Hubert Feyrer schrieb:

> On Sun, 5 Nov 2006, Rainer Brinkmoeller wrote:
>
>> What i found was this:
>> http://mail-index.netbsd.org/port-i386/2004/07/08/0015.html
>> "Error 3 is reported when the first sector of the mbr partition (sector
>> 63 here) doesn't contain boot code. This is usually added by installboot
>> but it (probably) relies on the root filesystem being at the start of
>> that partition."
>>
>> But i don't know what to do to boot successull into xen.
>
>
> Maybe grub(?) can't read the filesystem to find the file it's looking 
> for?
> I could imagine this happening when grub tries to find things on an 
> FFSv2 or LFS filesystem...
>
>
>  - Hubert

It was a FFSv1 filesystem. But only one big (140 GB) Partition in one 
slice with only a / mount point.

So i did learn and reinstall. Now my / is a 1024 MB big mount point 
(within its own slice) with 8k/1k block/fragment sizes on a FFSv1 
filesystem.
Other mount points (like /usr, /var, /home, etc.) are different slices.

It seems to work fine. NetBSD -current with Xen 3.0.3 is booting now. 
Thanks to Manuel.
The Problem with the GENERIC kernel still exist. But i didn't try to 
compress again or without "--type=netbsd" yet.

> 
> Isn't it better to make a small /boot (or /stand) partition which would
> hold only the kernels, like Linux does if the bios does have disk size
> limit?
> 
> Small / can be inconvenient.
> 
> Rainer, can't you steal some space from swap partition to create such
> small partition?
> 

@Pavel:
no i could not because i used the complete disk as one partition and 
also as mount point /.
Why do you think that a small / can be inconvenient?
In my opinion a 2048 MB / should be ok for grub. All other mount points 
can have their own slices like the way i did.

regards,
Rainer