Single user mode

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# 1  
Old 01-14-2002
Single user mode

Hi all,

Well back at work and back to crashing systems again :-)

Does anyone know where I can find some decent information on single user mode? I need to be able to fix a few things. Don't know if it's possible in single user mode but I need to fix the "etc/vfstab" mainly I re-wrote it to act like another machine and did a reboot and well, lets just say it didn't work (Though other words were said when it happen).

Or is there a way I can run a debug on bootup somehow to try and correct this problem? I'm not 100% sure what the problem is but it can't mount a heap of stuff so I'm saying it's the /etc/vfstab.

Thanks in advanced.

Mainly though I would perfer someone to tell me where I can get some decent information about single user mode as it would always come in handy when I crash it again (I know I'll crash it again sometime soon :-)
# 2  
Old 01-14-2002
try booting interactively...

boot -a

Hope this helps otherwise boot in single mode from CD ROM
# 3  
Old 01-15-2002
If your box is an HP-UX you can:

Reboot the machine. During boot, interrupt the process on the console by hitting space when prompted. Type 'boot' and when asked "Interact with ISL?" answer yes. At the ISL prompt enter "hpux -is". The machine will then boot into single user mode right to a command prompt. You can then change the root password and reboot to get the machine back into multi-user mode.

#boot pri isl
ISL>hpux -isl boot

And interact with the IPL ---> YES

If your Box is a SunSolaris then I think it is ctrl + A to interrupt.
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