Different Problem installing ubuntu 14.04

Question

Hello everyone i have a lot of trouble installing ubuntu to my windows 8 pc which is lenovo-G50 series.

The problem is that at i tried install ubuntu alongside windows 8.But when i inserting my bootable USB the option is not available.It is displaying that "Ubuntu didn't recognize any operating system" and is asking for a full format,but i have windows 8 installed.Then after surfing the net for a long time them i understood that my windows 8 os is installed in a different way and also the partition is different.So the option to "install windows alongside them" is not available.

So then again tried to install ubuntu in a different way by partitioning my F drive to 50 gb and created a new free space.Again i inserted my both usb and also Ubuntu cd.But i found the option to "install windows alongside them" is not available is missing so i clicked the option "something else" to install ubuntu in the free space i created.But i could not find that free space too in that list.I can only see "/dev/sda".

Now i don't know what to do.Ubuntu is not detecting my os.**I tried to install ubuntu with and without partition, it is neither showing the option **"install windows alongside them" nor "My created free partition".I am not able to find answer for this problem.Please help me.

In my bios setting i can see that the usb boot is in legacy modes.

Answer 1

When you shrink your main volume (or partition it), try leaving the free space UN-formatted. in windows it should say something like "unallocated space". (you can do this using disk management in windows, just right click and hit delete volume on the free partition you want to use).

if that doesn't work, or if you had already done this, try the other way:

format the partition as an NTFS.