On 1/5/10, Yuri Pankov <yuri.pan...@gmail.com> wrote: > On Tue, Jan 05, 2010 at 03:31:46PM +0100, Christoph Kukulies wrote: >> I recall a case when I had a hard disk that had got bad sectors and >> it wasn't accessible through normal mounting anymore. >> Then a tool came into the game that - I believe - Poul Henning had >> recommended or written for this purpose. >> >> It copies a disk sector by sector to a file (kind of dd), but >> ignores errors, it just skips sectors it couldn't read (after a >> couple >> of retries). The result was, that one had a - albeit - worm-eaten - >> image of the disk allowing to access the filesystem >> and getting to the important files with a little luck these not >> being amongst the corrupted data. >> >> Anyone knowing what this little tool was named? Something like >> diskcopy, devcopy, I forgot. >> >> -- >> Christoph > > dd conv=noerror?
I think you need sync also. E.g. dd if=/dev/ad3 of=disk.img bs=512 conv=sync,noerror will replace the unreadable blocks with blocks of NULs. -- -- Bob Johnson _______________________________________________ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
