Patch to change BMM partitions layout for Motorola Droid 4
The Motorola Droid 4 xt894 has a lot of memory space unused splitted in two partitions:
- /preinstall : 600 Mb
- /webtop : 1,4 Gb
/preinstall is the partition where are stored the preinstalled apps and /webtop is an abandoned partition that under Gingerbread was used for the webtop but since ICS has been abandoned.
We could install a rom in these partitions using:
- /preinstall for /system_2
- /webtop for /data_2
- sharing the /cache partition between /system_1 and /system_2
BMM is an advanced Recovery based on ClockworkMod natively created for the spyder xt909 but fully working on a lot of Motorola omap4 devices, Droid 4 xt894 included.
BMM allows you to install a rom in System_2 using the unused partitions but it uses this layout:
- it creates a virtual slot in /data/media/virtual/system_1/cache.img for /cache
- /cache for /system_2
- /webtop for /data_2
- /cdrom for /cache_2
and it does not use the partition /preinstall.
Using the patch here attached we can edit the BMM configuration and we do not touch the main system partitions and we can install a second system only using the unused partitions:
- /system_2 in /preinstall
- /data_2 in /webtop
- sharing the /cache partition with /system_1
How to install the patch:
- Install BMM
- Copy the .zip file to the external memory or memory card
- Reboot your phone and enter on BMM
- From the Install menu select the .zip file and instal on System_1
Risk of briking:
- No one: during installation the installer checks everything is ok and stop installation in case of problem
N.B.: BMM does not have the SELinux support so before install the official version of the cm11 with BMM avoiding the status 6 error you have to simply replace in the .zip the updater-script at this path:
.zip\META-INF\com\google\android\updater-script
with the updater-script in the zip file here attached and then you can install the modded .zip with bmm.
Attachment | Size |
---|---|
updater-script | 2.24 KB |
Patch to change BMM partitions layout for Droid4 xt894 v 3.2 | 126.09 KB |
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