[MOD] MultiROM v29

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tilaksidduram

Senior Member
Jul 15, 2007
797
4,267
Bangalore
vh3puLb.png
Introduction
MultiROM is one-of-a-kind multi-boot mod for Samsung Galaxy Note II. It can boot any Android ROM as well as other systems like Ubuntu Touch, once they are ported to that device. Besides booting from device's internal memory, MultiROM can boot from USB drive connected to the device via OTG cable. The main part of MultiROM is a boot manager, which appears every time your device starts and lets you choose the ROM to boot. You can see how it looks on the left image below and in gallery. ROMs are installed and managed via modified TWRP recovery. You can use standard ZIP files to install secondary Android ROMs and MultiROM even has its own installer system, which can be used to support other Linux-based systems.

Features:
* Multiboot any number of Android ROMs
* Restore nandroid backup as secondary ROM
* Boot from USB drive attached via OTG cable
* Install ROM to external SD card [Newly Added feature]

You can also a video which shows it in action.

Warning!
It _is_ dangerous. This whole thing is basically one giant hack - none of these systems are made with multibooting in mind. It is no longer messing with data partition or boot sector, but it is possible that something goes wrong and you will have to flash factory images again. Make backups. Always.

Installation
1. Via MultiROM Manager - This at present does not have support for n7100, working on getting it enabled.
This is the easiest way to install everything MultiROM needs. Install the and select MultiROM and recovery on the Install/Update card. If the Status card says Kernel: doesn't have kexec-hardboot patch! in red letters, you have to install also patched kernel - either select one on the Install/Update card or get some 3rd-party kernel (the 3rd party kernel should also have kexec-hardboot patch) here on XDA. You are chosing kernel for your primary ROM, not any of your (future) secondary ROMs, so select the version accordingly.
Press "Install" on the Install/Update card to start the installation.​

2.Manual installation
Firstly, there are videos on . If you want, just search for "MultiROM installation" on and those, big thanks to all who made them. There is also an awesome article on Linux Journal.

Note 1: Your device must not be encrypted (hint: if you don't know what it is, then it is not encrypted).​

MultiROM has 3 parts you need to install:

  • MultiROM (multirom-YYYYMMDD-vXX-t03g.zip) - the ZIP file from second post and flash it in recovery.
  • Modified recovery (TWRP_multirom_t03g_YYYYMMDD.img) - the zip file from second post and flash it in recovery.
  • Patched kernel - You can use either one of the stock ones in second post or third-party kernels which include the patch, you can see list in the second post. Download the ZIP file and flash it in recovery.

You current ROM will not be erased by the installation.
Download links are in the second post.

Adding ROMs
1. Android
Go to recovery, select Advanced -> MultiROM -> Add ROM. Select the ROM's zip file and confirm. As for the space, clean installation of stock 4.4 after first boot (with dalvik cache generated and connected to google account) takes 676mb of space.
2. Ubuntu Touch
Use the MultiROM Manager app to install Ubuntu Touch.

Ubuntu Touch is in development - MultiROM will have to be updated to keep up with future changes in Ubuntu, so there's a good chance this method stops working after a while and I'll have to fix it.

3. Firefox OS
Firefox OS is just another Android ROM from MultiROM's point of view, so grab the ZIP file from Firefox OS' thread and add it as if it were Android

Using USB drive
During installation, recovery lets you select install location. Plug in the USB drive, wait a while and press "refresh" so that it shows partitions on the USB drive. You just select the location (extX, NTFS and FAT32 partitions are supported) and proceed with the installation.
If you wanna use other than default FAT32 partition, just format it in PC. If you don't know how/don't know where to find out how, you probably should not try installing MultiROM.
If you are installing to NTFS or FAT32 partition, recovery asks you to set image size for all the partitions - this cannot be easilly changed afterward, so choose carefully. FAT32 is limited to maximum of 4095MB per image - it is limitation of the filesystem, I can do nothing about that.
Installation to USB drives takes a bit longer, because the flash drive is (usually) slower and it needs to create the images, so installation of Ubuntu to 4Gb image on my pretty fast USB drive takes about 20 minutes.
Enumerating USB drive can take a while in MultiROM menu, so when you press the "USB" button in MultiROM, wait a while (max. 30-45s) until it searches the USB drive. It does it by itself, no need to press something, just wait.​


