[Q] What's up with dual booting Ubuntu/Android? - Folio 100 General

ph84 said that dual boot is possible and he will write how to.
When???(don't hurry, I only ask)

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Maybe your question can be answered if you look for the Topogigi's post in this thread [HOW TO] Linux on Folio.
I've not try this, because i don't understand some things... if someone makes a how to step by step, would be amazing !!
Here is how to get it without steps:
Topogigi said:
[ONLY FOR DEVELOPERS AND SKILLED PEOPLE: NOT FOR NEWBIES!!!]
My 2 cents:
I installed ubuntu and it works quite well. I'd like to point out that it you can boot android or ubuntu flashing the boot.img containing the linux kernel in place of recovery kernel (fastboot flash recovery boot.img). You can even try a kernel before flashing it to the device (fastboot boot boot.img). To enter fastboot mode in your device, simply press the power button three times when the Toshiba logo appears on the screen at powerup, then press volume up one time. Voila, you are in fastboot mode...
To boot linux, you have to press "power+volume up", then follow the instruction on screen to wipe the device (don't worry, it will boot linux and it will not wipe anything). You'll miss the recovery partition that way, but you'll gain a dual-boot tablet with android and ubuntu in change. Not a bad trade.
If you really need recovery, you can always reflash it with fastboot, so the process is perfectly reversible.
Now, back to business:
1) Touchscreen works (sort of). If you apt-get evtest, you'll notice that /dev/input/event3 is bound to the touchscreen and it reports to be alive and kicking. The test reports the coordinate changing and the pressure on the screen (multitouch works too). But......in Xorg, the device only reports the pressure and coordinates are not changing. You can test with xinput as I did. It seems a software-related issue: the drivers does not report correctly what the hardware is telling him. I'll investigate and report back if news will come out.
2) Wifi could eventually work. The card is bound via SDIO bus, and a ar6000 driver supporting SDIO is available. I'll try to compile the driver ASAP.
3) Suspend, cpufreq do not work and I doubt they will work without driver sources
4) Battery is working, framebuffer is working good and the system seems quite snappy also with an EXT4 partition on a MMC. Openoffice works great, quicker than expected.
5) If you compile the kernel with nilfs2 support, you can easily mount all the android partitions within ubuntu with ease. Not bad...
That's all for the moment: I hope that someone will help me to make this little devil fly.
Click to expand...
Click to collapse

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sergi711 said:
Maybe your question can be answered if you look for the Topogigi's post in this thread [HOW TO] Linux on Folio.
I've not try this, because i don't understand some things... if someone makes a how to step by step, would be amazing !!
Here is how to get it without steps:
Click to expand...
Click to collapse
That's quite easy in fact :
In fastboot, just flash the boot.img instead of recovery :
fastboot flash recovery boot.img
That's it... you will loose "auto" recovery, but you will gain Linux Ubuntu
Akta

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Akta77 said:
That's quite easy in fact :
In fastboot, just flash the boot.img instead of recovery :
fastboot flash recovery boot.img
That's it... you will loose "auto" recovery, but you will gain Linux Ubuntu
Akta
Click to expand...
Click to collapse
It sounds easy... but i have never enter in fastboot mode... I don't know what commands use...
Another question, I have flashed the update.zip from ph84 to boot only ubuntu, when i flash this boot.img on fastboot mode how I flash the foliomod ???

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fastboot, SDK, UPDATE.ZIP, DRIVERS etc.
Sergi711
1.I know for that(try), but I can't use fastboot. I installed all drivers, but I can't send commands to Folio 100. I made thread for help, but no one help me. If you can help, please, help me!!!!!!
Can we make update.zip with that kernel and don't use fastboot?
2.a)First, download and install SDK.
http://developer.android.com/sdk/index.html
Second, go here http://www.addictivetips.com/mobile/enable-adb-usb-drivers-for-nvidia-tegra-based-android-tablets and install drivers.
Third, enter fastboot mode(3X Power UP+Volume UP) IF YOU PRESS POWER UP 4X, YOU'LL BRICK TABLET AND FOR THAT YOU CAN'T FIND HELP!!!!!
Moreover, connect Folio with PC,Laptop, NetBook, Tablet PC or NoteBook via USB and open terminal(Start>Run>cmd) and go to C:/android-sdk/platform-tools (in my
case)
Terminal: cd C:/android-sdk/platform-tools
Fifth, now run fastboot.exe and type anything you want
Terminal: fastboot _______________( fastboot flash recovery boot.img)
b) If you flash boot.img from ph84 to boot Ubuntu ARM on Folio 100, in future, you'll can only boot from SD Card or USB(sdmmc-update.zip or usb-update.zip). You'll not use Folio's internal storage and you'll can't boot to FolioMod, but from recovery you can easily reflash FolioMod or another rom or custom kernel(you need to reflash kernel and you can made your own update.zip with your custom kernel and don't touch FolioMod )
Akta77
Can we we copy recovery to /date or /date/date folder and boot it like MCLP said for installing FolioMod or another rom?
Step 1. Install Root Explorer on Folio 100(can't post app, because rules, but with googling find it easily or download it from android market)
Step 2. Copy the recovery image from FolioMod(if you want original recovery) or from CyanogenMod7.0.0(if you want unofficial ClockworkMod recovery) to SD Card or Internal storage
Step 3.With Root Explorer copy recovery.img to /date or if you find another date directory inside copy there(copy recovery.img to both directory just in case)
Step 4. Exit from Root Explorer, got to Settings>Applications>Development and enable USB Debugging
Step 5. Connect Folio 100 to PC or etc. via USB and open Terminal(cmd) and go to SDK directory C:/android-sdk/platform-tools(in my case)
Terminal: cd C:/android-sdk/platform-tools
adb shell (use this if you have installed SDK drivers for Tegra devices)
cat /data/recovery.img >/dev/block/mmcblk0p7
or
Install any Terminal app on Folio 100 and type
Android Terminal: cat /data/recovery.img >/dev/block/mmcblk0p7
After this, you should have recovery

