Dear gentelmans, I'm working on a program which copy big files to our backup medias. When the copy is created sucesfully it truncate the file (make a sparse file - length 0). << this works fine. My problem description: When some user go to samba share which contains those big .exe sparse files with Windows Explorer, Windows Explorer try to read the icon of the file - and then fails. I noticed that on Win2000 and newer I can set an "offline" file attribute with a program writen in MS VC ('O' character in Windows Explorer details view under Attributes - is there a way to mark a file as "offline", so that windows client accesing samba share would see that the file is offline and will not try to read the icon data? Regards, Dezo