I decided to install another instance of vista home. So I extended my recover D: drive and made it extended logical. then I restarted pc and boot from vista oem cd. I formatted new drive during installation and put vista on drive D:. everything went fine but when vista was installed my primary c: disk became d: and vice verse. but the worst think is my ex C: drive with all data and original Vista is all empty apart from boot, and bootmgr folders and bootsect.bak file. Any ideas why it happend and how to get it back? Any help is highly appreciated as I'm desperate to recover my 450GB of never backed up (stupid me) data. Thanks!