Downloaded 12.2 Slackware files from Internet. Is there a way to
install them on DOS platform from hard drive?

The normal way would be to download a CD bootable image (iso file) which you burn on a CD (as a CD image) and install linux that way. Since linux is an operating system it wouldn't make sense to install in on a DOS platform. It could share a partitioned hard disk with DOS but each OS, Dos and Linux would have its own partition.
cheers,
jdk

JDKAYE,
I tried what you said and had trouble attempting to load the
Generic kernel it would start and the the system would reboot.
The computer I am using is a Pentium II with Win98se and 391 MBytes of ram, more than enough to run Linux. I used Loadlin to start the system but all I got was a reboot. At this time I cannot load even a basic system. I am using a 10 Gbyte hard drive. I tried it with a 7 GByte partition which should be enough to load the basic system. If you or anyone else has any other ideas, I am open to them. Thank you for your help.

I've never used LoadLin for anything but here's a tutorial on using it. Maybe you've read it already?

http://www.faqs.org/docs/Linux-mini/...-ME.html#ss3.3

Did you format your partition for Slackware w/a Linux filesystem?

You need to install using the default huge-smp kernel. Then if you want to change to the generic, you'll need to create an initrd. You can find out what command to use with mkinitrd by running this script as root:

http://www.slackware.com/~alien/tool...d_generator.sh

Then edit /etc/lilo.conf, and run lilo.