I bought recently a new computer; A Lenovo G50-70 and found that Windows 8 64bits was installed on it. I'm trying actually to remove Windows and replace it by Ubuntu 14.04.3 LTS 64 bits. After creating a USB Live containing this version of Ubuntu, I booted through Legacy mode and tried Ubuntu so that I can access Gparted.
When I reached gparted, I found three ntfs partitions flagged respectively msftdata, msftdata and diag, one unknown partition flagged msftres and a fat32 partition flagged boot.
My aim is to remove them all and create an extended partition that will allow me to set up Ubuntu. However, when I removed the partitions in gparted and tried to create an extended partition I couldn't do so; Gparted was only allowing me to create a primary partition (Logical and Extended were grayed out and thus not selectable).
By the way, I found a small warning in the "partition" column near to Unknown and ntfs partitions. On the information window, it says that it isn't able to read the contents of the file system. "Because of this some operations may be unavailable. The cause might be a missing software package. The following list of software packages is required for ntfs file system support : ntfsprogs/ntfs-3g." Is this related to my inability to create an extended partition ?