Kernel 2.4.20 slackware coreutils 5.0
I think there is a bug in DD . Dd with conv=noerror,sync on a floppy disk does sometimes not work as aspected if an i/o appears ( in the middle ?? ) of an input block larger than 512bytes It seems that it fails to seek past the requested block ( or can this be a kernel bug ???? ) Exemple1 : A floppy with 2880 sectors of 512 bytes ( 1440 k ) sectors 1- 72 good sector 73 bad sector 74 bad sectors 75- 1439 same good , some bad sectors 1440 - 2880 good dd if=/dev/fd0 of=test bs=720k conv=sync,noerror dd: reading `/dev/fd0': Input/output error 0+1 records in 1+0 records out 0+3 records in 3+0 records out The result should be a file with a size of 1440k with this content : sectors 1-72 from the floppy , 1368 *512 bytes of null padding , sectors 1440-2880 from the floppy But the result is a file with a size of 2160k with this content : sectors 1-72 from the floppy , (1368+1440) * 512 bytes of null padding , sectors 1513 - 2880 from the floppy , 72 * 512 bytes of null padding. . This is going not to work at all on a raw device . Exemple 2 . dd if=/dev/fd0 of=test2 bs=1440k conv=sync,noerror should copy the first 72 sectors and pad with nulls till the final size of 1440k . Instead it seems it enters an endless loop , the size of test2 is of some GB , so i have to kill dd. The same problem in dd version 4.1 and perhaps others _______________________________________________ Bug-coreutils mailing list [EMAIL PROTECTED] http://mail.gnu.org/mailman/listinfo/bug-coreutils
