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?

— Eugen Tverdokhleb | Sources

Answer

I donâ€™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.

— SystemManager Free | Sources

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