I have infamous Buffalo Linkstation (LS-CHL) NAS which had one 500GT disk in it. And one day it started to flash red lights and not responding over the net. I tried to put it in different "recovery modes" that it provides, but it didn't help.
I have some files in the disk that i would want to keep (I'd copy them to some cloud service..), thus I opened the box and inserted the disk inside of my PC and booted to Live Ubuntu to check it out.
When looked at with fdisk, the disk looks like that: 
/dev/sdb2 is mountable and it has operating system on it. If files are still intact, they should live on /dev/sdb6. What means extended on /dev/sdb4?
gparted do not identify filesystem on partition sdb6. I have tried to mount it anyways as ufs partition, without any luck
ubuntu@ubuntu:~$ sudo mount -t ufs /dev/sdb6 /mnt/recovery/
mount: /dev/sdb6 is write-protected, mounting read-only
mount: wrong fs type, bad option, bad superblock on /dev/sdb6,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so.
I have also tried to mount it with regular mounting options (ext2,3,4, auto), without any success.
What else could I try? UFSexplorer in Windows didn't find anything on that, which was not promising..
When trying to mount as UFS, dmesg says here this:
[ 5563.031225] ufs: ufs_fill_super(): bad magic number
I have googled around for few days and tested all ideas with raid. That's the second possibility that even if there is only one partition, it is a raid0 partition or something and thats why regular tools wont understand it.
ubuntu@ubuntu:~$ sudo mdadm --examine /dev/sdb6
mdadm: No md superblock detected on /dev/sdb6.
Yet it would not seem to be the case. Or is it, but superblock is just broken?
When using that same command against sdb4, it gave me something:
ubuntu@ubuntu:~$ sudo mdadm --examine /dev/sdb4
/dev/sdb4:
MBR Magic : aa55
Partition[0] : 2008062 sectors at 63 (type 82)
Partition[1] : 960960105 sectors at 2008125 (type 05)
Yet I dont know what that means or does it help me at all. Other examples that i've seen in the internet do not show such answers but a lot more informative ones.
Can you suggest me things that i should try? Do somebody know better Linkstations innerworkings and thus know what this is all about? Am I dealing with a broken raid, or maybe a broken filesystem?
