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[MOD][26 FEB 2015] [D855 Only] Multirom

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Skin1980

Inactive Recognized Developer
Nov 25, 2009
2,490
6,230
vh3puLb.png
Introduction

MultiROM is one-of-a-kind multi-boot mod for Nexus 5. 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 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 ship 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

You can also watch 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 app
This is the easiest way to install everything MultiROM needs. Install the app 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 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 youtube. If you want, just search for "MultiROM installation" on youtube and watch 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-d855.zip) - download the ZIP file from second post and flash it in recovery.
  • Modified recovery (TWRP_multirom_d855_YYYYMMDD.img) - download the IMG file from second post and use fastboot or Flashify app to flash it.
  • 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 4.2 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 Touc​
h.

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​

4. SailfishOS
  • Download CyanogenMod and SailfishOS ZIP as described on Sailfish wiki page. You need alpha2 (20140810) or newer!
  • Put both CM and SailfishZIP on your device.
  • Reboot into recovery
  • Advanced -> MultiROM -> Add ROM
  • Choose "SailfishOS" as ROM type. Installation to USB drive is not supported, so leave install location as is. Click Next.
  • Choose first CyanogenMod ZIP and then SailfishOS ZIP. Click install.
Head to SailfishOS thread for more info: http://forum.xda-developers.com/google-nexus-5/development/rom-sailfish-os-alpha-t2841266



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.
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.



Source code

Kernel https://github.com/Skin1980/D855-kernel/tree/lollipop
Device Tree https://github.com/Skin1980/device-d855-multirom
TWRP https://github.com/Skin1980/Team-Win-Recovery-Project

Credits: @tassadar for the awesome work; @invisiblek and @savoca @patrik.KT for them help

...and all the people that now i forget
 
Last edited:

Skin1980

Inactive Recognized Developer
Nov 25, 2009
2,490
6,230
PLEASE READ THE MULTIROM WIKI TO UNDERSTAND BETTER WHAT YOU ARE DOING


Frequently
Asked
Questions


IMPORTANT: Need to be with a stock Rom ( tested with mine ChupaChupa 3.0 )

HOW TO INSTALL:


1- reboot in recovery and flash the new TWRP with Multirom support; --> HERE
2- reboot the recovery;
3- flash the kernel with the kexec hardboot patch ( it's my chupakernel 20D based, might works well also with the 20E roms) 2Gb/16 HERE and 3Gb/32 HERE
4- flash the multirom zip; ---> HERE
5- install every Rom you want ( advanced--> multirom --> add rom )
6- reboot and choose the rom you want to boot.

You can also use a Cyanogenmod or similar with the wonderful Rin Kernel by @Tectas --> DOWNLOAD FOLDER

KK Kernel for stock based roms ( based on rin kernel by @Tectas ) 2Gb HERE and 3Gb HERE

Issues:

1- on boot the touch need some seconds to work in multirom menu, you can use the volume keys to move and the power button to select.

Changelogs:

- 07.01.2015 fixed install issue for the secondary roms on TWRP
- 07.01.2015 fixed button layout in TWRP
- 08.01.2015 fixed kernel for the 3Gb version ( now the can multiboot too)
- 08.01.2015 fixed kernel version for both
- 08.01.2015 fixed install to external sd
- 08.01.2015 fixed TWRP version displayed
- 10.01.2015 fixed TWRP layout ( hopefully )
- 10.01.2015 fixed Installation of 2nd ROM from previous backup ( tested with CM12 nightly)
- 20.01.2015 added KK kernel
- 20.01.2015 bigger Multirom Menù
- 26.02.2015 fix for the latest Cyanogenmod


I posted this quickly and i will update ASAP.
 
Last edited:
G

GuestK00280

Guest
Great job!
I've got a request. Please, can you compile a KitKat kernel with multirom support? I'm still on 10o, and i won't change it for a long time...
 

zimmerAndy

Senior Member
Nov 19, 2010
1,885
520
how to restore a rom on second partition??

