Comment 8 for bug 1202021

"Yes, I use a SSD cache memory"
Windows and Linux do not use compatible cacheing. On a dual-boot computer, you have to disable the cacheing altogether. See for instance http://useranswer.com/answer/dual-boot-installation-of-ubuntu-12-04-lts-on-hp-ultrabook-envy-4-1002tx/ However this is a risky operation, do a full backup before trying.

"What should I do to be optimal?"
You should format your partitions for 4K sectors. As your primary and logical partitions start on a sector boundary, you need not repartition. On sda6 you have no data, so reformating is easy :

sudo mkntfs -f -L mis-doc -s4096 -c4096 /dev/sda6