File:  [NetBSD Developer Wiki] / wikisrc / guide / inst-media.mdwn
Revision 1.3: download - view: text, annotated - select for diffs
Fri Jun 19 19:18:31 2015 UTC (6 years, 11 months ago) by plunky
Branches: MAIN
CVS tags: HEAD
replace direct links to manpages on with templates

    1: **Contents**
    3: [[!toc levels=3]]
    5: # Building NetBSD installation media
    7: ## Creating custom install or boot floppies for your architecture e.g. i386
    9: Sometimes you may want to create your own boot or install floppies for i386
   10: instead of using the precompiled ones, or tailor the ones built by the NetBSD
   11: build system. This section outlines the steps to do so.
   13: The overall idea is to have a filesystem with some tools (sysinst, ls,
   14: whatever), and embed this filesystem as some sort of ramdisk into a NetBSD
   15: kernel. The kernel needs to include the `md` pseudo device to be able to hold a
   16: ramdisk. The kernel with the ramdisk can then be put on removable media or made
   17: available via the net (using NFS or TFTP).
   19: To perform the following steps, you need to be running a kernel with the `vnd`
   20: pseudo device enabled (this is the default for a GENERIC kernel).
   22:  1. First, you must create a valid kernel to put on your floppies, e.g.
   23:     INSTALL. This kernel must include the `md` pseudo device, which allows
   24:     embedding a ramdisk. See [[Compiling the kernel|guide/kernel]] for kernel
   25: 	building instructions.
   27:  2. The next step is to create the ramdisk that gets embedded into the kernel.
   28:     The ramdisk contains a filesystem with whatever tools are needed, usually
   29: 	[[!template id=man name="init" section="8"]] and
   30:     some tools like sysinst,
   31: 	[[!template id=man name="ls" section="1"]], etc.
   32: 	To create the standard ramdisk, run `make` in the
   33:     `src/distrib/i386/ramdisks/ramdisk-big` directory (for NetBSD 3.x:
   34:     `src/distrib/i386/floppies/ramdisk-big`).
   36: 	This will create the `ramdisk.fs` file in the directory. If you want to
   37: 	customize the contents of the filesystem, customize the `list` file.
   39:  3. Now, the ramdisk gets inserted into the kernel, producing a new kernel which
   40:     includes the ramdisk, all in one file. To do so, change into the
   41:     `src/distrib/i386/instkernel` directory (for NetBSD 3.x:
   42:     `src/distrib/i386/floppies/instkernel`) and run `make`.
   44:  4. The next step is to make one or more floppy images, depending on the size of
   45:     the kernel (including the ramdisk). This is done by changing into
   46:     `/usr/src/distrib/i386/floppies/bootfloppy-big`, and running `make` again.
   48: 	This will create one or two (depending on the size of kernel) files named
   49: 	`boot1.fs` and `boot2.fs`
   51:  5. Last, transfer these files to the floppies with the commands
   53:         # dd if=boot1.fs of=/dev/fd0a bs=36b
   54:         # dd if=boot2.fs of=/dev/fd0a bs=36b
   56:  6. Put the first floppy in the drive and power on!
   58: ## Creating a custom install or boot CD with
   60: Creating custom install or boot CDs is easy with ``. The NetBSD base
   61: system includes the
   62: [[!template id=man name="makefs" section="8"]]
   63: tool for creating filesystems. This tool is used to create iso-images. Creating
   64: iso-images includes these tasks:
   66:  1. Release build
   68:         #./ release
   70:  2. CD-ROM iso-image build
   72:         #./ iso-image
   74: The `` iso-image command will build a CD-ROM image in
   75: `RELEASEDIR/MACHINE/installation`
   77: **Warning**: For now not all architectures are supported. The mac/68k ports
   78: doesn't boot for now.

CVSweb for NetBSD wikisrc <> software: FreeBSD-CVSweb