On Fri, 08 May 2015 14:23:39 -0400 The Wanderer <wande...@fastmail.fm> wrote:
> On 05/08/2015 at 02:16 PM, German wrote: > > > On Fri, 08 May 2015 13:40:01 -0400 The Wanderer > > <wande...@fastmail.fm> wrote: > > > >> On 05/08/2015 at 01:20 PM, German wrote: > > >>> Thanks, but some clarification is needed. Now I have two drives, > >>> failed and a spare. Both are 2TB in size. Failed drive probably > >>> has 1.6 TB data I'd like to recover. It has only one partition I > >>> suppose. > >> > >> That's bad. > >> > >> If the drive has only one partition, it probably has a single > >> filesystem taking up all of its space. > >> > >> When you create a ddrescue image from that partition, the new image > >> will take up _at least as much_ space as the original filesystem. > >> That's not the 1.6TB of "used" space; it's the full 2TB of "total" > >> space. (Plus however much space is taken up by the "index" file > >> used by ddrescue while doing its work.) > >> > >> That means that if your two 2TB drives are actually the same size, > >> the "good" one will not have enough space to store the image you > >> need to rescue from the "bad" one. > > > > Thanks Wanderer. So, I have no chances with two drives the same > > capacity? Would you advise to wait when I can get more capacity > > drive and only then to proceed as to save some head ache? > > Yes, that's what I'd do in your situation. A 2.5TB drive should be > more than enough; that would also let you store the > sdb_failed.ddrescuelog file on the same drive, if you need to, so you > don't have to worry about finding space for it elsewhere. > > > Once again, thanks for such a complete instructions. > > I wouldn't call the directions I gave "complete"; there's a lot of > details you'll still have to work out on your own, because they will > depend on the exact details of your failure and the recovery process. > Still, they should at least provide you a good starting point. > > Again, I would recommend that you install (and read the documentation > for) myrescue, and consider using that instead of ddrescue. I've used > both (as well as dd_rescue), but if memory serves I've had better > results with myrescue. > Thanks so much. I wait when I can get a bigger drive. Have a greatest day! -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: https://lists.debian.org/20150508143219.07338...@asterius.asterius.net
