I seem that "fake RAID" term is not really corresponding to actual motherboard design. Indeed, I don't see the differences between Marvell RAID controller implanted into my motherboard and my old Silicon Image PCI SATA 4-port card.
However, Ubuntu 14.04 cannot be installed "by default" in both cases. Follow these step-by-step instructions.
I downloaded Lubuntu 14.04 because of lightweight desktop requirement but standard Ubuntu installer should not have differences. Personally, I like Ubunty Unity desktop but it use 300-400 Mb in addition of 150 Mb for LXDE.
- Configure your BIOS RAID using setup utility. Usually, you can specify RAID name, like "raid1" etc.
- Download ISO and create Lubuntu startup disk (1 Gb USB stick is sufficient).
- Boot from startup disk and select "Try ubuntu".
- Run Gparted, select your "xxx_raid1" and delete all partitions if they exists (all data will be lost so think about backup before).
- In Gparted, create new partition table (select GPT) and at least 3 partition:
- reserved bios area (about 128 Mb, flag it with "bios_grub");
- swap area according to your RAM size;
- all remaining space for system and data.
- "use as reserved bios area" for first partition;
- "swap area" for second partition;
- "use as ext4", map to "/" and format partition for last one;
- select your "xxx_raid1" as device for boot loader installation.
Now, it should boot up from disks.
In case of troubles, boot from startup disk again and use boot-repair utility in recommended mode.