Windows 7 Pro Backup cannot see my external USB hard-drive.

This seems to be an old problem, perhaps someone has now found a solution:

I have a Toshiba 150GB NTFS external USB 2.0 hard drive I used as backup when I had XP, but now I have W7 Pro 64-bit (SP1), and the Backup programme cannot see the drive.

It shows in Explorer, it's working fine, has write permission, but isn't in the Options list in Backup.

Drive is 18 months old. W7 found and installed the USB driver for it.

It's hard-wired, I do not have a network.

Also, Windows cannot format the drive.

I changed the drive letter from F that W7 named it, to Z,  no go.  All I see in Backup is the C drive and the DVD.

It's been suggested that I uninstall all the USB drivers and reboot and let Windows reload them, but I have a USB mouse and keyboard so if I do that there is no way to control the computer.

How can I make the external drive visible to the Backup programme? Any assistance much appreciated.


 I use Ghost on my 8 month old Toshiba Satellite L755 and never have seen a conflict.  I also have it on 3 desktop computers.  For antivirus I'm using the free AVG on 3 systems, Symantec SEP on one, and Norton Security Suite on the laptop (which I get free from Comcast).  The only security-related thing I see in Ghost 15 Start menu is a little window for giving people access to Ghost.  It also has a built in feature called Threatcon which I've never had any messages from.  Here's the info from the built in Help.


About Symantec ThreatCon

ThreatCon is Symantec's early warning security threat system. When Symantec identifies various threats, the ThreatCon team adjusts the threat level. This adjustment gives people and systems adequate warning to protect data and systems against attack.

When you enable the Symantec ThreatCon trigger for a selected backup job, Norton Ghost detects changes in the threat level. Your computer must be connected to the Internet at the time. If the ThreatCon level is either reached or exceeded, the backup job in which you enabled Symantec ThreatCon is started automatically. You then have a recovery point to use to recover your data should your computer become affected by the latest threat.


If your computer is not online, then it is not susceptible to online threats. But if you connect your computer to the Internet at any time, it becomes vulnerable. You do not have to enable or disable Symantec ThreatCon when you go on or offline. It works if you are online, but does nothing if you are off line.

For more information about Symantec ThreatCon, visit


Good luck.

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Question Info

Last updated April 8, 2019 Views 1,124 Applies to: