Re: [iPAQ] i don´t see my whole memory

On Tue, Feb 18 '03 at 12:02, Michael.Meyer@rtl.de wrote:
> Kernel 2.4.18-rmk3 on a Compaq H3600 with 64MB flash.
No H36xx has 64MB of flash, no iPaq has so much flash. But you might
have so much RAM.

> look at df -h: i have 64 MB internal-flash installed.
No, reformating your post:

> / # df -h
> Filesystem Size Used Available Use% Mounted on
> /dev/mtdblock/1 15.8M 11.6M 4.2M 74% /
> tmpfs 30.8M 64.0k 30.7M 0% /mnt/ramfs

that is 16M of flash (what sounds right for a 36xx)
and 64M of RAM (you get half your RAM as tmpfs)

> how can i use my whole memory of 64 MB and where is the rest?
who, what, which, where?? what was the question?

> how can i changed the tmpfs into a fixed memory (this huge memory has no
> data after a reset ;-( .
You can't, it's a ramdisk. it's gone after a reset. You could use a NVRD
(nonvolatile RAM disk), if you want to , google for it.

> under wince i was able to use the whole memory.
under linux you can, too. (and under wince you could not use the whole
memory to store programs in)

> / # free
> total used free shared buffers
> Mem: 63004 21788 41216 0 16
> Swap: 0 0 0
> Total: 63004 21788 41216
There you see, you have used 21M of your 64M (aktualy, you don't have
64M, only about 63M as some is used for the kernel, the framebuffer and
some other hardware that needs fixed buffers)

You need the RAM to run programs in (like you need RAM in your PC), some
of the RAM can be used as tmpfs (a RAMdisk) than you can no longer use
it for running programs (not quite correct, but close enough for this
discussion).

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