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Hard disk drive with write-only region

  • US 8,140,795 B2
  • Filed: 02/28/2005
  • Issued: 03/20/2012
  • Est. Priority Date: 02/28/2005
  • Status: Active Grant
First Claim
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1. A controller for a memory device having at least one write-only region, the controller executing logic comprising:

  • executing data writes into a portion of the write-only region; and

    designating the portion containing the data as a no access region to which any further write events and read events are prevented absent the input of a predetermined security code, the no access region growing at the expense of the write-only region in response to the execution of each of said data writes, wherein the memory device is a hard disk drive (HDD), and the HDD has at least one read/write region, wherein the write-only region is established by a series of blocks having consecutively numbered logical block addresses (LBAs);

    wherein the series of blocks defines a beginning block, an ending block, and a next block to be written, wherein initially the next block to be written is the beginning block, writes being executed to the write-only region starting at the next block to be written .

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