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NOTE: If you wish to install NetBSD on your whole disk, i.e. you do
not want DOS or any other operating system to reside on your hard
disk, you can skip this section and go on to the section that
describes installation, below. If you're upgrading your system from a
previous release of NetBSD, you shouldn't have proceeded directly to
the section about upgrading; you need none of the information
presented here.
First and foremost, before beginning the installation process, MAKE
SURE YOU HAVE A RELIABLE BACKUP of any data on your hard disk that you
wish to keep. Repartitioning your hard disk is an excellent way to
destroy important data.
Second, if you are using a disk controller which supports disk
geometry translation, be sure to use the same parameters for NetBSD as
for DOS or the other operating systems installed on your disk. If you
do not, it will be much harder to make NetBSD properly coexist with
them.
Third, use the DOS "fdisk" program or another partition editor to
repartition your hard disk. Create a partition of at least 40M in
size, and note its starting offset and its length (preferably in units
of disk sectors or cylinders). You will need that information when
installing NetBSD (and if the offset and length are not in those
units, you will have to convert them). Once you have created the new
NetBSD partition, mark it as having a partition type of 0xA5 (165, in
decimal). If you used "fdisk" to partition your disk, you will
probably have to use a different partition editor to mark the
partition with the correct type.
Finally, do whatever is necessary to restore order to the partition
you took space away from. If it was a DOS partition, you probably
will need to use "format" to create a new file system on it, and then
restore your important files from your backups. Other operating
systems will have different needs; most will need to reformat the
partition, and if it was their "main" partition, will probably need
to be reinstalled.
Your hard disk is now prepared to have NetBSD installed on it, and
you should proceed with the installation instructions.
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