Description on partitions of Android Rom

 1. View partition information

ADB Shell

Su # obtain root permissions CAT/proc/MTD view partition information

Dev: Size erasesize name
Mtd0: 00040000 00020000 "preloader"
Mtd1: 000c00000 00020000 "dsp_bl"
Mtd2: 00300000 00020000 "NVRAM"
Mtd3: 00020000 00020000 "seccnfg"
Mtd4: 00060000 00020000 "uboot"
Mtd5: 00600000 00020000 "Boot"
Mtd6: 00600000 00020000 "recovery"
Mtd7: 00120000 00020000 "secstatic"
Mtd8: 00060000 00020000 "Misc"
Mtd9: 00300000 00020000 "logo"
Mtd10: 000a0000 00020000 "expdb"
Mtd11: 0c80000000020000 "system"
Mtd12: 03c00000020000 "cache"
Mtd13: 0dc2000000020000 "userdata"

Use mtd_debug command to learn more about partition information

Mtd_debug info/dev/mtd5 view boot partition information

2,

Back-to-Backup Flash_image remg/sdcard/recovery. img

3,

ADB shell Su;

CAT/dev/MTD/mtd4>/sdcard/boot. IMG put it on the SD card

CAT/dev/MTD/mtd0> put mtd0.img on the local hard disk.