Po odebrání mého 2.5″ USB disku ve windows 7 se stále točí plotny a disk se neodpojí tak jako ve windows XP. Řešení je upravení registru :

Per-Device Setting

To apply the workaround for a specific device, add a REG_DWORD value namedDisableOnSoftRemove that has a value of 1 to the following registry subkey:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\usbflags\vvvvpppprrrr
(where vvvv is the device’s Vendor ID, pppp is the device’s Product ID, and rrrr is the device’s Revision number).

1. Click Start, click Run, type regedit in the Open box, and then click OK .
2. Locate and then click the following subkey in the registry: 
   HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\UsbFlags
3. On the Edit menu, point to New, and then click Key.
4. Type the name of the new key in the following form:
   vvvvpppprrrr
   where vvvv is a 4-digit hexadecimal number that identifies the vendor (idDevice from the USB Device Descriptor),
   pppp is a 4-digit hexadecimal number that identifies the product (idVendor from the USB Device Descriptor), and 
   rrrr is a 4-digit binary-coded decimal number that contains the revision number of the device (bcdDevice from the USB Device Descriptor).
5. On the Edit menu, point to New, and then click DWORD (32-bit) Value.
6. Type DisableOnSoftRemove for the name of the DWORD Value, and then press ENTER.
7. Right-click DisableOnSoftRemove, and then click Modify.
8. In the Value data box, type 1 , and then click OK.
9. Exit Registry Editor.

Global Setting

To apply the workaround globally for all enumerated USB devices, add a REG_DWORD value named DisableOnSoftRemove that has a value of 1 to the following registry subkey:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\usbhub\HubG

1. Click Start, click Run, type regedit in the Open box, and then click OK .
2. Locate and then click the following subkey in the registry: 
   HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\usbhub
3. On the Edit menu, point to New, and then click Key.
4. Type HubG for the name of the new key, and then press ENTER.
5. On the Edit menu, point to New, and then click DWORD (32-bit) Value.
6. Type DisableOnSoftRemove for the name of the DWORD Value, and then press ENTER.
7. Right-click DisableOnSoftRemove, and then click Modify.
8. In the Value data box, type 1 , and then click OK.
9. Exit Registry Editor.