I think you will be happy to know I have P-III machine loading modules without error from NTFS and ext4 partitions using live-boot-2 and 3

I can't say what is the problem yet (maybe hdd driver issue or similar). I will test boot with older kernel on the machine with ntfs-3g errors in the next days. Maybe some module in kernel 3.16 (or Jessie firmware) doesn't work well with some HDD type.
Edit: I guess the new way mount command works in combination with driver bug is the reason for this ntfs-3g error. Still downgrading mount deb seems the safe and universal solution for me but I like to test more to confirm.
Edit2: Do you know if porteus-boot has different module probe/load on boot compared to live-boot?
Toni