Error Codes 50 to 99

       File not currently Assigned.

       Improper MSUS.

       Improper File Name.

       Duplicate File Name.

       Directory Overflow.

       File or Path not found.

       Improper File Type.

       End of File or Buffer.

       End of Record.

       Mass Storage Media Overflow.

       Incorrect Data Type.

       Illegal Mass Storage Parameter.

       Syntax Error during GET.

       Drive Not Found.

       Disk changed or not in Drive.

       Mass Storage unit not present.

       Write Protected.

       Sector not Found.

       Media not Initialized.

       READ Data Error.

       Checkread error.

       Mass storage system error.