Hello, all Sorry to trouble you. But I do hope to solve my problem quickly, since I have waste much much time on it yet. I am using the ENP2505 board. When I tried to setup it, I met the problems. After I run the .ixstart, it inside invoked create_enivronment.rc and boot_bv before the system enter embedded linux by my thought. Here, create_environment.rc has no any problems, because it is very simple. But, when boot_bv finished running here, I got the below information which was recored in the boot_bv.log. " [root@cordelia bin]# cat boot_bv.log eth1: unknow interface: No such device rmmod: module pciDgNet is not loaded rmmod: module pciDg is not loaded insmod: a module named bv already exists (null): unable to open device '/dev/bv' encountered system error 2: No such file or directory rmmod: module bv is not loaded [root@cordelia bin]# " " [root@cordelia bin]# cat boot_bv ./unload_pciDg ./load_bv ./bvloadapp ./unload_bv [root@cordelia bin]# " I thought my boot_bv should run inproperly, otherwise the system won't stop until a message appear after the cygmon prompt. " cygmon> .ixstart global time out " Do you think the problem is I install the enp driver incorrectly or something else? But I thought I have re-install the whole system more than 20 times. It' impossible I always make the same mistakens here. By the way, do you think my PC's pci does not compatible with this enp board? best, feng