How can "Primary Partition" be located in "Extended Partition"?

Solution 1:

You don't have primary partitions within your secondary partition. That is impossible.

Nor do you have the EFI partitioning scheme. That doesn't have MBR-style secondary partitions.

What you have is a bug in Microsoft's Disk Management tool, introduced in Windows NT 6.0 ("Vista") and still present in Windows NT 6.1. Although the partitions are secondary partitions, because they have a partition type code that Microsoft's Disk Management tool doesn't understand, it erroneously says "Primary Partition" and uses the colour for primary partitions.

Use a partition table reporting tool without this bug, and you'll soon see that the impossible is not happening on your computer. ☺

Further reading

• Dan Goodell (2009-06-25). Vista Bug - Misinterpretation of Logical Partitions. Inside the Dell PC Restore Partition.