HELP - LOST Partitions - how to run testdisk PLEASE

[gabell]

Set up plop with 2 hard disks in machine.  Plop was installed on the first boot drive according to bios.
Windows 7 64 on HD1 with single partition.
Windows 7 32 on HD2, with 3 partitions.
Was ok, then tried to hide partitons by using the CLEAR method and have now lost access to all partitions on my HD2.
Read forum, which suggest running TESTDISK.   How do I run this, its not in the menu structure.  Also tried Plop Linux boot from usb, but TestDisk is not a known command.

PLEASE HELP>>>>>>>>>

[Elmar]

in the boot manager, what do you see in the menu setup/partitions/