Method for inhibiting an executable program in a disk operating system by replacing the program with an unexecutable program

• US 5,155,827 A
• Filed: 03/17/1989
• Issued: 10/13/1992
• Est. Priority Date: 03/17/1989
• Status: Expired due to Fees

• Current Assignee: Boyd W. Ghering
• Original Assignee: Boyd W. Ghering
• Inventors: Ghering, Boyd W.
• Primary Examiner(s): Lee, Thomas C.
• Assistant Examiner(s): Coleman, Eric
• Application Number:
  US07/325,289
• Time in Patent Office: 1,306 Days
• Field of Search: 364/200 MS File, 364/900 MS File, 395/425, 395/700
• US Class Current: 726/31
• CPC Class Codes: G06F 21/121 Restricting unauthorised execution of programs

Abstract

A computer program, comprising a series of batch processes filed on a separte distribution disk, inhibits an executable program in a disk operating system (DOS). In one embodiment, the batch file of a process, unconditionally ineffective for replicating the functions of the executable program, is transferred from a distribution disk to the computer'"'"'s DOS and renamed with the filename of the executable program but with an externally executable extension. The DOS file of the executable program is transferred to the distribution disk and renamed with an externally unexecutable extension. In another embodiment, the batch file of the process is conditionally ineffective for replicating the executable program. The user is required to elect, to the exclusion of at least one designated drive in the computer, a drive on which the executable program can be executed.

Claims

1. A method for inhibiting an executable formatting file in a disk operating system installed on a hard disk of a computer having at least one external drive, comprising the steps of:

inserting into an external drive a distribution disk including an ineffective substitute file;

copying the formatting file from the hard disk to the distribution disk and removing it from the hard disk;

copying the substitute file from the distribution disk to the hard disk;

renaming the substitute file on the hard disk with the same filename as the removed executable file and an executable extension; and

removing the distribution disk containing the copied formatting file from the external drive.

2. A method according to claim 1 including the steps of:

specifying paths in the disk operating system to be searched for the formatting file; and

iteratively searching the specified paths for the executable file.

3. A method according to claim 1 further comprising:

reinserting the distribution disk containing the removed formatting file into the external drive;

copying the formatting file to the hard disk in the computer; and

copying the substitute file to the distribution disk.

4. A method according to claim 1 further comprising the steps of:

executing the substitute file when an attempt is made to execute said executable file;

displaying a program failure message when the substitute file is executed.

5. A method according to claim 1 further comprising the step of:

renaming the removed formatting file on the distribution disk with an unexecutable file extension.

6. A method according to claim 5 further comprising:

specifying paths in the distribution disk to be searched for the renamed formatting file; and

iteratively searching the specified paths for the renamed formatting file.

7. In a computer disk operating system installed on a hard disk of a computer having at least one external drive, a method for preventing use of an executable file in the computer, comprising the steps of:

inserting a distribution disk into said external drive;

copying to the hard disk an ineffective substitute file contained in said distribution disk;

causing the computer to search specified paths in the hard disk for the executable file;

copying to the distribution disk the executable file found in the search and removing said executable file from the hard disk;

causing the computer to rename the extension of the copied executable file for inhibiting execution thereof; and

causing the computer to rename the substitute file on the hard disk with the same filename as the executable file and an extension executable by the disk operating system.

8. A method according to claim 7 wherein said executable file comprises a formatting program.