Windows 7: I need help knowing which partitons I can delete to make a new one.

So I have a problem and can't make a new partition with an Unallocated one. Since I do not have room for another partition I want to know which I can delete to create a new one. The reason I want a new one is to run another OS on my computer without interfering with Windows 7.

If you can see the photo I attached those are my partitions and I want to make the 429.38GB into free space but like I said I can't due to having the full amount of partitions.
So if you can tell me what to do it'll be helpful, and if you don't understand me I'll provide further information.

I'm assuming that at this point you have only 1 operating system, Windows 7. It needs C and the 102 MB partition to run.

If that is true, you need to keep the small OEM partition on the far left, Recovery, and C.

The 2.50 GB unallocated space is not a partition.

The 5.90 GB partition appears to be completely empty and unneeded.

The 326 MB space outlined in green appears to be pointless.

The large 429 GB space on the far right is not a partition. It's just unallocated space.

I'd download Partition Wizard bootable disk from the bottom choice at this link. Burn it to a disk.

Free download Magic Partition Manager Software, partition magic alternative, free partition magic, partition magic Windows 7 and server partition software - Partition Wizard Online

It will allow you to delete partitions, move them around, partition as necessary, etc. It should be all you need.

AVOID dynamic partitions if they are ever offered to you.

I'd use Partition Wizard to try to end up with these 3 partitions, from left to right: 102 MB partition, Recovery partition, and C.

To the right of C you would want one big chunk of "unallocated space". When you get to that point, reconsider your plans and post a new picture. You might then want to go to a logical partition.

But, unless they have something on them you need, get rid of: 2.50 GB partition, 5.90 GB partition, and the 326 MB free space in green. That will generate a bunch more "unallocated space". Add that to the 429 GB of unallocated space you now have.

Thanks it worked just need help with the OS now which doesn't have anything to do with this forum.