After a few hours i an found an ultimate solution:
(done under ubuntu 9.10 livecd)
1. Install testdisk from repo (sudo apt-get install testdisk)
2. Run testdisk from console (sudo testdisk)
3. select:
"no log"
(choose your drive) and "proceed"
"intel"
"analyse"
"quick search" (if found not enough try "deeper search")
press Y if you have Vista/Win7 or N otherwise
"write"
4. It will write the correct partition table
5. (you dont need to restart) run gparted or ubuntu installer
6. now all partitions are visible!
After a few hours i an found an ultimate solution:
(done under ubuntu 9.10 livecd)
1. Install testdisk from repo (sudo apt-get install testdisk)
2. Run testdisk from console (sudo testdisk)
3. select:
"no log"
(choose your drive) and "proceed"
"intel"
"analyse"
"quick search" (if found not enough try "deeper search")
press Y if you have Vista/Win7 or N otherwise
"write"
4. It will write the correct partition table
5. (you dont need to restart) run gparted or ubuntu installer
6. now all partitions are visible!