Editing the read-only parts of an image

[Devilfish]

If you want to add fonts, just upload them to /var/tuxbox/config/enigma/fonts

Adding a font would not cause the image to hang. Looking for a font that's not there would.

Are you sure you flash erased /dev/mtd/5 and not /dev/mtd/3?

[ajeeb]

hi
I know that we can upload /var/tuxbox/config/enigma/fonts
but only case to test
about flash erased /dev/mtd/5 and not /dev/mtd/3
I do steps above if it cause the problem I will check that with older versions

/dev/mtd/3 - is bootloader then need jtag

Thanks @Devilfish

[ajeeb]

@Devilfish hi
maybe this cause the problem? to get it works?

root@dreambox:/tmp> tar -cf root.tar root       
tar: Names longer than 100 chars not supported
tar: Names longer than 100 chars not supported. 
tar: Names longer than 100 chars not supported.

br

[mat989]

Devil: I have some questions.

1. What is /dev/mtdblock/5? There is also /dev/mtdblock/6 in the rcS file.

2. If I am going to replace the "bild" file, does that mean i need to apply your method, but instead of mounting /dev/mtdblock/5 in read-only-mode, i shall mount /dev/mtdblock/6 ?

3. In summary what you did is this:

• Dreambox: Backup the section you want to edit
• Dreambox: Transfer the backup file to your linux box
• Linux Box: Extract the backup file and edit the files
• Linux Box: Generate the squashfs file and transfer the file to the dreambox
• Linux Box: Replace the old section with the updated file and reboot the dreambox "How is this going to work? You are still in read-only mode?!! I shall try it first!"

thnx...

[Devilfish]

If you type more /proc/mtd it will show you the different memory locations on the dreambox.

mtd5 is the SquashFS section that we want to edit. This is all the folders that you see when you ftp to the box, except /var and /tmp.

So we extract mtd5 from the box, transfer it to our linux PC, edit it as you like and then recompile it back into an mtd5.img. Transfer the mtd5.img back to the box and flash it again. You are not flashing the complete image, only the mtd5 memory location. So now the complete image on the dreambox should have your edits.

In the DK images, the bild file is in /bin so you can easily edit it using this method.

@ajeeb, I completed that command without any problems on my dreambox. (see pic)

[mat989]

thnx...

I am using Gemini 4.6. The bild file is in the root file. root gets mounted at boot time to show the image , and then unmounted

mount -t cramfs /dev/mtdblock/6 /root -o loop
/bin/showlogo /root/root/platform/kernel/bild
umount /root

I tried to mount it rw but w/o success. I am using putty and winscp

[Devilfish]

Try backing up mtd6 instead of mtd5.

[mat989]

thnx... i am testing it at the moment...

i backed up mtd6 and i am currently editing the root

will get back to you with the results

[mat989]

hmmm... the box is dead! I am flashing back with DreamUP....

[satman]

hmmm... the box is dead! I am flashing back with DreamUP....

always get serial debug log so you have idea where you went wrong
post results of a "cat < /proc/mtd" see what the mtd partitions mounted are after you reflash back the gemini.

regards

[viper76]

Hi
I have found a sloution for the blank screen or the dead box

after you have produce mtd5.img do a Factory reset on the db wait for the db to reboot do not load any thing to the box then ftp the mtd5.img to tmp telnet to the box and
cd /tmp && eraseall /dev/mtd/5 && cp mtd5.img /dev/mtd/5 && reboot

this should work in all images

Regards

[Devilfish]

Thanks for the information viper76. Hopefully will help others with problems.

[baderh]

i will try it today... will let you know

note: used to try it and black screen

[baderh]

It didnt work black screen again

[ajeeb]

not tested yet but thanks @VIPER76
as soon as possible !will test

thanks Devilfish for the gr8 topic