Updating/changing ROMs
1. Primary ROM (Internal)
  • Flash ROM's ZIP file as usual, do factory reset if needed (it won't erase secondary ROMs)
  • Go to Advanced -> MultiROM in recovery and do Inject curr. boot sector and then reboot.
2. Secondary Android ROMs
If you want to change the ROM, delete it and add new one. To update ROM, follow these steps:
  • Go to Advanced -> MultiROM -> List ROMs and select the ROM you want to update.
  • Select "Flash ZIP" and flash ROM's ZIP file.
  • To flash GAPPs for the Secondary ROMS, Go to Advanced -> MultiROM -> List ROMs and select the ROM you want to update.
  • Select "Flash ZIP" and flash GAPPS ZIP file.

Installing of Touchwiz as Primary Rom & AOSP ROM as Secondary.

  1. Boot into recovery and flash Modified TWRP Multirom recovery
  2. Next, Flash the Multirom zip.
  3. Next, Flash the Modified Agni Stock Kernel and then flash the Mali blobs zip too and finally reboot the phone
  4. Allow the phone to auto boot into the touchwiz rom. Once booted reboot the phone into recovery again.
  5. Now you can flash any AOSP rom as Secondary ROM. for that follow the below steps
  6. Select Multirom - > Add Rom -> ROM Type & Location to install the ROM -> AOSP ROM ZIP -> start the installation.
  7. After installation is complete, go back and select the AOSP ROM that you installed and select "Remove Boot.IMG".
  8. Reboot the Phone now and in the Multirom Manager Menu, select the secondary rom and allow it to Boot.

Note : Wifi is not working on the AOSP ROM installed as secondary, this needs to be debugged further. I am guessing it is due to the kernel version installed on the stock rom versus the touchwiz roms. Apart from the wifi, all other features are working fine.​


Source code
MultiROM - https://github.com/Tasssadar/multirom/tree/master (branch master)
Modified TWRP - https://github.com/Tasssadar/Team-Win-Recovery-Project (branch master)
Kernel w/ kexec-hardboot patch - https://github.com/tilaksidduram/android_kernel_samsung_smdk4412/commits/kitkat
MultiROM device tree - https://github.com/tilaksidduram/android_device_samsung_t03g

Thanks a lot to Tasssadar for creating this awesome utility.

XDA:DevDB Information
MultiROM, Tool/Utility for the Samsung Galaxy Note II

Contributors
tilaksidduram

Version Information
Status: Beta

Created 2014-10-10
Last Updated 2014-10-11
 
Last edited:

tilaksidduram

Senior Member
Jul 15, 2007
797
4,267
Bangalore
Downloads

1. Main downloads
MultiROM: Multirom Zip

Modified recovery for Multirom (based on TWRP) : Multirom Recovery zip

Kernel with kexec hardboot patch for AOSP ROMs only : Kernel Zip
Note : Other 3rd party AOSP Kernels like Agni, Plasma & Devil do not have the Kexec Hard-boot patch in them at present, so if you have flashed them on you primary ROM then you will not be able to boot into any of the secondary ROMS. I am working with the kernel owners to have the kexec hard-boot patch added into the kernel.

Kernels for Secondary ROMS : These Kernels are not Kexec Hardboot enabled, install them to fix the WIFI Issue on secondary ROM.
1. Omni ROM
2. SlimKat ROM
3. MIUI ROM
4. CM 11
5. Paranoid Android

Kernel with kexec hardboot patch for Touchwiz ROMs only : Agni Kernel for Stock Touchwiz ROMs

Kernel Developers, please merge this patch into your kernel - https://github.com/tilaksidduram/an...mmit/2c9d9821eaa7e250ffe89b67d0a6c8b1c8219bc4

You need to have kernel with kexec-hardboot patch only in primary ROM

2. Uninstaller

MultiROM uninstaller : Zip
Flash this ZIP file to remove MultiROM from your device. It will erase all secondary ROMs. If you don't want MultiROM menus in recovery, re-flash clean TWRP, but it is not needed - those menus don't do anything if MultiROM is not installed​
 
Last edited:

tilaksidduram

Senior Member
Jul 15, 2007
797
4,267
Bangalore
FAQ and other notes
About security
In order to make multi-booting possible, MultiROM has to sacrifice some security measures. Firstly, on secondary Android ROMs, /system is not mounted read-only. While there are other things preventing malicious software from messing with /system, this might potentialy make it easier for such software to attack that system.
Next, MultiROM doesn't work with /data encryption. Not many people who use custom ROMs also use encryption anyway, so that isn't much of a concern.

