This is no complaint - I think Sabayon is the best distro and I always stick with it despite the recurrent install problems. I read recently a review of Sabayon that mentioned "but Sabayon has a reputation as difficult to install" (Or similar phrase).
The Anaconda install presentation is slick, but I wonder whether Anaconda puts off users from ever completing a Sabayon install. See below:
The biggest issue is that most users are installing on an existing system with at least one partition they wish to retain, most likely mounting it as "home".
In my experience this cannot be done: (1)With Text mode install - the complete disk /previous partitions must be formatted.
(2) In Graphical mode install, any data partition must be formatted.
During a recent install of Mate 13.04
- LiveCD default boot does not work because of video issues.
Safe Mode boots up, but on clicking the Install icon I obtain "No volume groups" and a freeze. Same result executing "liveinst" from a terminal.
Installation Option - works but I have no mouse. Keyboard only. The bootup stage of "Checking if ZFS tools present" takes an eternity. Most users would assume something was wrong and stop the install.
My machine is :uname -a Linux tower 3.8.0-sabayon #1 SMP Fri Mar 29 13:54:29 UTC 2013 x86_64 AMD Athlon(tm) 64 X2 Dual Core Processor 3800+ AuthenticAMD GNU/Linux
To cap all of this, after installing and hacking to get back my old home directory, updating sabayonlinux.org and sabayon-limbo repo software, everything was working fine. But on reboot the system fails early with "Intel powerclamp does not run on family 15 model 3. Recovery mode was impossible because it also gave the above error. (I realise this is probably a limbo issue and "acceptable")
The biggest issue is retaining data that most beginner users will not be able to solve.