On Fri, May 23, 2008 at 01:22:55PM +1200, Mark Kirkwood wrote: > James Seward wrote: > >Hello, > > > >Two days ago I csup'd my desktop at home, which was running RELENG_7 > >from about 7.0-RELEASE time, to bring it up-to-date (still on > >RELENG_7). I followed my usual buildkernel/world procedure (the usual > >one) which has worked fine all the way since 5.x. After installing > >kernel and restarting in single user, it was working fine. However, > >following installworld it will not boot. > > > >It stops immediately after "BTX loader 1.00 BTX version 1.02", but > >with the cursor on the line *above* the first "B". Nothing futher > >happens, but the system responds to Ctrl-Alt-Del. > > > >I have managed to start it using the install CD and csup'd back to a > >version just before the commit to BTX that moved it to 1.02 (March > >18th, I think). However, that version too hangs after "BTX loader 1.00 > >BTX version 1.01". > > > >My desktop is currently building RELENG_7_0 to see if that will work, > >but I won't know that until later as I'm at work and it is at home :) > > > >The install CD (BTX 1.00/1.01) boots fine. Nothing else changed on my > >system between the last successful boot and the unsuccessful one. > > > >Any suggestions/advice for what I can try next, or what I can do to > >help the troubleshooting process? > > > >My desktop is an Athlon64 but I am using i386, on an Asus A8V-E Deluxe > >board. > > > FWIW - I am seeing this too, on a Supermicro P3TDDE. 7-STABLE src from > 28-Feb is fine, but Mar, Apr, May code all hangs after printing "loading > /boot/defaults/loader.conf" - presumably reading my /boot/loader.conf? > > Interestingly I can usually get it to boot by escaping to the loader > prompt and then just pressing return. > > Oddly some other machines (Supermicro P3TDER and Asus PRO31J Laptop) > behave normally with src from Mar->May. > > In all cases the canonical procedure from UPDATING was used (buildworld, > kernel, reboot single, mergemaster -p, installworld, delete-old, > mergemaster, reboot). > > I happy to help collect some debug info (how do you switch this on for > the loader?), tho the machine exhibiting the problem is my workstation > (of course)!
Try to install new bootblock.
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