Corinna Vinschen skrev: > On Sep 26 12:08, Dave Korn wrote: >> ----Original Message---- >> >From: Bengt-Arne Fjellner >> >Sent: 26 September 2005 11:43 >> >> > When using dd with flags conv=noerror,sync >> > It tries reading after the disc ends. >> > >> > This line in cygwin tries reading past end of media: >> > dd if=/dev/sdd of=kkkkkk bs=512 skip=156280250 conv=noerror,sync >> > dd: reading `/dev/sdd': Input/Output error >> > 21120+0 records in >> > 21120+0 records out >> > 10813440 bytes (11 MB) copied, 1.151 seconds, 9.4 MB/s >> > dd: reading `/dev/sdd': Input/Output error >> > 21120+1 records in >> > 21121+0 records out >> > repeats "forever" >> > >> >> > Stops at end of disk. Whos wrong? >> >> There is very definitely a problem with cygwin vs. dd, which I'm >> investigating. I've seen the same thing with CF%20memory cards, and >> initially thought it was directly related to the memcard driver, but I was becoming convinced it's a generic problem with cygwin's readv, and since you've found it shows up on hard drives as well, that confirms it for me. I'll get round to it late tonight. > > I've applied a patch which tries to workaround the strange behaviour of Win32 ReadFile when reading beyond EOF. Please give the next developers snapshot a try. > > > Corinna >
That works for me now with latest snapshot. Havent tested yet with a failing disk though. Reading /dev/fd0 fails :-( $ dd if=/dev/fd0 of=kkkkkk bs=512 conv=noerror,sync dd: opening `/dev/fd0': Invalid request code with snapshot cygwin1-20050928.dll -- Bengt-Arne Fjellner -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/
