Subject: bug#12626: Bug?: dd limited to <2G read size (2G-8K) on 64 bit machine?

From: Paul Eggert <[email-masked]>
Date: Thu, 11 Oct 2012 23:42:33 -0700

On 10/11/2012 11:39 PM, Linda Walsh wrote:
> I'm not even getting error messages if I try to do 4G @ a time

That's what dd is supposed to do.  It requests 4 GB,
the kernel gives it only 2 GB, so it goes with 2 GB.
dd has always worked that way, and POSIX requires it
to work that way.