how linux OS file system on mini/micro 2440 work?

Hi, 

We have new Micro2440. I want to know how linux OS file system on
mini/micro 2440 work? Is the file system already non-volatile (nor erased
when power off)? 

regards,
-aris

Hi,
the file-system is the way the Linux kernel write data on a storage device.
hence why file-system != storage device...

the mini have different storage devices on board and plugs to add some:
the nor flash (2meg ?)
the nand flash (128m-1g)
the ram (64m)
and the SD card or usb ....

and the kernel can use on those devices a LOT of file systems for example:
jffs2 or yaffs2 for the flash (compressed, non-volatile)
any fat, ext234, or anything else on SD or USB (UMS) (also non-volatile)
and a tempFS in ram (this on won't survive a reset ;)

have a nice day,

"Engineering without management is art." -- Jeff Johnson

Zogzog.

PS: the board feature also an eeprom (256b ?), but you won't need any FS
for that.

> the file-system is the way the Linux kernel write data on a storage
device. hence why file-system != storage device

Thanks for the correction.

> the mini have different storage devices on board

How many capacity it have? What default device it use?

-aris

hi,
For me the main storage of the board is the nand flash but many people use
a SD card as a storage for the root FS.

The nand flash is between 128meg and 1gig it depend on your board model.
With SD card it depend on the size of your SD (obviously), I've try with a
32gig card without any problems.

Zogzog.

PS: the mini can also have the kernel and root filesystem on another
computer, and boot via the network (over tftp & nfs).

> The nand flash is between 128meg and 1gig it depend on your board model.
With SD card it depend on the size of your SD (obviously), I've try with a
32gig card without any problems.

I prefer NAND flash to. I just need the little one to create tokyo cabinet
db, using for temporary persistent linked list, before I send them to
remote MySQL server.

> PS: the mini can also have the kernel and root filesystem on another
computer, and boot via the network (over tftp & nfs).

Yes, I have read it in the wiki. Thank's.

-aris

i have problem to flashing the rootfs file system in mini2440 please let me
know that

How do you want to flash it?  TFTP, NFS, SDcard, USB (DNW or usbpush).

Which tutorial are you trying to follow?

What have you managed to do?  Which bootloader are you using?