After you finish backing up the files perhaps you could write up a little summary for the list of the successful rescue steps that you took. That way people who remember this conversation can see the solution if they ever need to look it up in the future.
Of course, all of us know better and always back up our data... *grin* --Christopher Conroy On Mon, Feb 2, 2009 at 5:24 PM, Jin-Ho Yoon <[email protected]> wrote: > Dear All, > > It seems that the data is saved now. Thank you very much for > suggestions and advices!! > > One thing i was confused was that i used 'LVM2' (default in RHEL5.x). > So before i do fsck, i have to do a couple of things for LVM > (i got them from googling...). > Afterwards, i can do 'fsck' and the disk is saved. > Well, i am rushing to back up files i need. > > Thanks again! > > -Jinho > > > > > > > > > > On Mon, 2 Feb 2009, Edward M. Condon wrote: > > >> I got 'Knoppix' and tried to mount it. But, i cannot do that. >>> I cannot do 'fsck' or 'dumpe2fs' to fix/see the HDs. >>> Seems to me that superblock is damaged and cannot be found now. >>> >>> Any suggestion at this stage? >>> >> >> After you boot from the knoppix CD: >> >> (1) Open a terminal window. >> >> (2) "su" to root. >> >> (3) In the terminal window as root, type: >> >> fdisk -l >> >> which should list disk and partition information (if available). If some >> disk info is displayed, then this may be more indicative of a filesystem >> type problem which is more recoverable in general. >> >> If you do not see any disk info, this may indicate a hardware type problem >> which can be more difficult to recover from. Hardware problems are often >> accompanied by noises. This page has some sound samples you may be able to >> compare to: >> >> http://datacent.com/hard_drive_sounds.php >> >> >> If the device seems accessible from an operating system, it would probably >> be a good idea to try making an image file of the disk and trying any >> recovery software tools on the disk image file instead of the disk itself. >> I've found the "dd_rhelp" command (available on some live CD's such as >> Helix) to be useful for making images of damaged disks. This is probably >> not the best resource, but this page has some info on using "dd_rhelp": >> >> >> http://www.ubuntugeek.com/recover-data-from-a-damaged-hard-disk-using-dd_rhelp.html >> >> (If you use a live CD that includes it already, you probably don't need to >> download and build it.) >> >> If you can acquire some type of image file, then you can try running some >> file repair/data recovery/forensic type tools on it to look for files. For >> Windows type file-systems (FAT12, FAT16, FAT32, NTFS, NTFS5), I've had good >> success with the commercial program "Restorer2000 Pro" (~$50 US, but worth >> it simply for the time-saving factor and it will work with disk image >> files): >> >> http://www.restorer2000.com/ >> >> For other type file-systems, you can try some of their native repair >> utilities or forensic file-carving type programs: >> >> http://www.forensicswiki.org/wiki/Tools:Data_Recovery >> >> (There are some good freeware programs, but they may require some effort >> to figure out how to use effectively.) >> >> If it's a hardware related problem and you really need your data and can >> afford it, a professional service is your best option. For some hardware >> related information about hard drive data recovery, you can take a look at >> some of Scott Moulton's presentations at: >> >> http://www.myharddrivedied.com/presentations/ >> >> There may not be very much practical do-it-yourself type information for >> handling hardware problems, but you can get an idea of how the recovery >> process works. >> >> >> -Ed >> >>
