I have big problem with mount partition

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http://askubuntu.com – I have two hard disks (80 Giga ide and 500 Giga sata) and i installed Ubuntu 11.10 in hard disk 80 giga and give for him 20 gigabyte after that he saw all partition in two hard drivers until one I see it's health in gparted magic and and he can see it but can't check it and this photo the problem form partition sdb5 and I use this command to mount it from terminal and take me this although that this partition working very well in windows and Ubuntu could mount it before please give me any solution unless format or anything well delete my data because it's very important (HowTos)