[Q] How to extract boot.img from Zopo C7 ( MTK6589T) topic

First how to find location of boot image in device? I want to take current boot image. Do modifications and later flash that boot image back to device.

I have searched correct block device and did some image files with dd command but they were not boot images. I tried with several tools.

Here is some listing from the phone with adb shell commands.

Code:

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root@android:/proc # cat partitions                                           
major minor  #blocks  name

 179        0  30512256 mmcblk0
 179        1          1 mmcblk0p1
 179        2      10240 mmcblk0p2
 179        3      10240 mmcblk0p3
 179        4      6144 mmcblk0p4
 179        5    665600 mmcblk0p5
 179        6    129024 mmcblk0p6
 179        7    1572864 mmcblk0p7
 179        8  28077696 mmcblk0p8
 179      64      2048 mmcblk0boot1
 179      32      2048 mmcblk0boot0

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Code:

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root@android:/ # ls -l /emm*
lrwxrwxrwx root    root              1970-01-01 06:30 emmc@android -> /dev/block/mmcblk0p5
lrwxrwxrwx root    root              1970-01-01 06:30 emmc@cache -> /dev/block/mmcblk0p6
lrwxrwxrwx root    root              1970-01-01 06:30 emmc@ebr1 -> /dev/block/mmcblk0p1
lrwxrwxrwx root    root              1970-01-01 06:30 emmc@fat -> /dev/block/mmcblk0p8
lrwxrwxrwx root    root              1970-01-01 06:30 emmc@protect_f -> /dev/block/mmcblk0p2
lrwxrwxrwx root    root              1970-01-01 06:30 emmc@protect_s -> /dev/block/mmcblk0p3
lrwxrwxrwx root    root              1970-01-01 06:30 emmc@sec_ro -> /dev/block/mmcblk0p4
lrwxrwxrwx root    root              1970-01-01 06:30 emmc@usrdata -> /dev/block/mmcblk0p7
root@android:/ #

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Code:

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root@android:/dev/block # ls -al
brw------- root    root      7,  0 2014-03-12 12:54 loop0
brw------- root    root      7,  1 2014-03-12 12:54 loop1
brw------- root    root      7,  2 2014-03-12 12:54 loop2
brw------- root    root      7,  3 2014-03-12 12:54 loop3
brw------- root    root      7,  4 2014-03-12 12:54 loop4
brw------- root    root      7,  5 2014-03-12 12:54 loop5
brw------- root    root      7,  6 2014-03-12 12:54 loop6
brw------- root    root      7,  7 2014-03-12 12:54 loop7
brw-rw---- root    system  179,  0 2014-03-12 12:54 mmcblk0
brw------- root    root    179,  32 2014-03-12 12:54 mmcblk0boot0
brw------- root    root    179,  64 2014-03-12 12:54 mmcblk0boot1
brw------- root    root    179,  1 2014-03-12 12:54 mmcblk0p1
brw-r----- root    system  179,  2 2014-03-12 12:54 mmcblk0p2
brw------- root    root    179,  3 2014-03-12 12:54 mmcblk0p3
brw------- root    root    179,  4 2014-03-12 12:54 mmcblk0p4
brw------- root    root    179,  5 2014-03-12 12:54 mmcblk0p5
brw------- root    root    179,  6 2014-03-12 12:54 mmcblk0p6
brw------- root    root    179,  7 2014-03-12 12:54 mmcblk0p7
brw------- root    root    179,  8 2014-03-12 12:54 mmcblk0p8
drwxr-xr-x root    root              2014-03-12 12:54 platform
root@android:/dev/block #

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/dev/block/mmcblk0boot0 looked promising but I made image of it by by command dd if=/dev/block/mmcblk0boot0 of=/sdcard/boot.img
But the image was not boot image.

Code:

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root@android:/ # mount
rootfs / rootfs ro,relatime 0 0
tmpfs /dev tmpfs rw,nosuid,relatime,mode=755 0 0
devpts /dev/pts devpts rw,relatime,mode=600 0 0
proc /proc proc rw,relatime 0 0
sysfs /sys sysfs rw,relatime 0 0
none /acct cgroup rw,relatime,cpuacct 0 0
tmpfs /mnt/obb tmpfs rw,relatime,mode=755,gid=1000 0 0
emmc@android /system ext4 ro,noatime,noauto_da_alloc,commit=1,data=ordered 0 0
emmc@usrdata /data ext4 rw,nosuid,nodev,noatime,nodelalloc,noauto_da_alloc,commit=1,data=ordered 0 0
/emmc@protect_f /protect_f ext4 rw,nosuid,nodev,noatime,nodelalloc,noauto_da_alloc,commit=1,data=ordered 0 0
/emmc@protect_s /protect_s ext4 rw,nosuid,nodev,noatime,nodelalloc,noauto_da_alloc,commit=1,data=ordered 0 0
/emmc@fat /storage/sdcard0 vfat rw,dirsync,relatime,uid=1000,gid=1015,fmask=0702,dmask=0702,allow_utime=0020,codepage=cp437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro 0 0
root@android:/ #

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I can make full image by dding /dev/block/mmcblk0 but it would be better to get the parts separately.

Is there easy way to find where the boot image is located?