Date: Sun, 17 Jan 1999 13:52:15 -0600 From: "Thomas T. Veldhouse" <veldy@visi.com> To: "FreeBSD-Current" <freebsd-current@FreeBSD.ORG> Subject: /boot/loader and booting off of second IDE Message-ID: <000001be4252$e2562340$0264a8c0@rover.mn.mediaone.net>
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OK. I have tried to figure out how to boot off of my second IDE drive and I
am close, but I still haven't got it. I need to boot wd2s1a. Here is what
I have done.
Booting off of a floppy with the old boot blocks:
1:wd(2,a)/boot/loader
I get to the prompt and type:
set currdev=disk2s1a
set rootdev=disk2s1a
when I type show, I see loaddev=disk2s1a:, but there does not seem to be
any documentation on this. Anybody know if this is significant? Anyway, I
then do:
boot -rootdev
And the kernel proceeds to boot and it actually mounts the correct root
(wd2s1a). It shows the all the drives are clean and then it fails, stating
that it can't mount wd2s1a because the device is incompatible (or something
like that - I am running from memory, as I have blown my system with fdisk
(DOS) and am rebuilding) and then drops to a single user shell with /
mounted read-only. It seems to me that it is having a problem going from
root as a read-only filesystem to a read-write filesystem. I have tried
many combinations without success. If it mounts root, it always fails
during the remount (fstab). If I don't pass rootdev as an argument to the
kernel, it tries to mount wd1s1 and then it panics, obviously because there
is no [UFS] filesystem there.
Any ideas what else to try?
Tom Veldhouse
veldy@visi.com
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<DIV><SPAN class=620513819-17011999><FONT color=#000000 face=Arial
size=2>OK. I have tried to figure out how to boot off of my second IDE
drive and I am close, but I still haven't got it. I need to boot
wd2s1a. Here is what I have done.</FONT></SPAN></DIV>
<DIV><SPAN class=620513819-17011999><FONT color=#000000 face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=620513819-17011999><FONT color=#000000 face=Arial
size=2>Booting off of a floppy with the old boot blocks:</FONT></SPAN></DIV>
<DIV><SPAN class=620513819-17011999><FONT color=#000000 face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=620513819-17011999><FONT color=#000000 face=Arial
size=2> 1:wd(2,a)/boot/loader</FONT></SPAN></DIV>
<DIV><SPAN class=620513819-17011999><FONT color=#000000 face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=620513819-17011999><FONT color=#000000 face=Arial
size=2> I get to the prompt and type:</FONT></SPAN></DIV>
<DIV><SPAN class=620513819-17011999><FONT color=#000000 face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=620513819-17011999><FONT color=#000000 face=Arial
size=2> set currdev=disk2s1a</FONT></SPAN></DIV>
<DIV><SPAN class=620513819-17011999><FONT color=#000000 face=Arial
size=2> set rootdev=disk2s1a</FONT></SPAN></DIV>
<DIV><SPAN class=620513819-17011999><FONT color=#000000 face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=620513819-17011999><FONT color=#000000 face=Arial
size=2> when I type show, I see loaddev=disk2s1a:, but there
does not seem to be any documentation on this. Anybody know if this is
significant? Anyway, I then do:</FONT></SPAN></DIV>
<DIV><SPAN class=620513819-17011999><FONT color=#000000 face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=620513819-17011999><FONT color=#000000 face=Arial
size=2> boot -rootdev</FONT></SPAN></DIV>
<DIV><SPAN class=620513819-17011999><FONT color=#000000 face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=620513819-17011999><FONT color=#000000 face=Arial size=2>And
the kernel proceeds to boot and it actually mounts the correct root
(wd2s1a). It shows the all the drives are clean and then it fails, stating
that it can't mount wd2s1a because the device is incompatible (or something like
that - I am running from memory, as I have blown my system with fdisk (DOS) and
am rebuilding) and then drops to a single user shell with / mounted
read-only. It seems to me that it is having a problem going from root as a
read-only filesystem to a read-write filesystem. I have tried many
combinations without success. If it mounts root, it always fails during
the remount (fstab). If I don't pass rootdev as an argument to the kernel,
it tries to mount wd1s1 and then it panics, obviously because there is no [UFS]
filesystem there.</FONT></SPAN></DIV>
<DIV><SPAN class=620513819-17011999><FONT color=#000000 face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=620513819-17011999><FONT color=#000000 face=Arial size=2>Any
ideas what else to try?</FONT></SPAN></DIV>
<DIV><SPAN class=620513819-17011999><FONT color=#000000 face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=620513819-17011999><FONT color=#000000 face=Arial size=2>Tom
Veldhouse</FONT></SPAN></DIV>
<DIV><SPAN class=620513819-17011999><FONT color=#000000 face=Arial size=2><A
href="mailto:veldy@visi.com">veldy@visi.com</A></FONT></SPAN></DIV></BODY></HTML>
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