Why when I Try to create a folder whith name = nul i get the following message:

the specified device name is invalid

  • Know limit from backward DOS compatability. Same for folders such as con, lpt, ... – Hennes Apr 2 '18 at 13:26
  • can you explain more please – M.A.Bell Apr 2 '18 at 13:27
  • Linked to the post answering it for CON, PRN, AUX, NUL, COM1, COM2, COM3, COM4, COM5, COM6, COM7, COM8, COM9, LPT1, LPT2, LPT3, LPT4, LPT5, LPT6, LPT7, LPT8, LPT9. Summary: these keywords are used by Windows internally and are reserved Keywords. – Hennes Apr 2 '18 at 13:28
  • So those name are used by windows so if I use one of them a confict will occure ??? – M.A.Bell Apr 2 '18 at 13:31
  • Correct. They were used in DOS, were used in DOS with the windows shell (sio windows 2, 3, 95, ..) and are still used/reserved in a modern setup. – Hennes Apr 2 '18 at 13:32

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