Hello Karol, As far as I know, this mailing list is intended to discussing ddrescue bugs, e.g. improvements, strange behaviour, etc.
If your data are very important, consider asking from a professional. If you plan to try the recovery process on your own, gather all hardware and knowledge needed before you start the actual recovery: 1) Set a computer, with reliable components and up-to-date Linux system, available during several days or weeks non-stop; 2) Check the hardware: SMART for the backup hard drive (e.g. smartmontools, gsmartcontrol), check RAM, etc.; 3) Read manuals and tutorials, you need to understand what you are doing (e.g. search for ddrescue tutorial); 4) When you start the recovery process, write down the commands used and use a logfile for ddrescue. 5) Once you have an image of the drive, try to extract data (preferably from a copy of the image) with tools such as testdisk or photorec. Good luck, Adrien 2014-02-06 4:45 GMT+00:00 Karol Baum <[email protected]>: > Hi, All. > First of all, apologize if this is not the correct way to post, in order > to get information about ddrescue and related tools. I looked for how to > post this notes but I only find this email account. > > I have an external 1 TB USB ADATA Hard Drive, model CH11. > Probably because of a misconnection, it began to fail. I have bit more > than 60% of the disk full of information. > At the very first beginning, the disk continued being recongnized by > Windows, but loosing only its personalized name. Nevertheless, the access > to data was impossible, because of a cyclic redundancy check error. > In Windows Drive Manager, the disk shows with is proper manufacturer name > and says also that the driver works properly. > In Windows Disk Manager, the disk was shown as only one healthy partition. > Nevertheless, the filesystem was shown as RAW. > Of course, chkdsk did not recongnize the disk. > I have tried to recover it using many tools, first trying to clone it with > clonezilla, without results. Also trying to copy the data to another > TOSHIBA 2 TB HDD with HDD Guru RAW Copy tool, but nothing. Also, I tried > GetDataBack without success. > I boot with Ubuntu Live CD and also used GParted, but was not able neither > to recover the MBR, nor the MFT (may be... because of my ignorance...). > So far, the partition is shown as unallocated in Windows. And each time I > connect the disk the OS asks me to boot the disk with MRB or GBT. I have > tried with both, but nothing. Trying to boot again with Ubuntu, the OS says > that the disk has GBT filesystem, and advise me to use GParted. > So, actual status: I have used an hexadecimal editor and have seen that > around the first 8,000 sector appear with "READ ERROR". Then, there is one > sectorr which seems the MBR copy that NTFS disks always have. The next > sector seems related to NTDLR. Then, I can find white sectors, then sectors > "READ ERROR", and sectors with data beginning with "INDX(". I download > another HEX editor and began to manually copy good sectors from my drive to > the other editor, saving files with names like this: > "offset_begin-offset-end". But I was not able to advance so much, and in > another process the mentioned MBR probably sector was shown as "READ ERROR" > (but, I have copied it in the previous step). > > Finally: I discovered these tools.... > > dd > ddrescue (with lzip and lziprecover) > ddrecuelog > rescue-remix > ddrutility > ddru_findbad > ddru_ntfsbitmap > ddru_ntfsfindbad > osforensics > bootmed > bootmedplus > Roadkil's Unstoppable Copier > > So, I feel that the only thing I have done well was not writing anything > to the disk. > Unfortunately, I did not know, till yesterday, that damaged disks become > worse every time we try to boot them. > > So, I understand now what I should have done from the beginning: trace a > plan to recover my disk. > > I want to mentioned that the post between Scott Dwyer and Andrej Troventar > was very very helpful for me. Unfortunately, I found it the day before > yesterday (http://comments.gmane.org/gmane.comp.sysutils.ddrescue/783 and > http://osdir.com/ml/bug-ddrescue-gnu/2013-11/msg00009.html). > > So, PLEASE: SOS, SOS, SOS, SOS!!!! > Give me, please, all your advises, and correct all what I will write here > below. > > 1. I understand that my previous step would be carefully reading the GNU > ddrescue tutorial. > > 2. But I am a bit confused which tools I should use and which not; and in > which order I should use them. > > 3. I guess that, may be, my first step with the disk should be running > ddrescue in reverse mode. > > 4. Then, use ddru_ntfsbitmap to create a second domain and use it with > ddrescue. > > From here onwards, I do not know what to do. Honestly, I need to read once > and twice the documentation. > > All your help will be very much appreciate!! > > Thanks a lot in advance and best regards! > > Karol. > > > > _______________________________________________ > Bug-ddrescue mailing list > [email protected] > https://lists.gnu.org/mailman/listinfo/bug-ddrescue > >
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