Hi kronhamn,
I´ve talked to my colleagues and nobody ever heard of issues like the ones you are experiencing in connection with the GPIB-USB-HS. All of us assume that the problem is related to windows configurations. So here are some points that you can check on your system:
1. Go to Device Manager -> Universal Serial Bus Controller. There should be several entries named USB-Root-Hub. Double click each of them and uncheck the "Allow the computer to turn off this device to save power" option. This will disable XP SP2´s power management option which sometimes causes trouble with USB memory sticks.
2. The write protect option might prevent your memory sticks from being recognized.
Click Start/Run and enter "regedit". Then expand the path HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\StorageDevicePolicies and double-click on WriteProtect. Enter 0 to deactivate the write protection. Then restart your PC.
Note: In case the key StorageDevicePolicies does not exist, right-click on the Control key and select New/Key. Name it StorageDevicePolicies. Open this key and right-click on an empty spot in the right-hand side of the window. Select New/DWORD Value and name it WriteProtect. Enter 0 to deactivate the write protection.
3.Furthermore, It is possible that the drive letter for your USB-stick might already be taken. Click Start/Run and enter diskmgmt.msc. Right-click on your device and select Change Drive Letter and Paths. Hit Change and choose M (for instance) to be the new drive letter. After a restart the issue might be resolved.
4.Perhaps your drives are only hidden. Open the Registry path HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\ policies\Explorer and make sure that no NoDrives value exists (erase it, in case).
Hope this is helpful to you. Please let me know if you could resolve the issue.
Best regards,
David
