CMScan: A Program for Sector-by-Sector Scanning of Any Floppy Disk by Charles F. Martin Usage: CMScan is useful for examining the contents of a disk for text that remains on the sectors after a file deletion by DOS (since DOS only resets the first character of the file name and resets the File Allocation Table entries for the clusters previously used by that file, but does not erase the data itself). Security officers might find CMScan useful for confirming the absence of sensitive or classified plain-text information on a disk, including data inadvertently carried from the DOS I/O buffers into the slack space of the last sector of a file. CMScan first reads a disk from either floppy drive A or B, as chosen by the user, and makes an image of it on hard drive C. It then displays the first three sectors on the screen (track 0, head 0, sectors 1-3), and waits for you to page through the disk up or down to the next three contiguous sectors (PgUp or PgDn), to the next track (Ctrl-PgUp or Ctrl-PgDn), or exit (Esc). Running: At the DOS system prompt, just type CMSCAN. You will be shown an opening screen that may be cleared with a single keystroke. CMScan then asks you to press the letter, A or B, corresponding to the drive you want to scan a disk from, to insert the disk to be scanned into the drive, and press Enter. CMScan will then read the disk, first determining and informing you what disk format it is, and display the first three sectors. Press PgUp to go back to the previous three sectors, PgDn to go forward to the next three; Ctrl-PgUp to go back by one track, keeping the same sector and head, Ctrl-PgDn to go forward by one track. Press Esc to exit. CMScan will ask you if you want to scan another disk. Registration: CMScan is distributed as Shareware. It is not "freeware" or public domain software, but is made available to you, the user, for evaluation under the Shareware principle of "try before buy". If you use CMScan regularly, you are requested to register your copy. Registration fee is $5.00, and may be remitted to: Charles F. Martin NoVaSoft 3239 Riverview Dr. Triangle, VA 22172-1421 USA CMScan may be registered with the related utilities CMCopy and CMFormat as a package for $8.00. Author may be contacted by telephone at (703) 221-1833 or 221-1471, or by CompuServe E-mail [72130,1400]. Charles F. Martin is a member of the Association of Shareware Professionals (ASP). ASP wants to make sure that the shareware principle works for you. If you are unable to resolve a shareware- related problem with an ASP member by contacting the member directly, ASP may be able to help. The ASP Ombudsman can help you resolve a dispute or problem with an ASP member, but does not provide technical support for members' products. Please write to the ASP Ombudsman at 545 Grover Road, Muskegon, MI 49442 or send a CompuServe message via CompuServe Mail to ASP Ombudsman 70007,3536.