This worked with my HP Pavilion Notebook dv9291ea and a CipherWave external USB drive that Vista kept asking for manuf's driver disk - with thanks to Seagate article (linked below):
Start by running Computer Management -> Device Manager:
If the drivers are not loaded properly: The drivers for the drive are included as part of Vista and normally load automatically, but occasionally the drivers will need to be loaded manually. To load the drivers manually:
1. Click the + box next to Other devices
2. Double-click the drive (usually listed as USB Mass Storage, but may be listed under another name).
3. A new Windows will open showing properties; click the Reinstall driver button.
4. This will open the update driver software wizard, click "Locate and install driver software (recommended)".
5. Then click "Browse my computer for driver software".
6. Click Browse.
7. Open the Windows folder on the C: drive (Computer > C: > Windows) and click OK.
8. Make sure the "Include subfolders" box is checked.
9. Click Next. This should load the drivers.
Be patient, after loading the first driver it asked for two more, so repeat 4-9 for each. Worked beautifully there after.
Here's the link to the full Seagate article that comes with pictures.
http://www.seagate.com/ww/v/index.js...00f5ee0a0aRCRD