I have a Thinkpad S431 with Windows 8. It has a 128gb SSD, and My partitions are WINRE_DRV, Windows8_OS, Lenovo_Recovery, 7gb Hibernation Partition. I also have allocated 20gb for Ubuntu.
When I tried to install Ubuntu, it told me that I have too many OS's on the machine, and the new partition I created is labeled "unusable".
What can I do?
Edit: Volume type is MBR.
I have deleted an unnecessary windows 8 partition from Gparted in the Try Ubuntu option. From there I have also formatted the drive to be ext4 on /dev/sda4 Now the problem is that Ubuntu will not install as "root file system is not detected"
I used ext2 as the filesystem for Ubuntu, and mount as '/'. This solved my problems!