Re: dd problem

akonsu wrote: hello, i wanted to create an ISO image of a CDROM, so i ran this command: dd if=/dev/cd0a of=my.iso and i waited and waited for about 30 minutes until i just gave up and pressed ^C. the resulting iso file was much larger than the source disc. try dd if=/dev/rcd0c

Re: dd problem

thanks everybody. 1. how do i determine the corect block size for a device? 2. is the fact that dd does not work without any bs parameter a bug and should be reported? thanks konstantin try dd if=/dev/rcd0c of=disk.iso bs=32k note the rcd0c instead of cd0a. The 'a' vs. 'c' doesn't (seem

Re: dd problem

1) stat(2), the st_blksize field in the stat struct 2) no, because it's the device, not dd, that's not letting it work. CD-ROMS only want to output 2K of data at a time, so if you request less than that, they just won't do it. Generally though, most devices will output less than st_blksize, but

dd problem

hello, i wanted to create an ISO image of a CDROM, so i ran this command: dd if=/dev/cd0a of=my.iso and i waited and waited for about 30 minutes until i just gave up and pressed ^C. the resulting iso file was much larger than the source disc. i guess if i give dd the correct count parameter