How to Manually Replace Files

If startup files are missing or become corrupted, Windows may not be able to boot successfully. Often, Windows will display an error message that shows the name of the missing file.

Startup Repair can automatically replace missing system files, but it may not detect corrupted files. However, you can manually replace files using the System Recovery command-line tool.

To replace files, follow these steps:

1. From another computer, copy the new files to removable media such as a CD-ROM or a USB flash drive. You cannot access Windows system files from the Windows DVD because they are stored within a Windows Imaging (WIM) file that is not accessible from within System Recovery.
2. Start System Recovery tools, as described in the section titled "How to Start the System Recovery Tools" earlier in this tutorial.
3. After the System Recovery tools start, click Command Prompt.
4. Your removable media will have a drive letter, just like a hard disk. System Recovery tools assign hard disk letters starting with C and then assign letters to removable media. To identify the drive letter of your removable media, run the following commands.
   C:\>diskpart
   DISKPART> list volume

   Volume ###	Ltr	Label	Fs	Type	Size	Status	Info
   Volume 0	C	Win 7	NTFS	Partition	63 GB	Healthy
   Volume 1	E	Windows XP	NTFS	Partition	91 GB	Healthy
   Volume 2	D		NTFS	Partition	69 GB	Healthy
   Volume 3	I			Removable	0 B	No Media
   Volume 4	H			Removable	0 B	No Media
   Volume 5	F	LR1CFRE_EN_	UDF	Partition	2584 MB	Healthy
   Volume 6	G	USBDRIVE	FAT	Partition	991 MB	Healthy

5. Use the Copy command to transfer files from your removable media to the computer's hard disk.