Double OS in STREAK - Streak 5 Android Development

you can see the test video from here:
http://sdrv.ms/ZbWj9V
http://v.youku.com/v_show/id_XNDczNjkxMzc2.html
http://pan.baidu.com/share/link?shareid=99216&uk=3508921813
as you know , after android 2.3.7 (miui\cm7\ics...)
userdata(firstboot) is not use anymore
so we can install two os in STREAK at the same time
OS1
boot：mtdblock0（boot）
system：mtdblock6（system）
cache：innersd0p5（cache）
data：innersd0p6（data）
Click to expand...
Click to collapse
OS2
boot：mtdblock1（recovery）
system：mtdblock7（userdata）
cache：innersd0p7（new ext3 partition）
data：innersd0p8（new ext3 partition）
Click to expand...
Click to collapse
for userdata is only 140mb (system is 260mb)
you must choose a little os to install OS2
i have no idea how to creat a new "yaffs2" partition in innersd0
or maybe i will try to partition mtdblock
but it will be much more dangerous
I success finished in clockworkmod 5.0.2.7
（mke2fs 1.40.8 (13-Mar-2008) 、BusyBox v1.19.2-cm71 static (2011-10-06 22:09 +0200)）
if you are using streakmod 0.3.2.8 ，
it may show error report like
“E：Can't mount /dev/block/innersd0p5(Invalid argument)
E：Can't mount CACHE：recovery/log
E：Can't open CACHE：recovery/log
E：Can't mount /dev/block/innersd0p5”
try “mke2fs_static -F -j -b4096 -m0 /dev/block/innersd0p5” and so on
or try clockworkmod 6.0.1.2
First, add partitions reboot to recovery ,use adb to enter the follow commands
Code:
umount /cache
fdisk /dev/block/innersd0
p //see the default partitions，there may be 1、5、6、7
d //del partition 7
7 //del partition 7
d //del partition 6
6 //del partition 6
d //del partition 5
5 //del partition 5
n //add new partition
l //logic partition
//use default partition begining
+125M //the end of new partition 5，about 125mb
n //add new partition
l //logic partition
//use default partition begining
+850M //the end of new partition 6，about 850mb
n //add new partition
l //logic partition
//use default partition begining
+125M //the end of new partition 7，about 125mb
n //add new partition
l //logic partition
//use default partition begining
//use default partition end，about 850mb
w //start partitioning
q //exit fdisk
Second, formate partitions to ext3 also use adb to enter the follow commands
Code:
mke2fs -F -j -b4096 -m0 /dev/block/innersd0p5
mke2fs -F -j -b4096 -m0 /dev/block/innersd0p6
mke2fs -F -j -b4096 -m0 /dev/block/innersd0p7
mke2fs -F -j -b4096 -m0 /dev/block/innersd0p8
by the way ，if you have a big innersd0 and you want to add one fat32 partition
you can use the next command to mount it as a usbdisk ,and format it in PC
Code:
echo /dev/block/innersd0p9 > /sys/devices/platform/msm_hsusb/gadget/lun0/file
Third, install OS1 and OS2
OS1:
just as usual
Click to expand...
Click to collapse
OS2:you must modify two spaces:
1.init.rc in boot.img
open init.rc with notepad (or other)，find "userdata"
in the two lines before , change "[email protected]system" to "[email protected]userdata"
in this line , change "[email protected]userdata" to "[email protected]system"
in the next two lines , change "/dev/block/innersd0p6" to "/dev/block/innersd0p8" , change "/dev/block/innersd0p5" to "/dev/block/innersd0p7"
save "init.rc"，rebuild "boot.img"
2.updater-script
in the begining ,change "format("yaffs2", "MTD", "system");mount("yaffs2", "MTD", "system", "/system")"
to "format("yaffs2", "MTD", "userdata");mount("yaffs2", "MTD", "userdata", "/system")“
at the end ,change "write_raw_image("/tmp/boot.img", "boot")"
to "write_raw_image("/tmp/boot.img", "recovery")"
3.put "boot.img" and "updater-script" back to update.zip ,and flash it
Click to expand...
Click to collapse
because sometimes i need to format innersd0p7 and innersd0p8
because i don't want to back up userdata(firstboot) when i am backing up os1
so I make new recoverys for OS1 and OS2
i also make a tool pack to unpack and rebuild boot.img
and tool pack to flash boot or recovery (both in PC and in STREAK)
but they are chinese version
if anyone need them , i will post them later

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Thats some clever ****, your a genius.

