Mounting OZ initrd.bin

[Joshp]

How do you mount a JFFS2 filesystem on a linux box.  I relleay want to be able to mount the OZ
initrd.bin file and change some things around.  But so fair I havent been able to.  

JP

[Pyrates]

I don\'t know (I know I saw a thread about that somewhere, but I really can\'t remember where...), but if you find out how to make changes to a such an initrd, please tell me how you do it, i\'d really like to do that as well...

Cheers
Philipp

[Mickeyl]

Google for \'mtdblock mtdram jffs2\'

[Joshp]

Ok I am running Slackware 9.1 with kernel 2.4.22

cd /usr/src/linux (or where ever you kernel src is)
make menuconfig

Under:
Memory Technology Devices (MTD) mark as a module:  

Memory Technology Device Support
MTD partitioning support
MTD concatenating support
Direct char devive acess to MTD devices
Caching block device access to Mtd devices

Now under self-contained MTD device drivers mark as a module:
Test drivers using RAM
MTD emulation using block device.

Now go under file system on the main menu and make sure that JFFS2 support is marked as a module.

Now exit menuconfig and run:
make dep && make modules && make modules_install

You will need to up date your modules by ether running the module rc script are rebooting.

Now to mount the image:

modprobe mtdcore
modprobe mtdram total_size=32768 erase_size=256
modprobe mtdblock
modprobe jffs2
mkdir /dev/mtdblock
cd /dev/mtdblock
mknod 0 b 31 0
mknod 1 b 31 1
mknod 2 b 31 2
dd if=initrd.bin of=/dev/mtdblock/0
mount -t jffs2 /dev/mtdblock/0 /mnt/ozimage/

Ok ozimage is now mounted.

JP