It appears that your two previous swap logical partitions have gone into one. This may not be a fault as a swap is just a scratch area for temporary storage.

Youe have hide the sda2 successfully already.

Your sda2 is now a primary partition of type 82 which is recognised by the kernel. By hiding it the type number changed to 92 (the "1" is added to the second digit as expected) and not recognised by the Linux kernel.

The matter is therefore simplified now. You don't have to hide sda2 any more. Just use Gparted to shift the partitions around to chnage their size to your wish.

You PC should boot OK if you amend the Linux's fatab in sda to mount only sda2 (instead of sda5 and sda6 or sda5 and sda6).

I would now edit fstab to get the Linux in sda working first before changing its partitions sizes. If you have a problem then post the /etc/fstab and /boot/grub/menu.lst (/boot/grub/device.map also useful) of the Linux in sda here.