So if I understand I will need to put linux on all three drives.
Yes you need Linux on all three drives if you want to use (save files to etc...) Linux on all three drives. This is rarely the case and you should only need to put Linux on one drive... if you need more you can format the drives accordingly and Linux will automatically \'pick them up\' when you run the OS.
So now I am all confused. I can install Linux on a windows drive right, it will auto partition the drive to suit it. Because there are some things I have to do in windows, some of my genealogy stuff. I have to keep a Win os as well.
the 160 is open and the 30 is open for stuff. wanted to use the 160 as a storage drive.
Yes, you will partition the drive with part of the drive as a Linux drive and part of the drive as a Windows drive.
With that being said... in the most layman of terms, you will NOT be able to access any of your windows files and windows will not even see there is Linux on the system.
When you install Linux you will install a Boot Loader (use GRUB). It will give you a choice to which operating system you want to boot to (Linux/Windows).
I would NOT put Linux on all three of your drives for now. I would put Linux on part of your drive that has windows on it and go from there.
Remember when partitioning... you want a Linux (2 or 3) partition and a SWAP partition that is to be no larger than 128MB.
The Linux partition can be any size over I\'d recommend 4GB... you can make it as large or as small as you want. I use 40GB for Linux and 250GB for Windows on a 300GB drive.