What do the ROMs share?
All ROMs are separate, except /sdcard, which is shared between all Android ROMs.

How many ROMs can I have?/Where are the ROMs stored?
You can have as many ROMs as you can fit in your /sdcard. All the ROMs are stored in /sdcard/multirom/roms or on an USB drive. This folder is unaccessible in Android, to prevent mediascanner from scanning it. You can either in recovery, or obtain root and go to /data/media/0/multirom/roms.

Can I have different versions of Android working alongside
Yes. As long as you select "Don't shere kernel" when installing the secondary ROM, the systems are separated.
MultiROM recovery says it's 2.6.3.0. Why isn't it updated to 2.6.3.*highernumber*?
It is, it just shows wrong version.

The menu with all the ROMs won't show up during boot, how to fix it?
Either re-flash the MultiROM zip or go to recovery, Advanced -> MultiROM -> Inject curr. boot sector.

The reason for this is that something rewrote your boot.img, which happens for example when you flash a kernel. MultiROM's boot menu is part of the boot image, so it has to be added into it again.​
 
Last edited:

FUSIONdev

Inactive Recognized Developer
Feb 23, 2011
886
561
OK Tilak! Thanks for your work! Let's wait a kernel with the patch, I want to try this solution :laugh::laugh::laugh:
 

tilaksidduram

Senior Member
Jul 15, 2007
797
4,267
Bangalore
OK Tilak! Thanks for your work! Let's wait a kernel with the patch, I want to try this solution :laugh::laugh::laugh:
I already patched the stock kernel and it available for download in my 2nd post. you can flash it against any AOSP based Kitkat Rom for the N7100.

Currently i am running PA as my primary rom and i have installed around 6 other roms (Omni, Slimkat, Miui, Liquid smooth, CM 11, ) as secondary. All of these are working fine.

give multirom a try.
 

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  • 79
    vh3puLb.png
    Introduction
    MultiROM is one-of-a-kind multi-boot mod for Samsung Galaxy Note II. It can boot any Android ROM as well as other systems like Ubuntu Touch, once they are ported to that device. Besides booting from device's internal memory, MultiROM can boot from USB drive connected to the device via OTG cable. The main part of MultiROM is a boot manager, which appears every time your device starts and lets you choose the ROM to boot. You can see how it looks on the left image below and in gallery. ROMs are installed and managed via modified TWRP recovery. You can use standard ZIP files to install secondary Android ROMs and MultiROM even has its own installer system, which can be used to support other Linux-based systems.

    Features:
    * Multiboot any number of Android ROMs
    * Restore nandroid backup as secondary ROM
    * Boot from USB drive attached via OTG cable
    * Install ROM to external SD card [Newly Added feature]

    You can also a video which shows it in action.

    Warning!
    It _is_ dangerous. This whole thing is basically one giant hack - none of these systems are made with multibooting in mind. It is no longer messing with data partition or boot sector, but it is possible that something goes wrong and you will have to flash factory images again. Make backups. Always.

    Installation
    1. Via MultiROM Manager - This at present does not have support for n7100, working on getting it enabled.
    This is the easiest way to install everything MultiROM needs. Install the and select MultiROM and recovery on the Install/Update card. If the Status card says Kernel: doesn't have kexec-hardboot patch! in red letters, you have to install also patched kernel - either select one on the Install/Update card or get some 3rd-party kernel (the 3rd party kernel should also have kexec-hardboot patch) here on XDA. You are chosing kernel for your primary ROM, not any of your (future) secondary ROMs, so select the version accordingly.
    Press "Install" on the Install/Update card to start the installation.​

    2.Manual installation
    Firstly, there are videos on . If you want, just search for "MultiROM installation" on and those, big thanks to all who made them. There is also an awesome article on Linux Journal.

