Little customization ROM for MK802IV

Forum to discuss the new Quad Core Rikomagic MK802 IV Mini PC

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Little customization ROM for MK802IV

Postby pescador » Tue Jul 07, 2015 8:22 pm

Hi everyone,
I'm trying to customize a little bit the 4.4.2 ROM for the MK802IV, just to get two things done, re-size the userdata partition to use the full space (8gb) and remove the emulated SD card.
I want to use a real SD card (32gb), and get the option to move the apps to the real SD card instead of the emulated one, I tried link2sd, but every reboot some apps show up, some others doesn't, so I decided to go deep and get involved with Android customization.

About the emulated SD, I messed up with the files inside the boot.img:
init.rk30board.rc (
fstab.rk30board.bootmode.emmc (
fstab.rk30board.bootmode.unknown (
(Github repo is not mine, I just found it searching for the content of my files, also you can see the rest of the files inside my boot.img on this repo)
I tried to get close to the conf here: "Physical primary only"
But after the changes, I tested the ROM in the stick, and going to "Settings>Storage" it still shows "NAND FLASH" mounted, but not showing information, and the "Settings" app closes when I go to "apps", so I assume that I did it wrong, and I'm not sure it the "Physical primary only" configuration is the one I'm looking for.
Also I don't understand the reason for bootmode.emmc and bootmode.unknown, but is the less important question.

About the parameter file (partitions), I've tested some changes but when I'm installing the firmware, is not passing the "checking" stage.
I tried 8GB minus the sizes of the partitions next to the "userdata" in the file, but the question is, the last partition is "user" and it have no space assigned, how much space this last one needs to work right? I think that the "user" partition without space may be the problem, but not sure anyway.

Any explanation/help would be thankfully received.

Posts: 2
Joined: Tue Jul 07, 2015 7:41 pm

Re: Little customization ROM for MK802IV

Postby Ruby » Fri Jul 10, 2015 3:56 am

:D Thanks for sharing.
Posts: 48
Joined: Tue Jun 02, 2015 9:18 am

Re: Little customization ROM for MK802IV

Postby pescador » Tue Jul 14, 2015 4:25 pm

If you read my post, you will see that I'm actually asking for help, not sharing a process.
Regards, Martin.
Posts: 2
Joined: Tue Jul 07, 2015 7:41 pm

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