Dual-boot your favourite custom ROM with stock firmware - XPERIA X10 Android Development

To encourage developers and users to switch to the new xRecovery, I prepared a package that allows dual-booting between custom ROM and stock firmware. This is just a proof of concept, I am not going to develop it further nor support it as usual project release. Instead, I hope that developers will find many useful things inside to use in their own pojects
It also may be useful for people using 2.3 ROMs without camera/camcorder.
Tested with: FreeX10 beta4, Woflbreak's CM, AOSP 2.3
PLEASE READ CAREFULLY:
- it works from NAND rather than SD Card - should not suffer fom performance issues
- it will work with any custom 2.2/2.3 ROM of reasonable size
- it WON'T work with custom 2.1 ROMs - not enough storage space
- it uses 200MB of your /system and 256MB of your /data partition - make sure you've got enough free space
- it requires xRecovery 1.0.0 (the old one doesn't allow custom boot)
- it cannot be accessed via recovery, but it's possible to mod it to do so (devs/adv.users)
- it works with baseband 49/52!
- if you back up your system with nandroid backup, the 2.1 ROM will be included in this backup
Click to expand...
Click to collapse
Install:
Flash the dualboot 2.0.A.0.504.zip via xRecovery 1.0.0.
Uninstall:
Remove the following folders using Root Explorer:
Code:
/data/dualboot
/system/dualboot
Boot into stock 2.1 firmware:
Boot into xRecovery, select "Boot custom ROM/kernel"
Download:
dualboot 2.0.A.0.504.zip
Cheers,
z

---

You genius you've done another amazing things for our phone thank you
Sent from my SEX10 using XDA App

---

Nice work mate!

---

What kind of genies do we have hear :O?!

---

I told everyone so, updating recovery has an advantage.

---

U really rock man

---

zdzihu said:
To encourage developers and users to switch to the new xRecovery, I prepared a package that allows dual-booting between custom ROM and stock firmware. This is just a proof of concept, I am not going to develop it further nor support it as usual project release. Instead, I hope that developers will find many useful things inside to use in their own pojects
It also may be useful for people using 2.3 ROMs without camera/camcorder.
Tested with: FreeX10 beta4, Woflbreak's CM, AOSP 2.3
Install:
Flash the dualboot 2.0.A.0.504.zip via xRecovery 1.0.0.
Uninstall:
Remove the following folders using Root Explorer:
Code:
/data/dualboot
/system/dualboot
Boot into stock 2.1 firmware:
Boot into xRecovery, select "Boot custom ROM/kernel"
Download:
dualboot 2.0.A.0.504.zip
Cheers,
z
Click to expand...
Click to collapse
Thanks for the work buddy..... I don't have access to mediafire from workplace will check once i reach home....
As you said its for developer's so i assume all source code's are included in it.

---

How to revert back to the first rom?

---

Thanks Z..u r the best

---

astrall said:
How to revert back to the first rom?
Click to expand...
Click to collapse
Remove this:
/data/dualboot
/system/dualboot

---

FINALLY
something awesome to play with!!!
downloading now...
will test it out this weeked for dual booting using FreeX10/CM7
also i think we can integrate custom kernel booting into this... for those roms which require it...
finished d/ling:
@anantshri:
Code:
#!/sbin/sh
# zdzihu: let's get some Ubuntu fun!
insmod /system/kernel/splboot.ko
sync
cat /system/kernel/miniloader > /proc/splboot/image
cat /system/kernel/boot-stock.img > /proc/splboot/boot_img
sleep 3
echo > /proc/splboot/boot
interesting eh???
guess i will heave to search for that splitbootimg binary/app again...

---

Genius @work
Thank you Z without you there would be no fun using the X10...

---

DooMLoRD said:
Code:
#!/sbin/sh
# zdzihu: [b]let's get some [size=4]Ubuntu[/size] fun[/b]!
insmod /system/kernel/splboot.ko
sync
cat /system/kernel/miniloader > /proc/splboot/image
cat /system/kernel/boot-stock.img > /proc/splboot/boot_img
sleep 3
echo > /proc/splboot/boot
Click to expand...
Click to collapse
Lawl, I forgot to rename my script Damn Ubuntu never booted fine anyway...
Cheers,
z

---

oh i see...
so basically we are flashing 2.1 ROM on top of custom rom....
so the 2.1 rom is actually in the .ext2 files!!!

---

zdzihu said:
Lawl, I forgot to rename my script Damn Ubuntu never booted fine anyway...
Cheers,
z
Click to expand...
Click to collapse
so for multibooting we can actually jsut store the img files on sdcard check flags set by users... copy those img files to /data & /system and then jsut continue booting with the modded kernel u posted...
hu i think that should work...

---

DooMLoRD said:
so for multibooting we can actually jsut store the img files on sdcard check flags set by users... copy those img files to /data & /system and then jsut continue booting
Click to expand...
Click to collapse
It does work. But it's not pretty. I played with both /system and /data being stored on SD Card, but the system suffered from terrible freezes/"x stopped responding" (like FreeX10 alpha). Also, first boot took around 7-8min.
DooMLoRD said:
with the modded kernel u posted...
Click to expand...
Click to collapse
With any kernel really. It's ramdisk that's important (mounting images).
Cheers,
z

---

V/Nice!
Q: Is this using CM7_Passion sources? cm_passion_full-xx - would be nice to compile and maybe add some extra's in.. possible?

---

{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}

---

zdzihu said:
It does work. But it's not pretty. I played with both /system and /data being stored on SD Card, but the system suffered from terrible freezes/"x stopped responding" (like FreeX10 alpha). Also, first boot took around 7-8min.
With any kernel really. It's ramdisk that's important (mounting images).
Cheers,
z
Click to expand...
Click to collapse
ya i got that... i actually ment the ramdisk which doesnt remount NAND MTDs

---

Great works !!
Please teach me how to make system.ext2 & data.ext2 files ??