http://www.techspot.com/community/topics/how-to-install-dos-onto-hard-drive-without-floppy-cd-rom.31667/

• Buy a 2.5“ to 3.5” adapter, take the harddisk out of the laptop, put it as Slave in a PC.
• Then format that HD, using the other PCs options.
• Or use a W98SE bootfloppy (www.bootdisk.com has the files to make one).
• Use FDISK from that floppy, to partition the HD, big one in front, small one (2-3GB) at the back, and set the first partition to Active.Then from the A:\> prompt type in format x: /s /u where x = the first partition.
• Then from the A:\> prompt type in format y: /u where y = the second partition. Next, copy your W2K files onto the second partition.
• Put the jumper back to Master and put the HD back in the laptop.
• It will boot to the C:\> prompt. Go to the small partition with W2K files and type in: setup and off you go.