[Q] Dual boot - Possible? - Sony Xperia P, U, Sola, Go

This is more a curiosity question than a request ( but if anyone is willing to do that someday...). I read that some devices are able to do a dual boot. I wonder if it's possible with our Xperia S...
Sent from my LT26i with Tapatalk 2

---

yes it is,
it is not that hard with some kernel editing (we did it with our play, keiranftw and I)

---

Nice to hear that. Hope you can do it for XS sometime Would love to dual boot Sony ICS/JB and CM10/AOKP
Sent from my LT26i with Tapatalk 2

---

I would like to do it, but without the device it is quite hard

---

nickholtus said:
I would like to do it, but without the device it is quite hard
Click to expand...
Click to collapse
Oh. I see. Well, maybe another dev willing to do that
Sent from my LT26i with Tapatalk 2

---

It's possible, I'll be looking into remapping the partitions on the XS with some LVM magic. Basically you'll need to flash a special kernel and then you'll have two /system partitions and two /data partitions for dual booting without using the sdcard.

---

nickholtus said:
I would like to do it, but without the device it is quite hard
Click to expand...
Click to collapse
Can you do it for Xperia P?
Sent from my Xperia P using my fingers.

---

K900 said:
It's possible, I'll be looking into remapping the partitions on the XS with some LVM magic. Basically you'll need to flash a special kernel and then you'll have two /system partitions and two /data partitions for dual booting without using the sdcard.
Click to expand...
Click to collapse
Hope you'll do it after a stable cm10 released!
Sent from my LT26i using xda premium!
Don't forget to thank me if i help!

---

K900 said:
It's possible, I'll be looking into remapping the partitions on the XS with some LVM magic. Basically you'll need to flash a special kernel and then you'll have two /system partitions and two /data partitions for dual booting without using the sdcard.
Click to expand...
Click to collapse
The way I and nick did it was more hacky
in init.semc.rc we did:
exec /sbin/dualboot
And what that basically did was check if /cache/recovery/dualboot existed then if it did:
unmount system and data
mount them to /mnt/system and /mnt/data
mount mmcblk0p2 (sd-ext 1) to /system
mount mmcblk0p3 (sd-ext 2) to /data
It was hacky, but it worked.
On S you could even boot different kernels

---

KeiranFTW said:
The way I and nick did it was more hacky
in init.semc.rc we did:
exec /sbin/dualboot
And what that basically did was check if /cache/recovery/dualboot existed then if it did:
unmount system and data
mount them to /mnt/system and /mnt/data
mount mmcblk0p2 (sd-ext 1) to /system
mount mmcblk0p3 (sd-ext 2) to /data
It was hacky, but it worked.
On S you could even boot different kernels
Click to expand...
Click to collapse
If he do not see this in a few days, please PM him. Keiran, you are awesome!! Boot different kernels, man, that is awesome!!

---

We did it for Xperia Play, but K900 has more knowledge kernel wise than us and could probably get it working a better way.

---

KeiranFTW said:
We did it for Xperia Play, but K900 has more knowledge kernel wise than us and could probably get it working a better way.
Click to expand...
Click to collapse
I know that, what I want is to use LVM to split the phone's /system and /data in halves because we don't always have an sd-ext. Also stuff like 500mb system, 5mb cache, rest data and a FUSE sdcard (gnex style) should be possible on AOSP.

---

K900 said:
I know that, what I want is to use LVM to split the phone's /system and /data in halves because we don't always have an sd-ext. Also stuff like 500mb system, 5mb cache, rest data and a FUSE sdcard (gnex style) should be possible on AOSP.
Click to expand...
Click to collapse
How abt we managed to split a proportion of internal storage? As XS has abt 26GB capacity! So we could create a new system and data partition with the same size with original system and data partition!
Sent from my LT26i using xda premium

---

monivan said:
How abt we managed to split a proportion of internal storage? As XS has abt 26GB capacity! So we could create a new system and data partition with the same size with original system and data partition!
Sent from my LT26i using xda premium
Click to expand...
Click to collapse
Yes, we can do that as well. But 1GB system is just excessive.

---

K900 said:
Yes, we can do that as well. But 1GB system is just excessive.
Click to expand...
Click to collapse
Ok let's just split system partition into halve but creat new partition for data! Because, i think 2GB data each would be better for storing apps! I don't like moving apps to internal storage! Sometime the apps error after boot!
Sent from my LT26i using xda premium

---

monivan said:
Ok let's just split system partition into halve but creat new partition for data! Because, i think 2GB data each would be better for storing apps! I don't like moving apps to internal storage! Sometime the apps error after boot!
Sent from my LT26i using xda premium
Click to expand...
Click to collapse
You'll be able to create any partition configuration you like.

---

Yeah rite! It's optional anw! At least it's possible to dualboot!
Sent from my LT26i using xda premium

---

Any progress.. Please consider Xperia p also..

---

Guys do something like this for xperia U too.... Please..
Sent from my Xperia U using xda app-developers app

---

+1 same request !
niku4uster said:
Guys do something like this for xperia U too.... Please..
Sent from my Xperia U using xda app-developers app
Click to expand...
Click to collapse
yeah +1 same request want to have GB + ICS both working