How to get some needed binaries for an old installation (to do a system update to NetBSD 9.3)

[Dennis Dingeldein <dennis.dingeldein%spurtikus.de@localhost>]

I am trying to update a MicroVAX 3100, running an old NetBSD 1.5.3.

My idea was to add NetBSD 9.3 on another disk. So I attached an 
additional hard drive to the machine and wanted to partition that disk 
and partition it.

On one partition I wanted to put the NetBSD installation and boot from 
that drive then.

My problem now is, on that 1.5.3 installation, there is no fdisk and no 
mkfs. I checked the installations tgz files located here 
https://archive.netbsd.org/pub/NetBSD-archive/NetBSD-1.5.3/vax/binary/sets/, 
but these also do not contain mkfs and fdisk.

From where can I get these files to continue my installation of NetBSD 
9.3. ?

I am very restricted in my options for the installation, I have 
harddisk, cdrom and maybe floppy(not tested). With cdrom I've already 
failed,

because MicroVAX console boot loader seems to have problems with either 
the drive or the ISO image containing NerttBSD 9.3 I've used

(downloaded from 
https://ftp.fau.de/netbsd/NetBSD-9.3/iso/NetBSD-9.3-vax.iso )

So my question is

from where can I get 1.5.3 versions of fdisk and mkfs. I saw there is 
newfs, which may replace mkfs. But fdisk still seems missing.

Or is there an easier way to do it? Any help welcome

(I am a NetBSD new user. But using Linux for +30 years, so both newbie 
and old rabbit).

Dennis