What is boot.img file in android?

android android-source
Foad Rezek picture Foad Rezek · Jan 16, 2014 · Viewed 99k times · Source

I am building the android source code and getting new system.img . I try to flash the new system.img on a device and I see that I need another file called boot.img. What is this file ? what is used for ? how can I get it for my device ?

Answer

rcbevans picture rcbevans · Jan 16, 2014

boot.img contains the kernel and ramdisk, critical files necessary to load the device before the filesystem can be mounted. You have to generate the boot.img yourself using mkbootimg, a tool provided by AOSP.

All the details you need are available at this xda-developers thread.

This google discussion thread may also be useful

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