I installed ubuntu from wubi installer on a windows 8 machine (without reading any info about the problem it creates). When I tried to reboot the system, only a black screen appears. Sometimes, it goes to the BIOS screen and then I tried to use my windows CD to boot. Now it gives me "error:unknown filesystem.
I just want to log into my system either windows or ubuntu. If I can save my existing data that will be great.
Thanks for help