//Moving failed due to different logical drives of source and destination. Let's copy:
id=open(szOldName,O_RDONLY);
if(id==-1) return 0;
od=open(szNewName,O_WRONLY|O_CREAT|O_TRUNC);
od=open(szNewName,O_WRONLY|O_CREAT|O_TRUNC,S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH);
if(od==-1) {
close(id);
return 0;
