Problems booting 4.8R PicoBSD

Chuck T. freebsdfan at
Tue Jul 15 10:06:13 PDT 2003

When I tried that the kernel stopped trying to download /pxeroot/etc/fstab 
but it still hung.  I also verified that I do have /dev/md0* device nodes.

The way I read the md driver code vfs.root.mountfrom should be set by by the 
md driver during initialization.  In my case that doesn't appear to be 
happening in my case since my debug printfs were never printed.

My 4.6R based project didn't have /dev/md0* devices, but it didn't seem to 

>From: Bob Bishop <rb at>
>To: "Chuck T." <freebsdfan at>, freebsd-small at
>Subject: Re: Problems booting 4.8R PicoBSD
>Date: Tue, 15 Jul 2003 17:46:36 +0100
>At 16:23 15/7/03, Chuck T. wrote:
>>[...]My 4.8R based kernel is booting via PXE using dhcp/tftp/nfs, but 
>>hanging after
>>decompressing the kernel.  A packet sniffer shows that it was trying to
>>read /pxeroot/etc/fstab.gz and failing that /pxeroot/etc/fstab.  I believe
>>that means that the kernel didn't find the embedded root file system image
>>for some reason. [etc]
>Do you have a <wherever_you're_booting_from>/boot/loader.rc? pxeboot 
>expects that, see pxeboot(8). It may need to contain:
>         set vfs.root.mountfrom="ufs:/dev/md0c"
>or some such. Sorry for the vagueness, I don't have a netbooting pico setup 
>here right now.
>Bob Bishop		    +44 (0)118 977 4017
>rb at		fax +44 (0)118 989 4254

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