When installing ubuntu can not see windows

[qabsou]

Hello,
I installed virtual box in my windows 8, now I attempted to load ubuntu, the all thing starts up , but at panel with questions appears, In this panel
they want to reformat the all disk...there is nom option to keep my windows intact...how come?
//T

 

[skittle]

Because you are installing in virtualbox...

 

[stillblue]

When installing on vmware you created a virtual hard drive. You are fooling the system that you are installing into believing there is a hard drive all to itself even though the imaginary one (virtual) resides on a physical one. When the installer asks do you want to format the entire drive it is referring to the virtual one, go right ahead.