If you wish to install Slackware from floppies instead of the hard drive, you'll need to have one blank, MS-DOS formatted floppy for each Slackware disk that you downloaded. These disks must be high-density format.
The A disk set (disks A1 through A3) may be either 3.5" or 5.25" floppies. However, the rest of the disk sets must be 3.5" disks. Therefore, if you only have a 5.25" floppy drive, you'll need to borrow a 3.5" drive from someone in order to install disk sets other than A. (Or, you can install from the hard drive, as explained in the previous section.)
To make the disks, simply copy the files from each Slackware directory onto an MS-DOS formatted floppy, using the MS-DOS COPY command. As so:
C:\> COPY A1\*.* A:
will copy the contents of the A1 disk to the floppy in drive A:. You should repeat this for each disk that you downloaded.
You do not need to modify or uncompress the files on the disks in any way; you merely need to copy them to MS-DOS floppies. The Slackware installation procedure takes care of uncompressing the files for you.