修改注册表扫描码映射：将上箭头键替换为右Shift键失效求助

Hey there! I totally get how frustrating it is to keep hitting the up arrow instead of right Shift when you’re trying to type uppercase letters—let’s fix this scancode mapping issue together.

First off, the problem with your current registry command is that you’ve got the order of the source and target scancodes reversed. The ScancodeMap binary value follows a strict structure: each mapping entry is written as target scancode (the key function you want) followed by source scancode (the key you want to reassign) (both in little-endian byte order). Your original command was swapping these two, which meant you were actually making right Shift act like the up arrow instead of the other way around.

Correct Steps to Get This Working #

1. Run Command Prompt as Administrator
   You need admin privileges to modify the HKLM registry hive. Press the Windows key, search for "Command Prompt", right-click it, and select "Run as administrator".

2. Use the Fixed Registry Command
   Paste this exact command into the admin Command Prompt and hit Enter:

   reg add "HKLM\SYSTEM\CurrentControlSet\Control\Keyboard Layout" /v "Scancode Map" /t REG_BINARY /d 000000000000000002000000360048E000000000
   

   Let me break down what this binary string does:

   • 0000000000000000: Fixed header required for the scancode map
   • 02000000: Tells Windows we’re adding 1 mapping entry (plus a mandatory end marker)
   • 3600: Little-endian format of right Shift’s scancode (0x0036)
   • 48E0: Little-endian format of the up arrow’s scancode (0xE048)
   • 0000000000000000: Mandatory end marker to close the mapping list

3. Restart Your Computer
   Scancode map changes don’t take effect until you reboot. Save any open work first, then restart your PC.

If It Still Won’t Work #

• Check for Existing Mappings: If there’s already a ScancodeMap value in the registry, it might be conflicting. Open Registry Editor (regedit), navigate to HKLM\SYSTEM\CurrentControlSet\Control\Keyboard Layout, delete the existing ScancodeMap value, then re-run the command above.
• Verify Scancodes: Some keyboards use non-standard scancodes. If the fix above fails, you can use a free tool like KeyTweak to visually identify your keys’ scancodes and create the correct mapping without messing with registry commands manually.

备注：内容来源于stack exchange，提问作者Alex