If you ever install Windows after Linux and access the Linux partition in Windows, you more than likely my have caused an unaware problem with the Linux partition (DO NOT format disk if Windows can't read it). When you try to access your Linux drive again, either Linux will fix the problem itself or you would have to go into LiveCD.
In LiveCD, you might come across an error like this:
mount: wrong fs type, bad option, bad superblock on /dev/..
To fix this problem, open up terminal and use this:
Basically answer "yes" to fix all problems and your partition will be back again.
In LiveCD, you might come across an error like this:
mount: wrong fs type, bad option, bad superblock on /dev/..
To fix this problem, open up terminal and use this:
sudo fsck /dev/DEVICENAMEWITHPROBLEM
Basically answer "yes" to fix all problems and your partition will be back again.