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试了两种方法，
1。修改Max Cached Icons
http://www.open-open.com/lib/view/open1414396787325.html
2。修改图标排序
http://jingyan.baidu.com/article/359911f552827957fe0306f8.html
都不起作用，使用这个，保存为reg文件，运行即可
Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\ShellIconOverlayIdentifiers] [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\ShellIconOverlayIdentifiers\1TortoiseNormal] @="{C5994560-53D9-4125-87C9-F193FC689CB2}" [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\ShellIconOverlayIdentifiers\2TortoiseModified] @="{C5994561-53D9-4125-87C9-F193FC689CB2}" [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\ShellIconOverlayIdentifiers\3TortoiseConflict] @="{C5994562-53D9-4125-87C9-F193FC689CB2}" [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\ShellIconOverlayIdentifiers\4TortoiseLocked] @="{C5994563-53D9-4125-87C9-F193FC689CB2}" [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\ShellIconOverlayIdentifiers\5TortoiseReadOnly] @="{C5994564-53D9-4125-87C9-F193FC689CB2}" [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\ShellIconOverlayIdentifiers\6TortoiseDeleted] @="{C5994565-53D9-4125-87C9-F193FC689CB2}" [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\ShellIconOverlayIdentifiers\7TortoiseAdded] @="{C5994566-53D9-4125-87C9-F193FC689CB2}" [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\ShellIconOverlayIdentifiers\8TortoiseIgnored] @="{C5994567-53D9-4125-87C9-F193FC689CB2}" [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\ShellIconOverlayIdentifiers\9TortoiseUnversioned] @="{C5994568-53D9-4125-87C9-F193FC689CB2}" [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\ShellIconOverlayIdentifiers\Offline Files] @="{750fdf0e-2a26-11d1-a3ea-080036587f03}"
原文链接http://blog.csdn.net/boli1020/article/details/18614517
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原文地址：http://www.cnblogs.com/shenfengok/p/4345056.html