    Note 1: Your device must not be encrypted (hint: if you don't know what it is, then it is not encrypted).​

    MultiROM has 3 parts you need to install:

    • MultiROM (multirom-YYYYMMDD-vXX-t03g.zip) - the ZIP file from second post and flash it in recovery.
    • Modified recovery (TWRP_multirom_t03g_YYYYMMDD.img) - the zip file from second post and flash it in recovery.
    • Patched kernel - You can use either one of the stock ones in second post or third-party kernels which include the patch, you can see list in the second post. Download the ZIP file and flash it in recovery.

    You current ROM will not be erased by the installation.
    Download links are in the second post.

    Adding ROMs
    1. Android
    Go to recovery, select Advanced -> MultiROM -> Add ROM. Select the ROM's zip file and confirm. As for the space, clean installation of stock 4.4 after first boot (with dalvik cache generated and connected to google account) takes 676mb of space.
    2. Ubuntu Touch
    Use the MultiROM Manager app to install Ubuntu Touch.

    Ubuntu Touch is in development - MultiROM will have to be updated to keep up with future changes in Ubuntu, so there's a good chance this method stops working after a while and I'll have to fix it.

    3. Firefox OS
    Firefox OS is just another Android ROM from MultiROM's point of view, so grab the ZIP file from Firefox OS' thread and add it as if it were Android

    Using USB drive
    During installation, recovery lets you select install location. Plug in the USB drive, wait a while and press "refresh" so that it shows partitions on the USB drive. You just select the location (extX, NTFS and FAT32 partitions are supported) and proceed with the installation.
    If you wanna use other than default FAT32 partition, just format it in PC. If you don't know how/don't know where to find out how, you probably should not try installing MultiROM.
    If you are installing to NTFS or FAT32 partition, recovery asks you to set image size for all the partitions - this cannot be easilly changed afterward, so choose carefully. FAT32 is limited to maximum of 4095MB per image - it is limitation of the filesystem, I can do nothing about that.
    Installation to USB drives takes a bit longer, because the flash drive is (usually) slower and it needs to create the images, so installation of Ubuntu to 4Gb image on my pretty fast USB drive takes about 20 minutes.
    Enumerating USB drive can take a while in MultiROM menu, so when you press the "USB" button in MultiROM, wait a while (max. 30-45s) until it searches the USB drive. It does it by itself, no need to press something, just wait.​


    Updating/changing ROMs
    1. Primary ROM (Internal)
    • Flash ROM's ZIP file as usual, do factory reset if needed (it won't erase secondary ROMs)
    • Go to Advanced -> MultiROM in recovery and do Inject curr. boot sector and then reboot.
    2. Secondary Android ROMs
    If you want to change the ROM, delete it and add new one. To update ROM, follow these steps:
    • Go to Advanced -> MultiROM -> List ROMs and select the ROM you want to update.
    • Select "Flash ZIP" and flash ROM's ZIP file.
    • To flash GAPPs for the Secondary ROMS, Go to Advanced -> MultiROM -> List ROMs and select the ROM you want to update.
    • Select "Flash ZIP" and flash GAPPS ZIP file.

    Installing of Touchwiz as Primary Rom & AOSP ROM as Secondary.

    1. Boot into recovery and flash Modified TWRP Multirom recovery
    2. Next, Flash the Multirom zip.
    3. Next, Flash the Modified Agni Stock Kernel and then flash the Mali blobs zip too and finally reboot the phone
    4. Allow the phone to auto boot into the touchwiz rom. Once booted reboot the phone into recovery again.
    5. Now you can flash any AOSP rom as Secondary ROM. for that follow the below steps
    6. Select Multirom - > Add Rom -> ROM Type & Location to install the ROM -> AOSP ROM ZIP -> start the installation.
    7. After installation is complete, go back and select the AOSP ROM that you installed and select "Remove Boot.IMG".
    8. Reboot the Phone now and in the Multirom Manager Menu, select the secondary rom and allow it to Boot.

    Note : Wifi is not working on the AOSP ROM installed as secondary, this needs to be debugged further. I am guessing it is due to the kernel version installed on the stock rom versus the touchwiz roms. Apart from the wifi, all other features are working fine.​


    Source code
    MultiROM - https://github.com/Tasssadar/multirom/tree/master (branch master)
    Modified TWRP - https://github.com/Tasssadar/Team-Win-Recovery-Project (branch master)
    Kernel w/ kexec-hardboot patch - https://github.com/tilaksidduram/android_kernel_samsung_smdk4412/commits/kitkat
    MultiROM device tree - https://github.com/tilaksidduram/android_device_samsung_t03g

    Thanks a lot to Tasssadar for creating this awesome utility.

