MacBook Pro 2011 Partition problem

Hi,

I wish I could show you pictures of my current situation but I am using Mac OS recovery help window.

I have SSD and HDD on my Mac (I removed CD-ROM). I tried installing windows on my computer via USB and using DiskUtility (I allocated some space for windows). Unfortunately, when I tried to delete everything and come back to my old one and only Mountain Lion I have a new problem. The current VolumeGroup has some free space partition that I cant do anything with it (tried erasing, partition, applying new changes. Nothing works). When I went to Terminal I got something like this:

GUID_partition_scheme 120.0 GB disk0 //my SSD
EFI 209.7MB disk0s1
Apple_CoreStorage 119.7GB disk0s2
Apple_Boot 134.2MB disk0s3

GUID_partition_scheme 320GB disk1 //my HDD
EFI 209.7MB disk1s1
Apple_CoreStorage 155.8GB disk1s2 //how come this one and disk3 are separated?
Apple_Boot 650MB disk1s3

then theres disk 2 with 1.3GB for MAX_OS_X Base System
and this weirdo:

Apple_HFS 269.6GB disk3

disk 3 should belong to disk 1. I have no idea why it got separated. I tried erasing it but it said it "Formatting is not supported by HFS hfs MAC OS Standard"

This is why in Disk Utility I see this:

VolGroup (275GB and its made of disk0s2 and disk1s2)
Macintosh HD (which is disk 3) 269GB.


My goal is to merge disk3 with disk1 so I can finally get back everything as it used to be and then make the fusion. Now I cant do anything. Seriously, where did the disk3 come from and why I cant get rid of it?

Help would be much appreciated.

Thanks for that. It helps to have a better look. So I have two volumes? The one main VolGroup. Whats the volume family?

Yes, everything is backed up. I cant wait to blow out everything here!

CoreStorage logical volume groups (1 found)
|
+-- Logical Volume Group A06CCEC6-6590-40A7-8902-2A97C07D6AF1
=========================================================
Name: VolGroup
Status: Online
Size: 275524624384 B (275.5 GB)
Free Space: 0 B (0 B)
|
+-< Physical Volume 0001826F-B784-45F0-AB71-1679F1BB6B8E
| ----------------------------------------------------
| Index: 0
| Disk: disk1s2
| Status: Online
| Size: 155834474496 B (155.8 GB)
|
+-< Physical Volume 2C8206C7-79C2-48BF-9BFF-48C79128AE6D
| ----------------------------------------------------
| Index: 1
| Disk: disk0s2
| Status: Online
| Size: 119690149888 B (119.7 GB)
|
+-> Logical Volume Family 3BB5E8DA-700E-40B5-9FE6-EBFD7A69E976
----------------------------------------------------------
Encryption Status: Unlocked
Encryption Type: None
Conversion Status: NoConversion
Conversion Direction: -none-
Has Encrypted Extents: No
Fully Secure: No
Passphrase Required: No
|
+-> Logical Volume FF65EE30-6B86-4F0D-AFD0-4A8EA0AE1D2E
---------------------------------------------------
Disk: disk3
Status: Online
Size (Total): 269560053760 B (269.6 GB)
Size (Converted): -none-
Revertible: No
LV Name: Macintosh HD
Volume Name: Macintosh HD
Content Hint: Apple_HFS


So I got rid of CoreStorage. Now when I enter diskutil list this is what I get:

#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *120.0 GB disk0
1: EFI 209.7 MB disk0s1
2: Apple_HFS Untitled 119.7 GB disk0s2
/dev/disk1
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *320.1 GB disk1
1: EFI 209.7 MB disk1s1
2: Apple_HFS Untitled 155.8 GB disk1s2
3: Apple_Boot Boot OS X 650.0 MB disk1s3
/dev/disk2
#: TYPE NAME SIZE IDENTIFIER
0: Apple_partition_scheme *1.3 GB disk2
1: Apple_partition_map 30.7 KB disk2s1
2: Apple_HFS Mac OS X Base System 1.3 GB disk2s2
/dev/disk4
#: TYPE NAME SIZE IDENTIFIER
0: untitled *524.3 KB disk4

So my problem is that disk1s2 should be ~320GB, not half of it.




So I deleted the coreStorage, tried deleting partitions from terminal again (didnt work). Then I restored my old OS (which was still Lion), stick USB and installed RecoveryDiskAssistant. Restarted computer while holding ALT/OPTION. Clicked on the recovery USB and from there went to diskutility where I could partition whatever I wanted and I finally could see both my drives.

Thanks Wieselboy for telling me about diskutil cs list because that showed me that I can deal with volumes (even though later I saw that terminal also listed coreStorage as an option).

Case closed.