When looking for attached hard drives, USB flash drives or CD and DVD drives using Windows Explorer, you may notice that some drives are not seen in Windows Explorer or the drive may disappear after a short time or when Windows resumes from Sleep or Hibernation. This can be caused by any of the following:
- Your drive does not have a drive letter assigned to it in Disk Management
- The drive may be disabled or offline
- Your USB driver may be corrupted
- Corrupted registry keys may be causing issues with connecting toyour CD or DVD drive
|Disk Drives||USB flash drives||CD and DVD drives||hard drives|
|Method 1: Run the automated troubleshooter for your version of Windows||X||X||X|
|Method 2: Make sure that the drive has a drive letter assigned in Disk Management||X||X||X|
|Method 3: Make sure that the disk drive is Enabled||X||X|
|Method 4: Make sure that the drive is Online||X|
|Method 5: Your USB drive may be corrupted||X||X||X|
|Method 6: Corrupted registry keys may be causing issues with connecting to your CD or DVD drive||X|
To resolve the issue follow the steps in the methods listed below starting with method 1, if the steps in that method do not resolve the issue, continue to the next method:
Method 1: Run the automated troubleshooter for your version of Windows:
Method 2: Make sure that the drive has a drive letter assigned in Disk Management:
Method 3: Make sure that the disk drive is Enabled
Method 4: Make sure that the drive is Online
Method 5: Your USB drive may be corrupted
Method 6: Corrupted registry keys may be causing issues with connecting to your CD or DVD drive
Answers Forum Support:To see the discussion on this issue in the Answers forum, click the following link:
When an external drive was encrypted with BitLocker (on a Windows 7-based PC) the drive may not be visible when plugging it to another computer (Windows XP-based PC). There may be an expectation of getting a popup asking for the BitLocker encryption key but this does not happen.
This can be resolved by decrypting and disabling BitLocker while connected to the first Windows 7-based PC, the drive will then be visible as expected on the second PC.
This problem may occur if you have used the Roxio GoBack program on the hard disk. The problem occurs because Roxio GoBack modifies the master boot record (MBR) and changes the partition type on the hard disk. This can cause the drive to be inaccessible in Windows XP, even when the hard disk appears in Device Manager and in Disk Management console.
To resolve this problem, contact Symantec for the latest updates to GoBack.
Or you can work around this problem by using the following steps:
WARNING: If you are not sure that you can safely follow these steps, contact your hardware documentation or contact the manufacturer of the hard disk or the computer before you continue.
- Configure the hard disk as the primary master, and then restart the computer.
- Disable Roxio GoBack. To do so, follow these steps:
- Press SPACEBAR to view the GoBack boot menu.
- Press D to disable GoBack, press Y to confirm, and then press ENTER two times.
- Shut down the computer and then return the hard disk to its original configuration.
Article ID: 330140 - Last Review: Nov 28, 2012 - Revision: 1
Microsoft Windows XP Professional, Microsoft Windows XP Home Edition, Windows Vista Business, Windows Vista Enterprise, Windows Vista Home Basic, Windows Vista Home Premium, Windows Vista Starter, Windows Vista Ultimate, Windows 7 Enterprise, Windows 7 Home Basic, Windows 7 Home Premium, Windows 7 Professional, Windows 7 Starter, Windows 7 Ultimate