Используйте bcdeditи передайте ему /storeаргумент, такой как bcdedit /store c:\Boot\BCDсписок записей.
Важно отметить, что BCD-файл может отсутствовать на диске C.
Вы можете использовать шаги, описанные в сообщении об ошибке, при запуске Windows 7: «В файле данных конфигурации загрузки Windows отсутствует необходимая информация», чтобы попытаться определить правильный раздел.
Воспроизведенные шаги:
Partition C: might not be the correct volume letter. Here is what we have to do to obtain the correct active partition: If the Bootrec.exe tool cannot locate any missing Windows installations, you must remove the BCD store, and then you must re-create it. Use the diskpart command to locate the volume letter for the system partition where the BCD store is located. To do this, follow these steps: At the command prompt type the following commands in the order which they are presented: c:\windows\system32> Diskpart DISKPART> select disk 0 DISKPART> list partition DISKPART> select partition 1 DISKPART> detail partition Sample output for example: Partition 1 Type : 07 Hidden: No Active: Yes Offset in Bytes: 1048576 Volume ### Ltr Label Fs Type Size Status Info ---------- --- ----------- ----- ---------- ------- --------- -------- * Volume 1 D System Rese NTFS Partition 100 MB Healthy System The BCD store is located on the partition where the detail shows “Active : Yes”, and Info is “System”. The partition may have a label “System Reserved”. In this example, Volume 1 is the system partition and Windows has temporarily assigned the volume letter D. If partition 1 is not marked Active, then select partition 2, and view the detail to see whether the next partition is Active and the Info is System. A partition with Info as “Boot”, is the partition where the \Windows directory is located. Partition 2 Type : 07 Hidden: No Active: No Offset in Bytes: 105906176 Volume ### Ltr Label Fs Type Size Status Info ---------- --- ----------- ----- ---------- ------- --------- -------- * Volume 2 C NTFS Partition 100 GB Healthy Boot On Windows Vista, one partition is typically used as both the System and Boot partitions and the \boot\BCD store is located on the same volume where the \Windows directory is located. On Windows 7, separate partitions are used for the System and Boot partitions to make it easier to enable BitLocker Drive Encryption and to support computers that have UEFI firmware.