DM900UHD Rescue mode problem - Our Dreambox World - Japhar Sim Forum - http://www.japhar.com/

#19890 - 11/09/19 08:13 AM Re: DM900 rescue mode problem [Re: Pamiko]
Admin Japhar Member Carpal Tunnel Registered: 10/19/10 Posts: 9993	Perhaps you should recreate by hand the missing partitions ? Go to rescue mode, if you are not already in rescue mode most probably. Code: echo "rescue" >> /proc/stb/fp/boot_mode && reboot Then check the partitions, below you have correct partitions from a working DM900UHD, Quote: opendreambox 2.5.0 dm900 >>> Your Dreambox has booted into RESCUE MODE. >>> Please log in as user 'root' (no password required), >>> then run 'help' to get further information. dm900 login: root root@dm900:~# 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: 7634944 sectors, 3728M Logical sector size: 512 Disk identifier (GUID): 30f082cc-2877-4689-9b2b-e1812454a613 Partition table holds up to 128 entries First usable sector is 34, last usable sector is 7634910 Number Start (sector) End (sector) Size Code Name 1 2048 65535 31.0M 0700 kernel 2 65536 2097151 992M 0700 rootfs 3 2097152 7634910 2703M 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 And try to recreate the same partitions, that seems to be lost. Let us know if you get something working, Admin DM920UHD : Quote: root@dm920:~# fdisk -lu /dev/mmcblk0 Found valid GPT with protective MBR; using GPT Disk /dev/mmcblk0: 15269888 sectors, 3360M Logical sector size: 512 Disk identifier (GUID): a157dc9b-d004-44e6-a25a-9c0d96d709f6 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 Perhaps you could restore your GPT partitions this way... from rescue partition. Quote: sgdisk /dev/mmcblk0 -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 DM900UHD : Quote: opendreambox 2.5.0 dm900 >>> Your Dreambox has booted into RESCUE MODE. >>> Please log in as user 'root' (no password required), >>> then run 'help' to get further information. dm900 login: root root@dm900:~# fdisk -lu /dev/mmcblk0 Found valid GPT with protective MBR; using GPT Disk /dev/mmcblk0: 7634944 sectors, 3728M Logical sector size: 512 Disk identifier (GUID): 30f082cc-2877-4689-9b2b-e1812454a613 Partition table holds up to 128 entries First usable sector is 34, last usable sector is 7634910 Number Start (sector) End (sector) Size Code Name 1 2048 65535 31.0M 0700 kernel 2 65536 2097151 992M 0700 rootfs 3 2097152 7634910 2703M 0700 data Should be... Quote: sgdisk /dev/mmcblk0 -z -n 1:2048:65535 -c 1:kernel -t 1:8301 -n 2:65536:2097151 -c 2:rootfs -t 2:8307 -n 3:2097152: -c 3:data -t 3:8300 _________________________
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Since I seems to have the same issue as you seems to have,
Same issue as if the nand flash chip has been damaged.
And noticed after (allot of) searching to the fault figured out that in my case the box just worked when I disconnect the front panel.
And thus, as it may seems that there is some issue with the front panel which I still need to find out..

In any case, see in the picture snap to see if you have the same errors before trying it,

It may also be the front panel in your case.
So, see if it also helps you..
Disconnect the flat cable from the front panel.
See with the usb serial mode if the box starts up and which ip it gets.
And test the box by the webif browser.

I'm not claiming that it is, buy may.
It's at least worth to try/

Attachments
Snap1.jpg (24 downloads)

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