I restored my windows server 2012r2 without backup of SYSVOL!
I recreated SYSVOL and now windows boots normally.
Steps:
- Restore image backup from UrBackup Restore CD;
- Boot from installation CD form you windows version (if your windows 10, boot from windows10 installation CD, if your windows 2012r2, boot from windows 2012r2 installation CD);
- Use restore option and run CMD for recreate SYSVOL
C:\Windows\system32> diskpart
DISKPART> lis vol
DISKPART> sel vol 1 (you volume)
DISKPART> shrink desired=100 (shrink C: 100Mb);
DISKPART> creat par prim (create partition);
DISKPART> format fs=ntfs
DISKPART> activ (make active);
DISKPART> assign letter M
DISKPART> exit
C:\Windows\system32>bcdboot C:\Windows (create SYSVOL files);
reboot PC;
More detail with screenshots here (but in Russian, but it have all commands at screenshots).