Win 7 system card reader drive sometimes does not see how to do?

1, I am xp-Windows7 dual system, the machine has a card reader, in the xp system "My Computer" interface is displayed as the card reader name and removable memory icons;

2, are not displayed in the "computer" screen Windows7 system, the "disk Manager" visible with these readers, is labeled "removable memory." After

3, in the "Folder Options" "View" you want to check "Show hidden files and drives" in the "computer" screen Windows7 system in the reader can see these.

ask:

1, in Windows7 system, these readers default to "hidden attribute" it?

2, how to modify this property? When

in Windows7, while only select the "Hide empty folders computer drive" and "Do not show hidden files, folders, or drives" these two options, and do not insert a memory card reader when the card reader drive letter will be hidden

If you want the reader letter, you can adjust any of the above options in the settings