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Dear Manics,
_n0p_ introduce me contact you due he thinks you can help me this issue. I'm using MIUI 2.4.20 (Android 2.3.7) but last time it face big problem so I want return to DSC of _n0p_ but failed, I have l flashed 407 then DSC 1.0 then 1.7update but it can not work, reboot frequently.
Could you please help me! Thanks in advance.

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great share!Thanks

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ak1978 said:
Dear Manics,
_n0p_ introduce me contact you due he thinks you can help me this issue. I'm using MIUI 2.4.20 (Android 2.3.7) but last time it face big problem so I want return to DSC of _n0p_ but failed, I have l flashed 407 then DSC 1.0 then 1.7update but it can not work, reboot frequently.
Could you please help me! Thanks in advance.
Click to expand...
Click to collapse
how did you flash 407/DSC ?
pkg? zip? or fastboot?
did you wipe data and cache ?
in android 2.3.3 or lower
it's better to do a factory restart after you flashed new os

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manics said:
how did you flash 407/DSC ?
pkg? zip? or fastboot?
did you wipe data and cache ?
in android 2.3.3 or lower
it's better to do a factory restart after you flashed new os
Click to expand...
Click to collapse
Thanks Manics,
1st I go to fastboot_mode flash recovery407.img then Select "2.update.pkg to flash zip file update.pkg.
2st go to fastboot_mode flash recoverysm.img then flash zip file DSC v.1.0 the flash update v.1.7
Full flashing then I do all wipe data & cache, davik cache...reboot then choose Factory Reset then...pending at DSC logo & reboot again & again.
Does it cause by MIUI is Android 2.3.7 but DSC A 2.3.3?

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@ manics
while you are at it, would you mind try to activate swap support? we could use some vram here

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ak1978 said:
Thanks Manics,
1st I go to fastboot_mode flash recovery407.img then Select "2.update.pkg to flash zip file update.pkg.
2st go to fastboot_mode flash recoverysm.img then flash zip file DSC v.1.0 the flash update v.1.7
Full flashing then I do all wipe data & cache, davik cache...reboot then choose Factory Reset then...pending at DSC logo & reboot again & again.
Does it cause by MIUI is Android 2.3.7 but DSC A 2.3.3?
Click to expand...
Click to collapse
when you wipe data and cache
was there any Error reporting？
try to flash DSC v.1.0 (zip) again and boot
if it works well
then reboot and update to 1.7

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deysmacro said:
@ manics
while you are at it, would you mind try to activate swap support? we could use some vram here
Click to expand...
Click to collapse
maybe you can use clockworkmod 6.0.1.2 to partition sdcard
add swap and\or app2sd partitions
then use “Swapper for root users” or other software to active swap

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nah... tried that already... all swap application would failed miserably with streak... since the kernel has no swap support by default...

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deysmacro said:
nah... tried that already... all swap application would failed miserably with streak... since the kernel has no swap support by default...
Click to expand...
Click to collapse
for swap support in kernel
i think you should ask n0p for help

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lol... i had this feeling you would say that... nah... it is not urgent or important... if someone else would want to ask bout it to n0p.. please do

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somebody told me that swap is not urgently required for our streak, our streak still good enough without swap
Sent from my Amazon Kindle Fire using Tapatalk 2

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for average user.. yes.. but for more advanced user.. 512mb ram is nothing...

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i tried another way these days
i installed system2 in innersd0
so os1 is nothing different as before
all from 2.2 to 4.0 works well
but i don't know how to make yaffs2 partitions
so os2 use ext3 system&firstboot
till now, 2.3.7 or higher works well in os2
but 2.3.3 or lower couldn't boot

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deysmacro said:
nah... tried that already... all swap application would failed miserably with streak... since the kernel has no swap support by default...
Click to expand...
Click to collapse
I'm not an expert but using the harddrive (or sd-card in this case) as virtual RAM in XP for instance is often said to have rather negative than positive effects in real world performance. Is there any difference on Android?
OT: Double OS works like a charm!