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WRT54GS volatile nonvolatile memory

Discussion in 'Cisco/Linksys Wireless Routers' started by CALGREG, Dec 9, 2004.


    CALGREG Network Guru Member

    Been reading, how the wrt54gs (which I bought recently) has 8mb non -volatile flash memory (2mb squashfs r/o and 6meg jffs2 r/w). Assuming that when you flash the router, that you are flashing the jffs2 and not the squashfs which since read only should never change?

    Now, also the box has 16mb regular volatile ram.. So, if you flash either sveasoft , hyperwrt, openwrt, etc to the box, you are replacingthe jffs2 ? When does the 16mb regular volatile ram come into play?

    If you want to install wallwatcher interface, kismet, upgrade busybox, etc , would they go to this area?

    Thank you very much. :)

    CALGREG Network Guru Member

    Does anyone have an update on this? I'm curious how either applying firmware or using openwrt perhaps will use the extra volatile ram, and what it's purpose is?

    Thank you.
  3. Guyfromhe

    Guyfromhe Network Guru Member

    i'm no expert but if someone who knows better wants to reply go ahead, i'm just taking a guess:

    The nvram area holds the firmware and the rest of the nvram is for configuration variables...
    the regualr ram is for the usual ram stuff running programs, etc it's also used as the /tmp directory as a ramdrive for storing temporary files programs may need, etc...

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