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Method of creating CD-ROM image of files of different format with proper directories to be read by respective operating systems

  • US 5,359,725 A
  • Filed: 10/15/1991
  • Issued: 10/25/1994
  • Est. Priority Date: 10/15/1991
  • Status: Expired due to Term
First Claim
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1. A system for creating an image for placement onto a CD-ROM disc, said image being in a predetermined format capable of storing first files in a first format for use in a first operating system environment and second files in a second format for use in a second operating system environment, said predetermined format being different than said first format and said second format, said image including directory records, said first files in said first format for use in said first operating system environment and second files in said second format for use in said second operating system environment, said directory records containing predetermined information needed for accessing said first files and said second files, wherein said first files in said first format are incompatible with said second operating system environment and said second files in said second format are incompatible with said first operating system environment and said directory records when in said second format include file name errors and system area errors resulting from incompatibilities between said first operating system environment and said second operating system environment, said system comprising:

  • a) means for reading said first files, converting said read records to said second format and writing said converted first files onto a storage medium in said second format, wherein said writing creates directory records which are in said second format needed for accessing said first files, which directory records have said file name and system area errors caused by said incompatibilities between said first operating system environment and said second operating system environment;

    b) means for reading said second files and writing said read second files onto said storage medium in said second format, wherein said writing creates directory records needed for accessing said second files;

    c) means for reading said directory and said first and second files on said storage medium and creating said image for placement on a CD-ROM disc;

    d) means for creating a third file containing data necessary to correct said file name and system area errors within said directory records portion of said image introduced by said first file reading, converting and writing means;

    e) image correction means for reading said third file and said image and correcting said file name and system area errors in said directory records portion of said image, such that said first operating system is able to correctly access said directory and said first files on said CD-ROM disc.

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