[9fans] I did bad things and 9front won't boot

["o@o5r.ca" <o@o5r.ca>]

Hello, 

I seem to have done incredibly stupid things to my 9front instance and now on boot I get "panic: unknown keyword in config block: <some character>", followed by a "mount: sys: write on closed pipe pc=0x2008c6" and "mount /srv/boot /root: mount 185: sys: write on closed pipe pc=0x2008c6”.

At this point I did try to drop into a shell, but I can’t figure out from there how I can mount my filesystem (that I can see in the list of things under /dev/sdE0/fsmain). 

By now I’ve also figured out that the panic is happening “here”, in the mergeconf function:
http://git.9front.org/plan9front/plan9front/858893ff8ff8d3abd06742276bcb794f3422bab8/sys/src/cmd/cwfs/config.c/f.html

Is there a way for me to rewrite the config block to sensible defaults by dropping into a shell and/or using a usb drive w/ 9front on it (as if doing an install) to just backstep whatever terrible thing I performed accidentally?

Thanks,

Olivier
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