C:Issue
Sometimes it is required to save a document or file in local c drive (actually in Flash) in
9000 terminals. There are certain local security policies set for the “User” user in XPE.
This prevents a normal user other than Administrator to access local drive. Hence if you
use any USB Hard drive/SD card reader you can’t view the contents.
_
Solution//Workaround
Since poledit utility is not available in XP Embedded OS we need to change a few
registry settings to accomplish this. The steps are described below: -
1. Login to Winterm as administrator.
2. Disable “Write Filter” so that the changes made stays after reboot.
3. Login again as administrator, browse to “C:\Documents and
Settings\User\Desktop” and create a shortcut for c:\windows\regedit.exe.
4. Login as User and run Registry Editor to change the value of following entries to
0:
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Non
Enum\20D04FE0-3AEA-1069-A2D8-08002B30309D
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Exp
lorer\NoDrives
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Exp
lorer\NoViewOnDrive
5. Reboot the terminal and you get your familiar “My Computer” in user’s desktop.
This will show content of all the drives and you can save files in there.
Explanation
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\E
xplorer
NoDrives=REG_DWORD
The low order (right most) bit is for drive A: while the 26th bit is for Drive Z:
To hide a drive, turn on its' bit. These drives will still appear in File Manager. These
decimal number are to hide the drive(s):
A: 1, B: 2, C: 4, D: 8, E: 16, F: 32, G: 64, H: 128, I: 256, J: 512, K: 1024, L: 2048, M:
4096, N: 8192, O: 16384, P: 32768, Q: 65536, R: 131072, S: 262144, T: 524288, U:
1048576, V: 2097152, W: 4194304, X: 8388608, Y: 16777216, Z: 33554432, ALL:
67108863
The default value in XPE is 4 meaning no access to C drive.
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\N
onEnum
20D04FE0-3AEA-1069-A2D8-08002B30309D= REG_DWORD
This registry, if set to 1 which is the default value, removes the My Computer item from
the Start Menu and the corresponding checkbox from the Start menu customization CPL.
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\E
xplorer
NoViewOnDrive=REG_DWORD
This registry is same as NoDrives key described above. The default value is 4 which deny
view access on C drive. Hence without setting it as 0 we can’t view the contents of any
drive despite the icon “My Computer” being present in desktop.
.