DUAL BOOT for SGY

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this is still alpha release and not fully tested. the idea based on http://forum.xda-developers.com/show....php?t=1155613 but this is diffrent implementation. i successfully boot using stock rom dxlc1 on internal storage and hybrid 2.1 on sdcard.

instalation :
1. flash kenel using odin (or other method for kernel flashing)
2. make 4 partition in your sdcard
1st fat-32 for your data
2nd ext3 for system
3rd ext3 for cache
4th ext3 for data
for testing, i use about 300MB for all ext3 partition
3. edit updater-script

- change /dev/block/stl9 to /dev/block/mmcblk0p2 and the type from rfs to ext3
- change /dev/block/stl10 to /dev/block/mmcblk0p3 and the type from rfs to ext3
- change /dev/block/stl11 to /dev/block/mmcblk0p4 and the type from rfs to ext3
- don't use a2sd
- don't flash boot.img

change for hybrid 2.1 rom:

change line

mount("rfs", "EMMC", "/dev/block/stl19", "/system");

with

unmount("/system");
mount("ext3", "EMMC", "/dev/block/mmcblk0p2", "/system");

remove line

package_extract_dir("data", "/data");

remove all line with word "dtinstall"

remove this line

assert(package_extract_file("boot.img", "/tmp/boot.img"),
       write_raw_image("/tmp/boot.img", "boot"),
       delete("/tmp/boot.img"));

4. install your edited rom as usual (i use cwm)

5. done. if you want boot to sdcard, create empty file named "bootsdcard" in your sdcard 1st partition and reboot

note :
- you can boot using dual rom but not dual kernel (yet). this one is stock kernel, so no init.d (yet)
- it does NOT work with a2sd or link2sd
- like i said it's not fully tested yet. it's only for dev and tester. use with caution
- boot from sdcard is slower compared to internal storage. little bit laggy i think, but still very usable
- if you already tested,please report your result

link:
http://www.mediafire.com/?6zrkh6a872036x7

woah... another great innovation in our device...

This is awesome

will try and report...

Originally Posted by sunilvyas

will try and report...

if you try before install rom to sdcard please check if your sdcard partition is corect (/dev/block/mmcblk0p1 , /dev/block/mmcblk0p2 , /dev/block/mmcblk0p3, /dev/block/mmcblk0p4)
and the filesystem also correct. better using tools in linux. editing updater-script also little bit tricky. i use hybrid because i don't have other custom rom. i also try direct extract from stock rom image but not working (boot loop).

sounds interesting...count me in irfan. repartition my old sdcard atm.

Will try

Sent from my GT-S5360 using xda premium

I can't convert the script. dsixda kitchen always add new lines if I convert the script from amend to edify. I can't get rid some lines...how can i do that in better way?

edit: these lines (and some more) always added automatically.
assert(package_extract_file("boot.img", "/tmp/boot.img"),
write_raw_image("/tmp/boot.img", "boot"),
delete("/tmp/boot.img"));

Originally Posted by kurotsugi

I can't convert the script. dsixda kitchen always add new lines if I convert the script from amend to edify. I can't get rid some lines...how can i do that in better way?

edit: these lines (and some more) always added automatically.
assert(package_extract_file("boot.img", "/tmp/boot.img"),
write_raw_image("/tmp/boot.img", "boot"),
delete("/tmp/boot.img"));

i don't know if it is proper way, but i just unzip,edit,and re-zip. i use cwm, not sure if working with stock recovery.
just remove that line. it's for update boot.img
[edit]--
and i know it's tricky to install rom to sdcard. i just need few hour to mod kernel (ramdisk) but almost a day just to find working way to install rom to sdcard

thats a nice discovery. at first I thougt both updater-script and updater-binary are strictly related that we can't recklessly modify only updater-script. modifying it right now...

---------- Post added at 03:49 PM ---------- Previous post was at 02:52 PM ----------

it works...now I can set my internal and system partition to any size (lol) having 300mb internal memory sounds nice for everyone.

edit: make sure you're using a fast sdcard.