lkml.org 
[lkml]   [1998]   [Dec]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    SubjectRe: Unswappable memory needed is user space
    From
    Date

    "Richard B. Johnson" <root@chaos.analogic.com> writes:
    >
    > As the disk-drive warms up, it's geometry changes. Data that was
    > written when the drive was cold will be on some place on a track,
    > maybe on the center, maybe on an edge. When the drive is at its
    > final temperature, new data will be written in a slightly different
    > place on the track.

    They (also) use the fact that data which has been on the disk for a while
    "prints through" deeper into the magnetic oxide covering. Apparently you
    can quite literally shave off the top of the oxide and read older data
    beneath.

    -
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to majordomo@vger.rutgers.edu
    Please read the FAQ at http://www.tux.org/lkml/

    \
     
     \ /
      Last update: 2005-03-22 13:46    [W:0.021 / U:0.124 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site