MacOS dd: invalid number: ‘1m’

The following causes an issue on a fresh MAC running Mojave v10.14.6

Line 146 in aa8107c

bs_size=1m

I fixed this locally by just making it as follows:

    bs_size=1M

@StefanScherer happy to raise a PR to fix this? Also the latest v2.7.0 did not work on my Mac at all. I'll look into that next, as I downgraded back to v2.6.0.

The following was the issue on v2.7.0 with MacOS

Is /dev/disk2 correct? y
Unmounting /dev/disk2 ...
Unmount of disk2 failed: at least one volume could not be unmounted
Unmount was dissented by PID 24954
Unmount of disk2 failed: at least one volume could not be unmounted
Unmount was dissented by PID 2495

Thanks @xunholy for the report.
Can you give me a little more detail about your machine?
What does

which dd
ls -l $(which dd)

show you?

For me it's

$ which dd
/bin/dd
$ ls -l $(which dd)
-rwxr-xr-x  1 root  wheel  45120 Mar 17 16:42 /bin/dd

I am on macOS Catalina 10.15.4, but also had a machine with 10.14.x for a long time without a problem.

We had such reports from time to time, eg. #131 but it turned out that dd was not the original one.

Have this same issue. Mine points to the version brought in by coreutils from Homebrew.

/usr/local/opt/coreutils/libexec/gnubin/dd -> ../../bin/gdd

I "fixed" it by putting /bin at the beginning of my PATH again.

export PATH="/bin:$PATH"