[PREVIEW] Galaxy S3 - MultiBoot project in progress

Phil_Suz · Dec 20, 2013

For technical questions,
Please use this thread now in dev subforum :
http://xdaforums.com/showthread.php?t=2684052
(new versions are published there)

[Updated 2014/03/10]
version 1.2

migration to twrp2.7.0.0
sizing of system/data/cache now possible
real internal/external sd mounted ( respectively in /storage/intsdcard and /storage/extsdcard )
new way to boot roms

[Updated 2014/02/07]

version 1.1 to fix kernel injection bug ( Slimkat not starting ) - kload_hardboot

[Updated 2014/02/05]

- new version d2att-twrp-v2.6.3-mb-v1.0 :

- Xposed fixed
- new feature to reboot from android

- new app multiboot.apk ( need d2att-twrp-v2.6.3-mb-v1.0 )

- add credits/reference at the end of message

- add zip version ( to be able to install without odin - only for d2att )

Hi all,

I managed to make working multiboot feature on Galaxy S3.

Below are some videos preview that I did demonstrating the features ( don't look at sound, I removed it because my english is not fluent).

This project is at an early stage but already working with limitations.

If you want to try it, beware that it is dangerous (no risk to brick but if you make mistake you risk to install a zip into your internal rom), so to test it, please follow exactly the operations in videos examples.

Very important recommendations to test :

- BACKUP all your data first !
- Use only your internal if you have at least 4G available ( 7GB recommended because I create sparsed img files but if you fill all the rom, it will take 7GB )
- Use your external sd card only if :

- you have at least 7 GB free
- your filesystem is vfat or ext4 ( exfat,ntfs not supported for the moment )

- Very very important : when you use "set rom" option, you have to see "command succeded" at the end of the output. If not, don't go further and reboot.
- start by playing with recovery roms ( check video ) before testing full rom
- creating rom on vfat can take about 15 minutes (to create img files). Be patient...

The method used is an adapted kexec-hardboot method created by mkasic (http://xdaforums.com/showthread.php?t=1266827), but with a complete replacement of kexec by another userspace program ( kload-harboot ) and a very small kernel patch ( hardboot-reserve ).
Note also that this adapted method is easily portable to any android devices.

If you are interested in this project ( to help for testing, to help dev, to add features etc..), I will open a thread in the developpement subforum, to published sources and explanations.

Booting multiples ROMs demo:

Playing with recovery roms:

Creating a new rom, installing gapps ( if not done at first stage ) :

New Multiboot android app

Attachements :

Odin : use d2att-twrp-v2.6.3-mb-v1.1.tar
TWRP/CWM : d2att-twrp-v2.6.3-mb-v1.1.zip
Android app : Multiboot.apk ( need to allow unknown sources )
d2att-twrp2.7-mb-v1.2 : http://www.androidfilehost.com/?fid=23329332407577797

References / Credits :
mkasic : kexec-hardboot creator - http://xdaforums.com/showthread.php?t=1266827
Tassadar : MultiROM creator - best project - http://xdaforums.com/showthread.php?t=2011403 - bbootimg used
TWRP Team : http://www.teamw.in/project/twrp2

Philippe,

Smash2Bash · Dec 22, 2013

Is this for the i747? Because it can cause I brick. Not trying to bust your...yeah. But I wanna try it and don't wanna send it back to AT&T with a lie

Edit: Got it installed. Gotta use odin guys. All good. testing multiboot soon.

EditEdit lol: tested and good.
Sent from my SAMSUNG-SGH-I747 using Tapatalk

Phil_Suz · Dec 23, 2013

Smash2Bash said:
Is this for the i747? Because it can cause I brick. Not trying to bust your...yeah. But I wanna try it and don't wanna send it back to AT&T with a lie

Edit: Got it installed. Gotta use odin guys. All good. testing multiboot soon.

EditEdit lol: tested and good.
Sent from my SAMSUNG-SGH-I747 using Tapatalk

Hi Smash2Bash,

Sorry to answer lately. I did this program on i747M ( Bell canada provider ) with d2att cm10.2 kernel but as we share the same kernel, it should be fine. Just take care of warnings that I putted in first message. If you can share your experience and tell me if you found problems/bugs.
When I reach 10 posts, I will probalby open a dev thread.

Phil_Suz,

Smash2Bash · Dec 23, 2013

Phil_Suz said:
Hi Smash2Bash,

Sorry to answer lately. I did this program on i747M ( Bell canada provider ) with d2att cm10.2 kernel but as we share the same kernel, it should be fine. Just take care of warnings that I putted in first message. If you can share your experience and tell me if you found problems/bugs.
When I reach 10 posts, I will probalby open a dev thread.

Phil_Suz,

No problem man. It's working good. I tested cm11 paranoid android and it worked good. But I tested avatar ROM 4.3 and it didn't work so well. Probably a ROM issue. And these were tested with my internal ROM as 4.3 touchwiz. You should put in the OP to flash with Odin. And I found a bug I think....

When you make a new ROM and flash the ROM in the new slot, you must swap back to internal in order for it to boot. So you can't swap to it, and then boot it.

Sent from my SAMSUNG-SGH-I747 using Tapatalk

Mikessv · Dec 23, 2013

Is there anyway to make a regular zip for this? I don't have access to a computer for Odin

Sent from my SAMSUNG-SGH-I747 using Tapatalk 2

fire_angel · Dec 23, 2013

it's a great tool for the people than change ROM all the time or the testers...well....it's my opinion....XD:laugh:

Smash2Bash · Dec 23, 2013

fire_angel said:
it's a great tool for the people than change ROM all the time or the testers...well....it's my opinion....XD:laugh:

Exactly! That's about be my exact purpose with this

Sent from my SAMSUNG-SGH-I747 using Tapatalk

Phil_Suz · Dec 24, 2013

Smash2Bash said:
No problem man. It's working good. I tested cm11 paranoid android and it worked good. But I tested avatar ROM 4.3 and it didn't work so well. Probably a ROM issue. And these were tested with my internal ROM as 4.3 touchwiz. You should put in the OP to flash with Odin. And I found a bug I think....