    XDA:DevDB Information
    MultiROM, Tool/Utility for the Samsung Galaxy Note II

    Contributors
    tilaksidduram

    Version Information
    Status: Beta

    Created 2014-10-10
    Last Updated 2014-10-11
    43
    Downloads

    1. Main downloads
    MultiROM: Multirom Zip

    Modified recovery for Multirom (based on TWRP) : Multirom Recovery zip

    Kernel with kexec hardboot patch for AOSP ROMs only : Kernel Zip
    Note : Other 3rd party AOSP Kernels like Agni, Plasma & Devil do not have the Kexec Hard-boot patch in them at present, so if you have flashed them on you primary ROM then you will not be able to boot into any of the secondary ROMS. I am working with the kernel owners to have the kexec hard-boot patch added into the kernel.

    Kernels for Secondary ROMS : These Kernels are not Kexec Hardboot enabled, install them to fix the WIFI Issue on secondary ROM.
    1. Omni ROM
    2. SlimKat ROM
    3. MIUI ROM
    4. CM 11
    5. Paranoid Android

    Kernel with kexec hardboot patch for Touchwiz ROMs only : Agni Kernel for Stock Touchwiz ROMs

    Kernel Developers, please merge this patch into your kernel - https://github.com/tilaksidduram/an...mmit/2c9d9821eaa7e250ffe89b67d0a6c8b1c8219bc4

    You need to have kernel with kexec-hardboot patch only in primary ROM

    2. Uninstaller

    MultiROM uninstaller : Zip
    Flash this ZIP file to remove MultiROM from your device. It will erase all secondary ROMs. If you don't want MultiROM menus in recovery, re-flash clean TWRP, but it is not needed - those menus don't do anything if MultiROM is not installed​
    22
    FAQ and other notes
    About security
    In order to make multi-booting possible, MultiROM has to sacrifice some security measures. Firstly, on secondary Android ROMs, /system is not mounted read-only. While there are other things preventing malicious software from messing with /system, this might potentialy make it easier for such software to attack that system.
    Next, MultiROM doesn't work with /data encryption. Not many people who use custom ROMs also use encryption anyway, so that isn't much of a concern.

    What do the ROMs share?
    All ROMs are separate, except /sdcard, which is shared between all Android ROMs.

    How many ROMs can I have?/Where are the ROMs stored?
    You can have as many ROMs as you can fit in your /sdcard. All the ROMs are stored in /sdcard/multirom/roms or on an USB drive. This folder is unaccessible in Android, to prevent mediascanner from scanning it. You can either in recovery, or obtain root and go to /data/media/0/multirom/roms.

    Can I have different versions of Android working alongside
    Yes. As long as you select "Don't shere kernel" when installing the secondary ROM, the systems are separated.
    MultiROM recovery says it's 2.6.3.0. Why isn't it updated to 2.6.3.*highernumber*?
    It is, it just shows wrong version.

    The menu with all the ROMs won't show up during boot, how to fix it?
    Either re-flash the MultiROM zip or go to recovery, Advanced -> MultiROM -> Inject curr. boot sector.

    The reason for this is that something rewrote your boot.img, which happens for example when you flash a kernel. MultiROM's boot menu is part of the boot image, so it has to be added into it again.​
    13
    To all, I was able to get WiFi working on most of the aosp Roms after flashing the respective Roms kernel. I have created a kernel zip for cm, pa, omni, miui and slim. I will post the zip file in some time. All u need to do is just flash this zip on the respective secondary rom . this only works when u have aosp based ROM as primary and secondary. Touchwiz is not supported yet. I am working on it still.

    Sent from my Galaxy Note II using XDA Premium 4 mobile app
    9
    Multirom twrp recovery has been updated to version 2.8.1.0, I will upload the same in some time.

    Regarding the secondary kernel, I am still working on it. There is one thing that I need to fix to get both TW and Aosp working. Not able to find the location to reserve memory in the kernel sources. Searching and searching but nothing yet. If there is any one with kernel knowledge and knows how it can be done for the exynos device then let me know I can surely work them to have it fixed.

    Sent from my Galaxy Note II using XDA Premium 4 mobile app
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