Detect your USB hard drive easily on your computer.
A USB hard drive is a portable hardware memory unit capable of storing information for easier transfer between computer systems. In a rare instance, sometimes a computer will not be able to detect a USB hard drive when connected to a computer. This is primarily due to Windows XP's registry files, which must be deleted in order for the system to identify any external peripherals.
Instructions
1. Click on "Start", then "Run", and type in the word "regedit" in the search box. Then click "OK."
2. Click on "HKEY_LOCAL_MACHINE," then "SYSTEM" and "CurrentControlSet." Continue to navigate through the registry folders by clicking on "Class", then finally into "{4D36E967-E325-11CE-BFC1-08002BE10318}." You will find the registry value called "UpperFilters", which you must click to highlight.
3. Go to the "Edit" menu and click "Delete" to remove the registry value called "UpperFilters," then press "OK."
4. Click on "LowerFilters", located in the same registry folder as "UpperFilters." Then repeat the third step to remove this registry value from the system.
5. Exit the "Registry Editor", then restart your computer.
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