Greetings, Warren Young! > I used 64k and 64M (capitalization is important to dd),
You aren't confusing DD with some other tool? $ dd if=/dev/urandom of=/dev/null bs=64K count=1 1+0 records in 1+0 records out 65536 bytes (66 kB, 64 KiB) copied, 0,0183668 s, 3,6 MB/s $ dd if=/dev/urandom of=/dev/null bs=64k count=1 1+0 records in 1+0 records out 65536 bytes (66 kB, 64 KiB) copied, 0,00557431 s, 11,8 MB/s $ dd if=/dev/urandom of=/dev/null bs=64kb count=1 dd: invalid number: ‘64kb’ $ dd if=/dev/urandom of=/dev/null bs=64kB count=1 1+0 records in 1+0 records out 64000 bytes (64 kB, 62 KiB) copied, 0,00562949 s, 11,4 MB/s $ dd if=/dev/urandom of=/dev/null bs=64KB count=1 1+0 records in 1+0 records out 64000 bytes (64 kB, 62 KiB) copied, 0,00685924 s, 9,3 MB/s $ dd --version dd (coreutils) 8.25 Packaged by Cygwin (8.25-3) -- With best regards, Andrey Repin Wednesday, June 22, 2016 02:08:29 Sorry for my terrible english...
