I recently installed Ubuntu 13.04 alongside Windows 8. I had 4 drives and now I can access only 2 drives.
How can I access the other 2 drives from Windows 8?
Well, in what you formated your Linux disks?
Default for Windows is only able to handle FAT and NTFS...do you mean the fact, that it may show the partition in Windows 8 partition manager? That is because it can see it, but not recognize the "ext" partition(s).
I found a "open source" software that can do it...not sure about Win 8, as it says only Windows 7 is supported, but it's worth a shot.