I installed Windows 8.1 Preview using the DVD yesterday after wiping off my HDD (I made a backup prior to that). While installing Windows I created only the partitions necessary to install Windows (System Reserved, C: shown in second screenshot). Further I installed Ubuntu 13.04. During Ubuntu installation I created necessary extended partitions (for OS, swap and home directory – all ext4 except swap). Later within Ubuntu I created a NTFS partition at the end (partition 4 in first screenshot). This was a primary partition. The objective behind this was that the partition must be accessible from Windows.
While Ubuntu disk utility reports the partitioning just fine (as below)
Windows disk management is showing all partitions as primary.
Thus within Windows I am able to access only C:! What puzzles me is one can't create so many primary partitions! How can I solve this issue?