error formatting bootcd-66526-dbg -VM VirtualBox disk section of the primary (main), active NTFS

disk prepared Akronis11

disk section of the primary (main), active NTFS - error formatting, ReactOS not installed
After that - disk in Windows does not open, no file system. But after restarting ReaktOS shows as the same C: * NTFS amount MB

In these cases there is no error:
disk section of the primary (main), NTFS - formatting, ReactOS installed - no error
disk section of the primary (main), active FAT 32 - formatting, ReactOS installed - no error
disk section of the primary (main), FAT 32 - formatting, ReactOS installed - no error