How to : Make your USB a Fixed Disk with Hitachi Microdrive Filter Driver

As discussed in a previous topic, Here is a filter driver which can be used for this purpose.

I – Install Hitachi Microdrive Filter Driver

  1. Download cfadisk.zip.
  2. Open Device manager (devmgmt.msc) and check for your USB drive in “Disk Drives”.
  3. Right click on the entry for your drive and select option to update driver.
  4. Don’t use Windows Update
  5. Browse my Computer for driver software – Locate and install driver software manually
  6. Let me pick from a list of device drivers on my computer
  7. Have disk
  8. Browse to location of downloaded cfadisk.inf
  9. Update the driver

Your USB Flash Drive will be immediately detected as a Fixed Disk and you can then partition or access your partitions on your USB Flash Drive.

II – Uninstall Hitachi Microdrive Filter Driver
Follow steps 1 to 7.Then select Disk drive and update.Your USB Flash Drive will recognized correctly as Removable Media.It will no longer be disguised as a Fixed Drive.
III – Features of Hitachi Microdrive Filter Driver

  • No Restart required.
  • Only Specific USB Flash Drive is disguised as a Fixed Drive. Other USB Flash Drives are still seen as Removable Media
  • Switching between Removable and Fixed modes can be done without restart by installing or uninstalling the filter driver
  • Tedious procedure for installation and uninstallation

VI – Video Tutorial for installing Hitachi Microdrive Filter Driver


V – Download


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