Method and apparatus for providing selective write protect regions in a storage medium
AssigneeFujitsu Limited
InventorsKoji Ozaki, Yasumasa Yoshida
Life of this patent
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Abstract
A method and apparatus to control copying of a group of data stored in an original information-storing medium into a destination information-storing medium. The method includes a step of reading attribute information of a first zone storing the group of data, where the attribute information indicates whether the zone is a ROM area or a RAM area, and a step of copying the attribute information to a second zone to which the group of data is to be copied. The method further includes a step of copying the group of data stored in the said first zone in the original information-storing medium to the second zone in the destination information-storing medium.
Claims18
A method to prevent inadvertent overwriting of a group of data copied from an original information-storing medium into a destination information-storing medium, each of these information-storing media having a disk for storing information, comprising the steps of:
- reading out attribute information of at least one first zone storing the group of data, said first zone being in the original information-storing medium, said attribute information indicating whether said first zone is a ROM area or a RAM area and said attribute information being provided in an area out of a user area, wherein at least one of said first zones in the original information-storing medium has said attribute information indicating a ROM area;
- copying said attribute information to a second zone to which the group of data is to be copied in the destination information-storing medium;
- and
- copying the group of data stored in said first zone of the original information-storing medium to said second zone in the destination information-storing medium.
A method to prevent inadvertent overwriting of data copied from an original information-storing medium into a destination information-storing medium, each of these information-storing media having a disk for storing information, comprising the steps of:
- reading out data stored in the original information-storing medium as well as attribute information of a region storing the data, said attribute information indicating whether said region is a ROM area or a RAM area and said attribute information being provided in an area out of a user area, wherein at least one of a plurality of such regions in the original information-storing medium has said attribute information indicating the ROM area;
- and
- copying the data and the attribute information to the destination information-storing medium.
An apparatus for copying an information-storing medium, the information-storing medium having a disk for storing information, comprising:
- means for reading attribute information of at least one first zone storing a group of data, said attribute information indicating whether said zone is a ROM area or a RAM area and being provided in an area out of a user area, wherein at least one of said first zones in the original information-storing medium has said attribute information indicating a ROM area;
- means for copying said attribute information to a second zone to which the group of data is to be copied;
- and
- means for copying the group of data stored in the first zone in the original information-storing medium to said second zone in the destination information-storing medium.
An apparatus for copying an information-storing medium, the information-storing medium having a disk for storing information, comprising:
- means for reading data stored in an original information-storing medium as well as attribute information of a region storing the data, said attribute information indicating whether said region is a ROM area or a RAM area and being provided in an area out of a user area, wherein at least one of a plurality of such regions in the original information-storing medium has said attribute information indicating the ROM area;
- and
- means for copying the data and the attribute information to a destination information-storing medium.
A method for copying data which prevents inadvertent overwriting of data from an original information-storing medium having at least a region specified by attribute information indicating a ROM area into a destination information-storing medium, each of these information-storing media having a disk for storing information, said method comprising the steps of:
- reading out attribute information of a destination zone of a storage medium, said attribute information specifying said destination zone as one of a RAM area and a ROM area;
- returning an error message if said attribute information of said destination zone specifies said destination zone as a ROM area;
- and
- reading out data from a target zone if said attribute information of said destination zone specifies said destination zone as a RAM area, and copying said data to said destination zone.
An apparatus for copying data from a target zone in an original information-storing medium having at least a region specified by attribute information indicating a ROM area, the apparatus preventing data inadvertent overwriting of data stored on a destination zone of a storage medium, the storage medium having a disk for storing information, said apparatus comprising:
- means for reading out attribute information of a destination zone of a storage medium, said attribute information specifying said destination zone as one of a RAM area and a ROM area;
- means for returning an error message if said attribute information of said destination zone specifies said destination zone as a ROM area;
- and
- means for reading out data from said target zone if said attribute information of said destination zone specifies said destination zone as a RAM area, and copying said data to said destination zone.
Dependencies are inferred from the claim text.