Dm920 Flash Disk doesn't contain a valid partition table !!!

hi

i was flashing newnigma2 image on my dm920 but after reboot, red light on pannel is on and it's not working.

i tried to flash it again but it seems the device is completely down :

Console log :

      [*] Mounting '/dev/mmcblk0p3' to '/data'
mount: wrong fs type, bad option, bad superblock on /dev/mmcblk0p3,       missing codepage or helper program, or other error
       In some cases useful info is found in syslog - try       dmesg | tail or so.
Warning: Failed to mount data filesystem
[*] Mounting '/dev/mmcblk0p3' to '/data'
mount: wrong fs type, bad option, bad superblock on /dev/mmcblk0p3,       missing codepage or helper program, or other error
       In some cases useful info is found in syslog - try       dmesg | tail or so.
Warning: Failed to mount data filesystem
[*] Creating ext4 filesystem 'dreambox-rootfs' on /dev/mmcblk0p2
mke2fs 1.43-WIP (18-May-2015)
Discarding device blocks:   4096/516096             done                            Creating filesystem with 516096 4k blocks and 129024 inodes
Filesystem UUID: e3e0253a-97c6-4d39-a201-bf73af7e1ee3
Superblock backups stored on blocks:     32768, 98304, 163840, 229376, 294912

Allocating group tables:  0/16     done                            Writing inode tables:  0/16     done                            Creating journal (8192 blocks): done
Writing superblocks and filesystem accounting information:  0/16     done

[*] Mounting '/dev/mmcblk0p2' to '/mnt'
mount: /dev/mmcblk0p2: can't read superblock
Fatal: Failed to mount root filesystem

PLEASE HELP ME 

output of : fdisk -lu is :

root@dm920:~# fdisk -lu

Disk /dev/mtdblock0: 2 MB, 2097152 bytes

255 heads, 63 sectors/track, 0 cylinders, total 4096 sectors

Units = sectors of 1 * 512 = 512 bytes

Disk /dev/mtdblock0 doesn't contain a valid partition table

Disk /dev/mtdblock1: 0 MB, 131072 bytes

255 heads, 63 sectors/track, 0 cylinders, total 256 sectors

Units = sectors of 1 * 512 = 512 bytes

Disk /dev/mtdblock1 doesn't contain a valid partition table

Disk /dev/mtdblock2: 0 MB, 131072 bytes

255 heads, 63 sectors/track, 0 cylinders, total 256 sectors

Units = sectors of 1 * 512 = 512 bytes

Disk /dev/mtdblock2 doesn't contain a valid partition table

Disk /dev/mtdblock3: 14 MB, 14417920 bytes

255 heads, 63 sectors/track, 1 cylinders, total 28160 sectors

Units = sectors of 1 * 512 = 512 bytes

Disk /dev/mtdblock3 doesn't contain a valid partition table

Disk /dev/mtdblock4: 33 MB, 33554432 bytes

255 heads, 63 sectors/track, 4 cylinders, total 65536 sectors

Units = sectors of 1 * 512 = 512 bytes

Disk /dev/mtdblock4 doesn't contain a valid partition table

Found valid GPT with protective MBR; using GPT

Disk /dev/mmcblk0: 15269888 sectors, 3360M

Logical sector size: 512

Disk identifier (GUID): 0f0f33f9-4c5a-4efd-946a-9d281bb4426d

Partition table holds up to 128 entries

First usable sector is 34, last usable sector is 15269854

Number Start (sector) End (sector) Size Code Name

1 2048 65535 31.0M 0700 kernel

2 65536 4194303 2016M 0700 rootfs

3 4194304 15269854 5407M 0700 data

Disk /dev/mmcblk0boot1: 4 MB, 4194304 bytes

4 heads, 16 sectors/track, 128 cylinders, total 8192 sectors

Units = sectors of 1 * 512 = 512 bytes

Disk /dev/mmcblk0boot1 doesn't contain a valid partition table

Disk /dev/mmcblk0boot0: 4 MB, 4194304 bytes

4 heads, 16 sectors/track, 128 cylinders, total 8192 sectors

Units = sectors of 1 * 512 = 512 bytes

Disk /dev/mmcblk0boot0 doesn't contain a valid partition table

i already tried this :

sgdisk /dev/mtdblock0 -z -n 1:2048:65535 -c 1:kernel -t 1:8301 -n

2:65536:4194303 -c 2:rootfs -t 2:8307 -n 3:4194304: -c 3:data -t 3:8300

but this is the output :

root@dm920:~# sgdisk /dev/mtdblock0 -z -n 1:2048:65535 -c 1:kernel -t 1:8301 -n

2:65536:4194303 -c 2:rootfs -t 2:8307 -n 3:4194304: -c 3:data -t 3:8300

Creating new GPT entries.

