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    SubjectRe: Mounting a in-ROM filesystem efficiently
    ----- Original Message ----- 
    From: "Richard B. Johnson" <>
    To: "Bradley D. LaRonde" <>
    Cc: "Thomas Capricelli" <>; <>
    Sent: Thursday, December 13, 2001 1:02 PM
    Subject: Re: Mounting a in-ROM filesystem efficiently

    > Generally, ROM based stuff is compressed before being written to
    > NVRAM. It's uncompressed into a RAM-Disk and the RAM-Disk is mounted.
    > That way, you can use, say, 2 megabytes of NVRAM to get a 10 to 20
    > megabyte root file-system. This also allows /tmp and /var/log to be
    > writable, which is a great help because the development environment
    > closely approximates the run-time environment.

    That's perfect if you have plenty of RAM to spare.

    > FYI, generally NVRAM access is sooooo slow. I don't think you'd
    > like to use it directly as a file-system and access-time will be
    > a problem unless you modify the kernel.

    Modify the kernel how?


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