dd command: BSD analog of conv=fsync?
Dan Nelson
dnelson at allantgroup.com
Sun Nov 18 14:51:53 UTC 2012
In the last episode (Nov 18), Thomas Mueller said:
> What is the (Free)BSD counterpart of conv=fsync in dd command?
>
> Command in question is
>
> dd if=GNOME-3.6.0.iso of=/dev/DRIVE bs=8M conv=fsync
>
> This is for writing to a USB stick, and of course DRIVE is replaced by the
> actual device node; also I believe bs=8M, good for Linux, would be bs=8m
> in FreeBSD.
>
> I don't really know if "conv=fsync" is necessary, but that's what was
> advised in the GNOME test-drive download page.
It isn't. Writing to raw devices in FreeBSD immediately writes to the
physical media. No flushing is needed.
--
Dan Nelson
dnelson at allantgroup.com
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