Thanks a lot for this mod awesome find 1 thing how to restore a rom on second partition???
 

iSnob

Senior Member
Jan 12, 2011
56
7
Multirom app say my device is unsupported ,where i find the modified recovery?
Ok sorry man with tapatalk dont show link
 
Last edited:

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  • 145
    vh3puLb.png
    Introduction

    MultiROM is one-of-a-kind multi-boot mod for Nexus 5. 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 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 ship 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

    You can also watch 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 app
    This is the easiest way to install everything MultiROM needs. Install the app 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 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 youtube. If you want, just search for "MultiROM installation" on youtube and watch 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-d855.zip) - download the ZIP file from second post and flash it in recovery.
    • Modified recovery (TWRP_multirom_d855_YYYYMMDD.img) - download the IMG file from second post and use fastboot or Flashify app to flash it.
    • 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 4.2 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 Touc​
    h.

    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​

    4. SailfishOS
    • Download CyanogenMod and SailfishOS ZIP as described on Sailfish wiki page. You need alpha2 (20140810) or newer!
    • Put both CM and SailfishZIP on your device.
    • Reboot into recovery
    • Advanced -> MultiROM -> Add ROM
    • Choose "SailfishOS" as ROM type. Installation to USB drive is not supported, so leave install location as is. Click Next.
    • Choose first CyanogenMod ZIP and then SailfishOS ZIP. Click install.
    Head to SailfishOS thread for more info: http://forum.xda-developers.com/google-nexus-5/development/rom-sailfish-os-alpha-t2841266



    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.
    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.



    Source code

    Kernel https://github.com/Skin1980/D855-kernel/tree/lollipop
    Device Tree https://github.com/Skin1980/device-d855-multirom
    TWRP https://github.com/Skin1980/Team-Win-Recovery-Project

    Credits: @tassadar for the awesome work; @invisiblek and @savoca @patrik.KT for them help

    ...and all the people that now i forget
    74
    PLEASE READ THE MULTIROM WIKI TO UNDERSTAND BETTER WHAT YOU ARE DOING


    Frequently
    Asked
    Questions


    IMPORTANT: Need to be with a stock Rom ( tested with mine ChupaChupa 3.0 )

    HOW TO INSTALL:


    1- reboot in recovery and flash the new TWRP with Multirom support; --> HERE
    2- reboot the recovery;
    3- flash the kernel with the kexec hardboot patch ( it's my chupakernel 20D based, might works well also with the 20E roms) 2Gb/16 HERE and 3Gb/32 HERE
    4- flash the multirom zip; ---> HERE
    5- install every Rom you want ( advanced--> multirom --> add rom )
    6- reboot and choose the rom you want to boot.

    You can also use a Cyanogenmod or similar with the wonderful Rin Kernel by @Tectas --> DOWNLOAD FOLDER

    KK Kernel for stock based roms ( based on rin kernel by @Tectas ) 2Gb HERE and 3Gb HERE

    Issues:

    1- on boot the touch need some seconds to work in multirom menu, you can use the volume keys to move and the power button to select.

    Changelogs:

    - 07.01.2015 fixed install issue for the secondary roms on TWRP
    - 07.01.2015 fixed button layout in TWRP
    - 08.01.2015 fixed kernel for the 3Gb version ( now the can multiboot too)
    - 08.01.2015 fixed kernel version for both
    - 08.01.2015 fixed install to external sd
    - 08.01.2015 fixed TWRP version displayed
    - 10.01.2015 fixed TWRP layout ( hopefully )
    - 10.01.2015 fixed Installation of 2nd ROM from previous backup ( tested with CM12 nightly)
    - 20.01.2015 added KK kernel
    - 20.01.2015 bigger Multirom Menù
    - 26.02.2015 fix for the latest Cyanogenmod


    I posted this quickly and i will update ASAP.
    18
    UPDATE 20.01.2015:

    - Added KK kernel based on Rin Kernel ( for stock based rom );
    - Bigger MR menù
    15
    Pls try with this TWRP: https://www.androidfilehost.com/?fid=95916177934534593

    and then flash this multirom zip https://www.androidfilehost.com/?fid=95916177934534578

    ...after that you can flash the latest cyano as secondary but you still need the latest 777 or furnace or RIN kernels.