No PARTITIONs found while installing, dual-boot Win8/Ubuntu 14.04

Solution 1:

The solution is here

And the exact steps it took to get my partitions to be recognized again are as follows...

1. Open a Terminal and run sudo gdisk /dev/sda
2. It is likely that both MBR and GPT will be found and asks you which one to use - the choice is irrelavant.
3. Type x for the next command because well, you're doing expert stuff
4. Type z to zap the GPT data
5. Type y to proceed destroying GPT data
6. Type n in order to not lose MBR data

Opened GParted, no Warning message about GPT signatures and my partitions are recognized :)

Thanks all for your time and advice

Solution 2:

Did you try using TestDisk to check for partitions?

Another option would be to use the whole disk and then install Windows 8 in virtual box.