The History I was happily working with Ubuntu 10.04 untill I wanted to learn C with GUI I started with GTK2 (some basic) Until someone advice to start learning GTK3 but 10.04 its not possible (at least what I found on the net) So I though it was time to learn more linux and more to Slackware as Desktop and have Ubuntu as second one multi boot as I get up to speed in Slackware.

Now I try to do the same as I had before but just adding Slackware.

I have now available for this 750 GB

so I did last night the following:
1.1 G NTFS (primarry-boot)(This was a mistake it should have been F32 but it works as this)
52 G NTFS (Primary)(Windows Vista)
100 G (Primary) Ext4 Slackware
Extended: 560G
476 Gb Ext4 (/home directory )(The idea was this be mounting on Ubuntu but I did make a mistake and its /home into ubuntu partition I can still mount it ubuntu as separably drive)
4.1 GB Swap (I have 4 GB ram)
80 G ext4 (Ubuntu 12.04)
I have free 37 G which I was planning for new distro test and I want to have encrypted drive for important data.

I read that system with not more than 4 primary drive. Right?

Does partition have to be with the performance?

Thanks

Yes you only can have 4 primary partitions .
But you also can create secondary partitions .
You mean by performance reading from the HD ?
It start reading from the beginning of the HD
But do you notice it ?
That is a other question

Yes I mean reading and writing!
I dont know really it work fast but so it did with the other drive.

What is you suggested partition for those set of OS?