work on the default drive, else drive a:, b:, etc. When it is through you are asked if you want to clean any other drives, and if so prompts for the drive letter.
This works on single or double sided or quad density drives without modification and naturally will not accomplish too much on your fixed disk. No harm will come, however, if it is run on your fixed or floppy disk as it uses the PC-DOS absolute sector READ to move the head around the disk.
The reason you use a cleaning utility rather than using DIR or any other command to get the disk moving is that since the disk in the drive is paper, the head will never get past Track 0 where DOS goes for the directory in order to try to accomplish your command. In other words you will never use more than 2.5% of the surface of your cleaning disk. CLEAN knows there is a cleaning disk in the drive, ignores the DOS error message that the READ has failed, and tries to read another sector on another track. This way the head is moved about the disk and more effectively cleaned.
Cleaning your disk drive is good preventive medicine, but don't overdo it. A drive that is in heavy use probably needs to be cleaned once a week, but on the average once every other month is plenty.
The reason for the 2 in CLEAN2.COM is that this is the second version of this program. At the time I wrote CLEAN I only had single-sided drives and was not able to test CLEAN with double-sided. Thanks to a User Group Librarian I was set straight on this and have improved CLEAN. Users of the older version may remember a patch I had provided for working with DSDD drives. This patch was not needed. I am sorry for the inconvenience caused by this and present this better working version.
CLEAN now times in closer to the recommended 30 seconds for
cleaning a disk. It also uses a random factor to start its
journey across the surface on different tracks. Since it uses
only the most basic of MS-DOS functions, it should run on any
MS-DOS computer.
Program by:
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Marty Smith 310 Cinnamon Oak Lane Houston, TX 77079 |
SOURCE ST2259 / COMPUSERVE 12155,1214 (713) 661-1241 [Office] (713) 464-6737 [Home] |
[At my request, Marty has modified the program so that it will work on any drive letter, so those of us with add-on quad disks can be next to godliness, too. Don't try sticking a cleaning disk in your RAM drive, though! R. Jueneman/SYSOP/(703) 237-4322]
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Theft by deception as a way of life . . .
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As Described By Rutgers University’s Bloustein School of Planning and Public Policy |
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The 2001 Race for Governor of New Jersey |
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New Jersey Fact: "New Jersey is a small state on the eastern seaboard halfway between Honest John Lindsay and the Liberty Bell. It is best known for its turnpike, Atlantic City, Imamu Baraka, Newark Airport and the Morro Castle disaster. Most of its leaders are in jail for stealing money...." Over thirty years ago, this was how a New York Times writer described New Jersey. The only things that have changed are that now Bloomberg has Lindsay's old job and Amiri Baraka figured out somewhere along the line that it's not too swift for an atheist to use a religious title. |
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