Kappy's paste isn't going to work quite right in your case I believe because in order to change the four partitions you got to erase the whole drive, which you can't do while booted from the Lion Recovery Partition.
Only by booted from a outside media can you change that many partitions and set them up again.
I learned this while setting up 7 partitions on my spare MacBook Pro.
So this is what I would do in your case:
Have all your data completely off the machine right, nothing in any partition?
Don't use TimeMachine, it's unreliable, save your personal data on a storage drive(s) (check out my link)
Disconnect all other drives and media, we don't want a accident.
When you get that done your going to be holding c and booting off the 10.6 Snow Leopard disk.
Use Disk Utility to Erase and format the entire computers drive (select the far left "media") via the Partition tab.
You need to erase the whole mess, set 1 partition, GUID and OS X Extended and click Apply, I'm sure you know that.
Next your going to need to install Snow Leopard and update to 10.6.8 and walla, install Lion.
This time you hold down the Option Key and click on Purchases in AppStore, which you can download the Lion installer again.
But before you install it, save the dmg and make a bootable disk of Lion
http://eggfreckles.net/notes/burning-a-lion-boot-disc/
Install in this order for best performance
- OS X fully updated and upgraded
- All programs you use from fresh sources as much as possible
- Last, files from backup (as they rob a computer of performance and best at the end)
You can learn a lot here, you should be making a Lion USB Recovery USB as well
And another thing, for performance all you have to do is learn how to clone your OS X Lion Partition to a external drive, it's hold the option key bootable which then you can reverse clone back onto the Lion OS X Partition (not the whole drive now, so be careful) which will optimize and defrag it, while maintaing a copy safe on the external drive.
Remember Lion makes another invisible partition when it installs, the Lion Recovery Partition , which you hold command r keys to boot from it.
But because you had a quad partition setup, you need to erase the whole mess, set up your partitions again and reinstall Snow Leopard from the disk, then upgrade to Lion to fix it. Because your Lion Recovery Partition has to be deleted to reformat the partitions and that's the only way to download Lion.
So when you reinstall Lion on top of Snow, your Lion Recovery Partition gets re-established and then you can boot from it later on. 🙂
https://support.apple.com/kb/HT4718
https://support.apple.com/kb/dl1433
Read my post here, lots of into!
https://discussions.apple.com/messa