Thanks for your attention. I read a lot of post, but i don't find a solution for my problem.
I do a big mistake.. i have vmware esxi 6.5 on my server.. i try some configuration with a copy of my VM.
After some test i decided to remove the copy of my VM... but i have 2 disk vmdk, 1 is a copy but the second is the original (yes, it's a test error), i delete the VM test, but the system delete the vmdk file of my original system.
There's a guide or... i don't know system to undelete this file.
Thanks a lot for your time.
Fabrizio.