[GLLUG] Linux Type File System Recovery

[Ex Fed]

Hello Gluggers:
 
 
In one of the departments I help, entomology ......  We have more than a few DVRS from Q-see.  We use them to record insect behavior in the field and observe at a later date. 
 
One of the DVRs evidently went down due to power fluctuation, now the Filesystem on the disk is not readible on the DVR, so we lost some recording.  I figured I would try and recover some files off of the drive.  
 
>From what QSEE techs told me .... these DVRS run some minimized linux distribution... they don't know the partion type but they did say they didn't think the partition or files were encrypted.  
 
I have a known good hard drive from one of these DVRS.   I put this in a USB dock.    
 
 
 
On Red hat ....  FDISK shows two partitions  for this.  
 
Partition                                 ID                          Type
/dev/sdb1                               c                            Win 95 Fat 32 (LBA)
/dev/sdb2                               83                          Linux  
 
Mount shows that /dev/sdb1 is mounted as ext2 and I can see files on it.    even though fdisk shows it as FAT.  
 
 
That first .... one partion mounts automatically with Red Hat .. the other larger second one one with the H.264 files is not mounting.  
 
On this known good and DVR recognizable drive .....  I tried the mount command on the second partition ....   with all different file types ... Reisers, EXT2, 3, JFS, XFS and none of them seem to work.    Output from mount gives me  ... wrong fs type, bad option or bad super block.  I tried other superblocks too and it didn't work.  
 
Does anybody out there have any other suggestions I can try to mount this file system so I can recover files?  even GPARTED can't recognize the file system.  Tried that.
 
Thanks,
 
 
Lee Duynslager

  		 	   		  
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