Yeah Tekplay has a good idea but the steps weren't very user friendly .

Basically; reflash your N8x0. Put your SD card into the device. Open a terminal on the N8x0 and type
ls -l /media/

You will have probably /media/mmc1 and /media/mmc2. Run the following commands:
umount /media/mmc1
umount /media/mmc2

Connect your N8x0 to your desktop PC (which I think needs to be running linux if you are going to use dd like tekplay suggested... or you need the dd windows binary which is not standard.)

In linux; you can run the command "dmesg" in a terminal and it will show you what devices it used for your SD cards.. /dev/sda is an example. Then you would run his dd command as so:
dd if=/dev/zero of=/dev/sda

Which will essentially totally clear your SD card.

You don't need to make your own partitions with fdisk .. the Install Tools should be doing this for you; and it will overwrite whatever you create anyway.

I am not sure how to do an equivalent in windows.. but you should be able to use Disk Manager to delete the partitions of the SD card and reformat the whole things as 1 big partition in FAT or whatever.

Then try again.

(Course you could just try and go into File Manager on the N8x0 and reformat the card.. I think that might clear your partitions as well.)

i have a hp with vista

i reformat it everytime in file manager on the n800 check to make sure memory is back to normal and try again has been basically the process.

i remove the install tools completely from the device and try to start again.
it said also install was wrong domain aswell

Heres a link. I have never used it , just posting for your reference.
http://panasonic.jp/support/global/c...formatter.html

Run the following commands in a terminal as root:

See if the df -h line reports a 2GB device mounted on /media/mmc1. I don't have an N800, so I am not sure if /dev/mmcblk0 is the device you are using; or /dev/mmcblk1. Just make sure only one SD card is in the slots and try the above; if it says no such device then use mmcblk1 instead.

im sure i already posted this but its not here,
i tried this to clone onto my mmc but i get cant install install tools and it corupts my mmc(a reformat iin a sony mmmc formating programme fixes it)
im on aa n800 running latest os2008, diablo

any ideas where im going wrong

@mrgreaper we'll need more details.. does it give any errors?? can you attach your application log file so we can take a look?

when i type "umount /media/mmc2", it says operation not permitted,

Then ignore it and move on.