gallegos@csxxi.sepc.edu.mx said:
> "Tabla de particion invalida" (yes, in spanish) 

The NetBSD bootstrap doesn't speak spanish as far as I know, so
the message can only come from the BIOS or some stale bootsector
contents.
Your disklabel looks OK.

> I installed 1.4 over the hard disk, i think
> the install diskette wrote the partition table over the linux table.

The standard installation does not overwrite the master boot record
if it appears to contain a valid bootloader.
You should reinstall it with "fdisk -i".

best regards
Matthias