Warning: The kernel is still using the old partition table.

The new table will be used at the next reboot or after you

run partprobe(8) or kpartx(8)

GPT data structures destroyed! You may now partition the disk using fdisk or

other utilities.

Could not create partition 1 from 2048 to 65535

Setting name!

partNum is 0

REALLY setting name!

Unable to set partition 1's name to 'kernel'!

Could not change partition 1's type code to 8301!

Could not create partition 2 from 65536 to 4194303

Setting name!

partNum is 1

REALLY setting name!

Unable to set partition 2's name to 'rootfs'!

Could not change partition 2's type code to 8307!

Could not create partition 3 from 4194304 to 4062

Setting name!

partNum is 2

REALLY setting name!

Unable to set partition 3's name to 'data'!

Could not change partition 3's type code to 8300!

Error encountered; not saving changes.

Hi sir

i don't have any power supply, i have to find or buy some

i just hve the default power supply.

no i have never used any multiboot

i have to check it,

thank you

i tried to update it but this is the result

and the box is running just in rescue mode so i can't upload any firmware

i have lost my box for ever i think

i found the problem :

[*] Downloading 'http://dreamboxupdate.com/download/recovery/dm920/release/recovery.sig'
[*] Downloading 'http://dreamboxupdate.com/download/recovery/dm920/release/recovery'
[*] Verifying signature of 'recovery'
gpgv: Signature made Mon Dec 11 21:41:43 2017 UTC using RSA key ID B3C5B1A3
gpgv: Good signature from "Dreambox DM920 Recovery <dm920@recovery.dreambox.de>"
[*] Running './recovery'
[*] Options '-v'
Fatal: Target device '/dev/mmcblk0p2' is not writable
Fatal: Failed to execute './recovery'

look, the default target device is /dev/mmcblk0p2 but in my device all addresses are something else (mtdblock0,1,2,3,4) :

HOW IT CAN BE ???

Disk /dev/mtdblock0: 2 MB, 2097152 bytes

255 heads, 63 sectors/track, 0 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Disk /dev/mtdblock0 doesn't contain a valid partition table

Disk /dev/mtdblock1: 0 MB, 131072 bytes

255 heads, 63 sectors/track, 0 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Disk /dev/mtdblock1 doesn't contain a valid partition table

Disk /dev/mtdblock2: 0 MB, 131072 bytes

255 heads, 63 sectors/track, 0 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Disk /dev/mtdblock2 doesn't contain a valid partition table

Disk /dev/mtdblock3: 14 MB, 14417920 bytes

255 heads, 63 sectors/track, 1 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Disk /dev/mtdblock3 doesn't contain a valid partition table

Disk /dev/mtdblock4: 33 MB, 33554432 bytes

255 heads, 63 sectors/track, 4 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Disk /dev/mtdblock4 doesn't contain a valid partition table

fdisk: can't read from /dev/mmcblk0

Hi everyone

PLEASE HELP ME TO CORRECT THE PARTITION TABLE OF MY DM 920

is anybody connected to the gutemine? i think he can help me

Quote from gobi2000

Stop to boot

and send comand sgdisk -Z /dev/mmcblk0

restare recovery mod and flash you box.

The Result :

root@dm920:~# sgdisk -Z /dev/mmcblk0

Problem opening /dev/mmcblk0 for reading! Error is 2.

The specified file does not exist!

Problem opening '' for writing! Program will now terminate.

Warning! MBR not overwritten! Error is 2!

Quote from piterfree

Disk /dev/mtdblock4 doesn't contain a valid partition table

fdisk: can't read from /dev/mmcblk0

problemi...??

8_Fatal: Target device '/dev/mmcblk0p2' is not writable

multiboot...delete...!!

Display More

i dont have any multiboot

Quote from piterfree

1* what PC do you use...??

2* the front lights up...only red LED,

3* if you are near Milan I can give you a hand....and then if you can use DCC to enter the decoder to change the boot folder...I have I did a similar thing on Mutants 51 4k, I managed to restore it with the files that I posted on a forum that I changed in the decoder and it worked restored by installing soft with USB.

1. i'm using a dell pc

2. yes just red light and DREAMBOX logo on Pannel

3. no i'm not near yo bro