Hi, the DVD images 1 to 3 in http://ftp.ports.debian.org/debian-ports-cd/hurd-i386/debian-hurd-2017/ are listed with sizes 1.6G, 1.7G, and 1.7G respectively. At least DVD-1 really has only 1,680,308,224 bytes (and is not truncated or rolled over). Is the small size intentional ?
A normal DVD has a capacity of 4482.625 MiB = 4.378 GiB. So most of the data would fit onto a single medium. Other Debian DVD-1 ISOs are a bit smaller than 4 GiB to fit on a "4 GB" USB stick. See for example https://cdimage.debian.org/debian-cd/current/amd64/iso-dvd/ Have a nice day :) Thomas