Installing ML: locked partition missing after I erased it!

Question

I was into a clean install idea on macpro
I made bootable 10.8 usb, then restart to cmd+r mode. I decided to erase my 1st partition before install ML. so I opened disk utility and tried to erase 1st partition. this partition was password protected, so It asked for password 1 time and then erased it, since then the partition is missing!!! I can not see it in disk utility. I restarted from bootable USB but still disk0s2 is missing and "Repair Disk Permissions" is also unavailable. also it is not available for my 2nd partition as well (After I unlock it )
before I had 2 partitions
1st is about 998 GB  Called Srvr01.HD01    ( currently missing!)
2nd is about 1 GB     Called Private           ( Thanks God it is still there!)
before installation, in disk utility left side, if was like this:
Disk
-- Srvr01.HD01
-- Private
now in disk utility it is like this:
Private
-- Private
Srvr01.HD01
But in Partition layout I can c both "Srvr01.HD01" and "Private" and all th options are gray and unavailable

Answer 1

It seems I Found te solution myself!:
http://osxdaily.com/2011/09/23/view-mount-hidden-partitions-in-mac-os-x/#comment -412195
Quit out of Disk Utility, and launch Terminal to type the following defaults write command:
defaults write com.apple.DiskUtility DUDebugMenuEnabled 1
Relaunch Disk Utility and look for “Debug” to appear alongside ‘Help’
Click on the new Debug menu and pull down and select “Show every partition” so that a checkmark appears next to it
Now the hidden partitions will displayed alongside mounted visible partitions, but they will appear grey rather than black
Right-click on the greyed out partition to mount and choose “Mount [Drive Name]“