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Jon2555 said:
Sergi711
1.I know for that(try), but I can't use fastboot. I installed all drivers, but I can't send commands to Folio 100. I made thread for help, but no one help me. If you can help, please, help me!!!!!!
Click to expand...
Click to collapse
Maybe this helps: http://forum.xda-developers.com/showthread.php?t=1055754
Most other fastboot binaries out there don't recognize tegra devices.

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I just use the SDK's Fastboot under Linux (built from Cyanogen's 7 repo) without any problem.
If you are using Windows, have you modified the inf has stated by google?
Entering fastboot is simple : just press x3 power and then volume up at boot screen.
You will be in fastboot mode.
I am not sure we can boot the kernel from somewhere else than boot partition or recovery partition. But we could maybe build a relocable kernel and load Linux or Android using kexec from boot partition like "petiboot" on PS3
Akta

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Thank's guys!!! I'm going to try it whan I back from France.
Sent from my folio 100 using Tapatalk

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could someone that have a dual boot ubutntu/android make a how to for us... ??? because i read the lastest post that you reply i don't know how to have a dual boot yet.. i can't understand... please a how to is needed, step by step...
thanks in advance !!!

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Hi,
Just wrote you how to do it
Boot the tab in fastboot (3xPower + 1 Vol Up)
Then connect your tablet on your PC and do :
fastboot flash recovery boot.img (boot.img is extracted from update.zip according to your wish (SDCARD or USB PENDRIVE)).
Akta

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ok i flash the boot.img on fastboot, and then ??? i only have now ubuntu, how i install android after fastboot flash boot boot.img ????
I know, i must enter fastboot mode, and flash boot.img instead of recovery.
After that, i will only be able to boot from sdcard... isn't it ?
Ok, i must have 2 sdcards to boot android, and the other sdcard to boot ubuntu ???
if this is right... how the sdcard must be ??? update.zip on the root ???, the update zip extracted on the root of sdcard ??
i have lot of doubts after the fastboot flash recovery boot.img step, sorry.... can anyone help me ??

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I think when you flash boot.img(sd or usb) for dualboot, when sd card with Ubuntu is in Folio you'll boot ubuntu(sd or usb) and if you haven't got Ubuntu sdcard or you have it (but not Ubuntu sd) or if you haven't any you will boot to android.
What's up with my question?
Sent from my folio 100 using Tapatalk

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Ok i understand that after flash boot.img instead of recovery on fastboot mode... folio will boot from sdcard, in that case, if you push a sdcard with an ubuntu filesystem, folio will boot ubuntu, and if you remove sd after boot moment, folio will recognise internal sd and boot android ??? thats it ???
edit: but what boot.img must i flash ???

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When i will have some time, i will rebuild a boot.img able too boot linux from a second partition on the sdcard. You will have fat32 on first partition and ext3 or ext4 on second. For now, you can live your sdcard in the folio but android is not able to access it (lack of ext3 / ext4 support, but easy to install ).
Akta

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Thank's Akta for your help!!! Can you sometime post your progress? I want to help, but I don't have dev skills. Can you post some good link(searched, but no luck) or your howto about making kernels? I found for themes and I'll try to make some in my free time.
Sent from my folio 100 using Tapatalk

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Quite interested by the dual boot on Folio 100.
I will keep an eye on this thread.

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Akta77 said:
That's quite easy in fact :
In fastboot, just flash the boot.img instead of recovery :
fastboot flash recovery boot.img
That's it... you will loose "auto" recovery, but you will gain Linux Ubuntu
Akta
Click to expand...
Click to collapse
I there, I have few questions:
First, why are you flashing boot into recovery? Is not supposed that boot is the image that cares about booting procedure?
Second, once first question is solved, which boot image are we supposed to flash? I mean, we will need one that searches into sd for a boot/grub, isnt it?
Third, what about the procedure, I explain myself, the logical order of doing all this is: flash an android rom, CM for example, then do the procedure to install ubuntu into the sd and finally flash the boot img so system looks for sd-ubuntu and if it's not found, then boot internal android rom, am i right?
Thanks!

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1. Yes.
2. Yes.
3. Yes.
Sent from my GT-I5700 using Tapatalk

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Well, then:
Which image should we flash? Where can I can get it?
And finally, this image where must be flashed to dualboot?
Thanks!

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Look in the second post on first page. You will see someone talking about dual boot. Find that post in first threde of Ubuntu for Folio 100 that wrote DerArtem(I think)
I don't have time to post link, but if you don't find it tell me and I'll post link.