If it's the kernel is the one you booted from, you can't delete it, the
file is still open.  To replace the kernel, rename netbsd to somethinge
else, put your new kernel in as /netbsd, then reboot.  When you
come back you can erase the old kernel.

Also, it's good to keep the old kernel around in case the new kernel
has a problem, you can boot the old kernel from the boot prompt.

On Thu, 26 Dec 1996, Yi-Chun Chu wrote:

> Hi:
> 
> I compiled a new kernel and put it in the root. When I tried to delete it,
> I got error messages.
> 
> /> ls -l netbsd
> -r-xr-xr-x  1 root  wheel  1064524 Dec 20 12:59 netbsd
> /> rm netbsd
> remove netbsd? y
> rm: netbsd: Operation not permitted
> /> chmod +w netbsd
> chmod: netbsd: Operation not permitted
> /> 
> 
> I even tried to delete it in the single user mode, but it is still not
> working. Anyone can help? Thank you in advanced.
> --ycchu
>