I know that there are a ton of questions relating to that subject, but after reading a lot of them, I believe that I have another problem.
First, let me tell you my story :)
I have an ASUS laptop that originally had Windows 8 on it. I wanted to have a Ubuntu/Windows 8 dual boot and I even achieved that for a little while. Unfortunately I thought I had destroyed Ubuntu and so I reinstalled Ubuntu, hoping that it would just reinstall Ubuntu and leave the other stuff alone. How wrong I was :)
At the moment I just have Ubuntu and it works fine except for the fact that watching videos on youtube or netflix is a real pain. I searched the Internet for countless hours and even started a thread on this board about that, but nothing helped. That's why I want to have a Windows 7 partition.
I made a Ubuntu 14.10 live CD and opened gparted, but I can't resize the partition! I have three partitions:
/dev/sda1 fat32 /boot/efi 512 MB
/dev/sda2 ext2 /boot 244MB
/dev/sda3 lvm2 pv ubuntu-vg 697,9 GB
I could resize the first two partitions, but the gain is obviously not worth mentioning. The only partition that makes sense to resize is sda3, but when I try that, it tells me that the minimum and maximum size are the same, so I can't do anything there. It's funny, because when I use the Disk Usage Analyzer, it tells me that only 23 GB of the 729,1 GB are used. Is there any way to get a new partition with some 100 GB for Windows without breaking Ubuntu?
The only other way I would see, is to format that partition using gparted from the live CD, create two separate partitions (one of them NTFS), install Windows7 and then install Ubuntu again. But I hope that won't be necessary. Cheers