System and method for controlling access to personal computer system resources

A software-implemented system for controlling access to a hard disk during a computer system initialization comprising:

• a modified master boot record written to a memory location on a hard disk corresponding to location for an original master boot record;
• a corrupted partition table written to a memory location on said hard disk corresponding to a location for an original partition table;
• an original partition table stored to a location on said hard disk different from said corrupted partition table;
• and
• a corrupted boot record written to a memory location on said hard disk corresponding to a location for an original boot record whereby said modified master boot record accesses previously stored information during system initialization to restore said boot record for system initialization.

A computer implemented method that prevents unauthorized access to a computer system, comprising the steps of:

• moving an original master boot record from its original location to a non-standard location in memory;
• creating a modified master boot record by storing a modified partition table in the modified master boot record that has different specifications than the original master boot record, said modified partition table containing specifications that prevents an operating system from booting from a diskette, thereby preventing access to computer system resources;
• storing the modified master boot record at the location corresponding to the original location of the original master boot record;
• and
• using said modified master boot record to control access to computer system resources.

A computer implemented method that protects a computer system from unauthorized access, comprising the steps of:

• accessing a boot record of a hard disk;
• changing the boot record data in a manner that prevents an unauthorized user from accessing the hard disk;
• and
• storing information that enables the original boot record data to be restored by an access protection program.