When you make a new ROM and flash the ROM in the new slot, you must swap back to internal in order for it to boot. So you can't swap to it, and then boot it.

Sent from my SAMSUNG-SGH-I747 using Tapatalk

Thank's for feedback.
I will add the information that this preview has to be installed with Odin.
In fact, it is prerequisite to go back to original rom to be able to boot a Rom that you installed on internal sdcard ( /data/media/../) .
When you select a rom, it is to make operation on it ( install, wipe etc.. ) but not to boot on it. I admit that it is not very clear...

Mikessv said:
Is there anyway to make a regular zip for this? I don't have access to a computer for Odin

Sent from my SAMSUNG-SGH-I747 using Tapatalk 2

Yes, I will do it soon.

fire_angel said:
it's a great tool for the people than change ROM all the time or the testers...well....it's my opinion....XD:laugh:

In my case, it was also to have my original rom (not rooted) for my work during work time, and use other roms outside work.

balrog558 · Jan 15, 2014

This looks awesome I will try it out asap. Thanks for the hard work

Sent from my SAMSUNG-SGH-I747 using Tapatalk

ChinDaChin · Jan 15, 2014

Wow! This looks awesome! I'll have to try it when I grow a pair of balls haha. I'm too scared to mess with my phone any further. (Especially since I did the 4.3 OTA.)

jukiewalsh · Jan 27, 2014

Works like a charm

Sent from my SAMSUNG-SGH-I747 using Tapatalk

matrixzone · Jan 30, 2014

Thanks will try

jukiewalsh · Jan 30, 2014

It even flashes KitKat Roms without the status 7 even though it's based on twrp 2.6.3.0

Sent from my SAMSUNG-SGH-I747 using Tapatalk

Okaham · Jan 31, 2014

hey, i was wondering how one flashes this? i know it's through Odin, but do i flash through PDA? and what do i have to have checked? thanks.

Smash2Bash · Jan 31, 2014

jukiewalsh said:
It even flashes KitKat Roms without the status 7 even though it's based on twrp 2.6.3.0

Sent from my SAMSUNG-SGH-I747 using Tapatalk

That amazed me too. That was odd.

Sent from my I747 using 4G LTE! ROM stands for "Remedy of Mediocrity" (says my girlfriend)

---------- Post added at 03:20 AM ---------- Previous post was at 03:17 AM ----------

Okaham said:
hey, i was wondering how one flashes this? i know it's through Odin, but do i flash through PDA? and what do i have to have checked? thanks.

Using PDA. Correct. Flashed it again yesterday can verify.

Sent from my I747 using 4G LTE! ROM stands for "Remedy of Mediocrity" (says my girlfriend)

Okaham · Jan 31, 2014

Smash2Bash said:
That amazed me too. That was odd.

Sent from my I747 using 4G LTE! ROM stands for "Remedy of Mediocrity" (says my girlfriend)

---------- Post added at 03:20 AM ---------- Previous post was at 03:17 AM ----------

Using PDA. Correct. Flashed it again yesterday can verify.

Sent from my I747 using 4G LTE! ROM stands for "Remedy of Mediocrity" (says my girlfriend)

so what should i have checked? auto reboot, f. reset time...etc? thanks!

Smash2Bash · Jan 31, 2014

Okaham said:
so what should i have checked? auto reboot, f. reset time...etc? thanks!

Close the program and reopen it. Use default settings. Make sure re - partition isn't checked. It normally isn't. So open odin. Click the file in PDA. Hit start. Done.

Sent from my I747 using 4G LTE! ROM stands for "Remedy of Mediocrity" (says my girlfriend)

saranhai · Jan 31, 2014

Nicely done OP! Tested and I can confirm that this does indeed work on the T-Mobile Samsung Galaxy S III SGH-T999!
One small thing though, this mod makes the recovery think that the device is an i747, therefore, T-Mobile ROMs (with the getprop in updater-scripts) cannot be flashed with this. I expect though, that this is a minor issue and can be fixed very easily. Once again, great work! :good:

-Saranhai

berryman13 · Jan 31, 2014

What kind of bugs are people running into? I just saved my device's ass from a hard brick for the second time in just a few months so I don't want to flash anyting with odin right now, some stability would be nice for a ltitle bit

However, if people have not been having problems once you boot into either ROM, at least nothing additional to what is already a known issue, then I am flashing this sucker RIGHT away. Question, how is /system/ looking? what about build.prop and the init.d folder? are they seperate for each ROM, and if so, how are they managed when I am not booted into one for instance?

Smash2Bash · Jan 31, 2014

berryman13 said:
What kind of bugs are people running into? I just saved my device's ass from a hard brick for the second time in just a few months so I don't want to flash anyting with odin right now, some stability would be nice for a ltitle bit

However, if people have not been having problems once you boot into either ROM, at least nothing additional to what is already a known issue, then I am flashing this sucker RIGHT away. Question, how is /system/ looking? what about build.prop and the init.d folder? are they seperate for each ROM, and if so, how are they managed when I am not booted into one for instance?

Every rom is sorted into its own folder in these incoded files. You see?

Sent from my I747 using 4G LTE! ROM stands for "Remedy of Mediocrity" (says my girlfriend)

[PREVIEW] Galaxy S3 - MultiBoot project in progress

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