Win7 computer settings do not save the U disk usage record method

Specific methods are as follows:

a, which is added to the system environment variables devmgr_shownonpresent_devices, a value of 1;

Second, run the device manager, open to view hidden devices. Expand the disk drive and store the volume, and drop the Kill associated with the USB flash drive;

3. Open the computer management and delete the removable storage;

4. Add one System environment variables are deleted;

So far, it is possible that all the usb usage records in the registry cannot be deleted. There may still be usage records in HKEY_LOCAL_MACHINESYSTEMControlSet002EnumUSBSTOR, then open the powerful regedt32 tool to find the Item, modify permissions, and then delete the child. In addition, some of the HKEY_LOCAL_MACHINESYSTEMControlSet002EnumUSB related to the USB Storage Mass device should also be deleted.

V. Clear the U disk usage record of the registry;

1. Press Start-->Run, enter the command in the input box: regedit;

2. Delete after

HKEY_LOCAL_MACHINESYSTEMControlSet001EnumUSBSTOR

HKEY_LOCAL_MACHINESYSTEMControlSet002EnumUSBSTOR

HKEY_LOCAL_MACHINESYSTEMControlSet003EnumUSBSTOR

HKEY_LOCAL_MACHINESYSTEMCurrentControlSetEnumUSBSTOR

delete above USBSTOR child; the following registry subkey USBSTOR directory The general confidentiality inspection software cannot be checked.

If you need to completely clear the USB usage record, after completing the above operations, you can proceed to the following operation:

1. Delete all records except ROOT_HUB and ROOT_HUB20 under the following USB sub-items.

(1) HKEY_LOCAL_MACHINESYSTEMControlSet001EnumUSB

(2) HKEY_LOCAL_MACHINESYSTEMControlSet002EnumUSB

(3) HKEY_LOCAL_MACHINESYSTEMControlSet003EnumUSB

(4) HKEY_LOCAL_MACHINESYSTEMCurrentControlSetEnumUSB

Permission operation and above the same operation.

2, a5d under delete DeviceClasses ..., 53f ... and some other children usb containing the word.

HKEY_LOCAL_MACHINESYSTEMControlSet001ControlDeviceClasses {a5dcbf10-6530-11d2-901f-00c04fb951ed}

HKEY_LOCAL_MACHINESYSTEMControlSet002ControlDeviceClasses {a5dcbf10-6530-11d2-901f-00c04fb951ed}

HKEY_LOCAL_MACHINESYSTEMControlSet003ControlDeviceClasses {a5dcbf10-6530-11d2- 901f-00c04fb951ed}

HKEY_LOCAL_MACHINESYSTEMControlSet001ControlDeviceClasses {53f56307-b6bf-11d0-94f2-00a0c91efb8b} ## # USBSTOR # Disk &? Ven_Alcor & Prod_Flash_Disk & Rev_8.07 # 2624BFBB & 0 # {53f56307-b6bf-11d0-94f2 -00a0c91efb8b}

......

on the same step other operations.