Problems with partition table

Question

I have a Prestigio 5044 Duo (PAP5044) with MTK6589. Basically, what I was trying to do was to resize /data partition, beacause it was only about 950Mb, by shrinking Internal SD card (/emmc) partition. For that I used Meteos MTK6589 Apllication.

After going all the steps I found out that Android OS was hanging during boot (like half-way to boot up, and it freezed with no error messages). Though, recovery (I have CWM) boots well.
After doing some research I found out, that partition table of the device was messed up after /cache partition. So, all system and recovery partititons are fine.

Here is fdisk output:

~ # fdisk -lu /dev/block/mmcblk0
Warning: ignoring extra data in partition table 5
Warning: ignoring extra data in partition table 5

Disk /dev/block/mmcblk0: 3853 MB, 3853516800 bytes
1 heads, 16 sectors/track, 470400 cylinders, total 7526400 sectors
Units = sectors of 1 * 512 = 512 bytes

              Device Boot      Start         End      Blocks  Id System
/dev/block/mmcblk0p1            1024        1022  2147483647+  5 Extended
Partition 1 does not end on cylinder boundary
/dev/block/mmcblk0p2           26624       47103       10240  83 Linux
Partition 2 does not end on cylinder boundary
/dev/block/mmcblk0p3           47104       67583       10240  83 Linux
Partition 3 does not end on cylinder boundary
/dev/block/mmcblk0p4           93184      105471        6144  83 Linux
Partition 4 does not end on cylinder boundary
/dev/block/mmcblk0p5          134144     1465343      665600  83 Linux
/dev/block/mmcblk0p6         7556096        1022  2143706111+ 83 Linux

And here are /proc/partitions and fstab:

~ # cat /proc/partitions 
major minor  #blocks  name

 179        0    3763200 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    2901504 mmcblk0p7
 179       64       2048 mmcblk0boot1
 179       32       2048 mmcblk0boot0
 179       96   31338496 mmcblk1
 179       97   31334400 mmcblk1p1
~ # cat /etc/fstab 
/dev/block/mmcblk0p6 /cache ext4 rw
/dev/block/mmcblk0p7 /data ext4 rw
/dev/block/mmcblk0p8 /emmc vfat rw
/dev/block/mmcblk0p5 /system ext4 rw
/dev/block/mmcblk1p1 /sdcard vfat rw
/dev/block/mmcblk1p2 /sd-ext auto rw

So, on mmcblk0 there must be 10 partitions, and now there are only 6, according to fdisk.

I have two ideas how it is possible to restore partitions: 1) manually with fdisk, though it doesn't seem like a very good idea 2) I've found some info about scatter file for MTK-based devices, seems like it contains all the partitioning info; I have no idea how to get and use that file, though.

What should I do to recover my device?

Answer 1

I don’t know the asked partition restore process, but there is a solution that works, and the phone will work again. You will need 1. 1.0.42 full image ROM for Flashtool 2. SP Flashtool 3. EBRtweak 4. CWM 6.0.4.4

Solution: 1. Extract 1.0.42 ROM 2. Copy the EBRtweak into the ROM folder, and run with the asked option (like 2,5 GB) 3. Delete the EBR*.bak from the ROM folder 4. Copy the CWM 6.0.4.4 recovery.img to the ROM folder 5. Run CheckSum_Generate.exe 6. Flash with SP Flashtool the MT6589_Android_scatter_emmc.txt file from the 1.0.42 ROM folder. 7. Boot into recovery mode and go to mounts and storage: format /data, format/cache 8. Reboot system.

If you need any of those files, write me and I'll send it to you.