When you have only one partition on the HD, it should be primary and never extended. So the problem.
How to solve this;
1- Backup your documents (photos, videos, etc)
2- Using LM LiveDVD, gparted, delete all partitions
3- Make 4 new partitions:
-sda1 Linuxmint files, 15GB ext4, /
-sda2 your files, 47GB, ext4, /home
-sda3 Linuxswap, 2 GB
-sda4, 10GB, ext4
sda4 is for test another distros.
Using LM13 MATE (Desktop), LM14 Cinnamon (Netbook)
HP Pavilion dv2-1110us, AMD Athlon Neo 64, 1.6 GHz, ATI Radeon Graphics 3400, Broadcom BCM4322 wireless card
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