Do you have the hardware that you can use for cloning disks, e.g. external USB case for the new disk?
One idea could be doing it (partly) manually! If it doesn’t work, you don’t have much to loose, only some time…
It could be done in several phases.
- Clone Windows with any reputable Windows cloning program.
- On Windows, make space on the new disk for Antergos partition(s)
- Use the Antergos USB installer stick, copy all Antergos files with cp or rsync, and make the new disk boot
The third step in more detail:
- Boot with the Antergos USB installer stick.
- Copying could be done simply with either cp or rsync programs. For example:
cp -a <source-directory> <target-directory>
- After copying, arch-chroot to the new Antergos root partition. Then, depending on your machine’s firmware type (UEFI or BIOS legacy), use grub-install and grub-mkconfig programs to make the new disk able to boot both Antergos and Windows.
You will need to edit /etc/fstab on the new disk because there are new UUIDs created during the process.
Disclaimer: please note that I haven’t cloned a multi-partition disk, so I have not tested this myself. However, I have copied files from an installed Linux partition to a new partition (and booting was handled by another installed Linux), and it has worked.
Anyway, an easier method probably is clonezilla, just as @BlaiseD suggested. And the links of @joekamprad provide much useful info.