Hi Jack, > It seems that my version of dd from coreutils-8.31 does not seem to work > correctly when using units with the bs option (e.g. bs=1M). In the terminal > session below, I first use bs=1M. The output looks okay: dd appears to have > copied the whole 2.3GiB file, but it has done so impossibly quickly. It turns > out that went so quickly because the whole file has not been copied. If > instead of using the units modifier, I specify the same number of bytes > directly, everything seems to work as expected (notice the slower speed).
Does this[1] help? [1]: https://superuser.com/questions/730801/dd-immidiately-completes-but-actually-needs-sync
