come inenter linux single user mode to edit if u r using LILO as boot loader Press Ctrl+x to exit lilo graphic interface and type "linux single" follow "LILO" if u r using GRUB as boot loader choose the item u wanta boot and type "e" to edit. append "single" at the end of the line and then boot it single user mode doesn't require password.

To cowboy and other linux expertsLast night two fyp modify their program on the linux for many times and finally got an error of file jam. Then the linux cannot reboot any more. Fountunately, after several hours' effort, the linux can reboot. (1): But I found now, ethernet card is not recognized and driver modul is not loaded! (no result as follows Ethernet controller: Realtek Semiconductor Co., Ltd. rtl8139 11748 0 (autoclean) ) (2): use modprobe rt18139.o Can't locate module rt18139.o (3):Use dmes|more, I found: TCP: Hash tables configured (ehash 131072 bhash 65536) Initializing RT netlink socket Starting kswapd v 1.5 Detected PS/2 Mouse Port. (4):Some error message during the boot: Entering non-interactive startup Setting network parameters [ OK ] Bringing up interface lo [ OK ] Bringing up interface eth0 insmod: /lib/modules/2.2.14-5.0/net/rtl8139.o: init_m odule: Device or resource busy insmod: /lib/modules/2.2.14-5.0/net/rtl8139.o: insmod eth0 failed Delaying eth0 initialization. [FAILED] S