I did a lot a research to check if my question was already answered or not, but so far I've only seen two related questions in Can I install Ubuntu on a separate SSD, AFTER having encrypted my Windows 8 drive using Truecrypt, without messing up the bootloader? and Dual Boot Windows 8.1 and Ubuntu 13.10 on 2 Separate SSDs.
In the first case I have no encryption issue, and in the second case, the RAID configuration is not relevant in my case. So I'd like to check if the solution are correct un my case.
Anyway : I recently bought a new desktop (no manufacturer, just built from parts) for working purpose, I already have 1 SSD + 1 HDD with windows 8.1 on SSD and data on HDD. I would like to install a fresh ubuntu on a brand new SSD (MX100 256G). I want to use the full SSD for linux system + data and if possible be occasionally be able to access data on the data HDD.
I already tried to do this a while ago with an HDD instead of the SSD, so I connected the HDD, launched ubuntu installer from live usb, an even though I asked the installer not to mess with the current UEFI, I actually did, and moreover the ubuntu install was extremely slow for some reason I don't understand. So I removed the hdd, and restored my windows system.
How can I achieve this properly ? Last time I installed linux distribution (long time ago), there were no UEFI, so I have no clue about how this works. From what I read, I think the most "quick and dirty" way would be to unplug the current drives, plug the new SSD, install ubuntu, then plug the other 2 and change the boot order. But after that, can I install a boot loader to choose the system I want to boot without entering the bios, or will this mess up my windows installation ?
I'm aware that a lot of these questions have been already answered, but since I can't find an exact match, I'd just like to check if the different parts I read fit together correctly or not. Thanks
EDIT : According to the comments, I'm not completely clear about what I want. I'm not looking for a tutorial on how to install ubuntu, but rather an answer about how to manage UEFI partitions and bootloader in order to get 2 SSD with 2 different operating systems to work properly. As I said, my first try failed.