Ubuntu 12.10 killed windows 8 bootloader and disk partition?

Question

Windows

Friends! Need advice urgently! Computer needed!
I created a flash drive with ubuntu 12.10 and restarted the computer, I decided to check whether it is loaded from the flash drive or not, it was necessary to check the performance of the flash drive.
Selected Try but do not install , ubuntu booted. I turned off the computer, removed the flash drive, but it does not boot!
I stuck a USB flash drive with Windows, I can not restore it. began to understand - diskpart disk 0 is not GPT !!! And he was, strangely I think, how so, he said not to install ubuntu, why she erased the markup incomprehensibly ...
What to do in such a situation?
We urgently need your help!
PS see my comment below.

Answer 1

So have you tried it?

bootsect /nt60 SYS /mbr
bootrec /fixmbr
bootrec /fixboot

Answer 2

When playing with such things, they usually use the method of disconnecting the combat hard drive and connecting the test one, otherwise you never know ...

Answer 3

Boot from the live seat and restore the bootloader, check the disk with a checkdisk.

Answer 4

Okay, thanks for the quick replies! Restoring the GPT partition did not help, there are no partitions on the disk ... I am restoring from an old backup, but at least something.
If anyone can understand why this happened and explain how to solve this, I will be grateful, what if it happens in the future?
In general, I blame the Windows program for creating a disk with ubuntu, but who knows what it was (

Answer 5

You can boot from the Windows 8 installation disk. And select the recovery menu, there is a utility for finding lost partitions on your hard drive. I myself recently restored a deleted partition on a screw in this way, installed Linux Mint and mistakenly chose to erase everything. Linux mint naturally erased the partition table and created his own. :) But everything worked out. :)