Downloaded the amd64 BETA1 ISO (873MB) and tried to burn a CD on Windows 10. It complained that the ISO is too big for my 700 MB CD-r. The bootonly iso (281MB) burns and runs ok. If I look in the list of ISOs, the other *disc1.isos are within the limits, so only amd64 is affected. NB: It is not a showstopper for me. I'm also happy if you just drop the amd64 disc1.iso for the release. ;-)
For stable/11, this was fixed in r303027. I'd like to keep this PR open, however, since it will still be a problem for 12.0-RELEASE, as the system continues to grow.
Allow re@ to track this.
This was fixed prior to BETA2.