installation - How can I create a pen drive that I can boot from, and then install Win98 from?

I have a HP Compaq t5515 thin client computer with a flash disk and USB port. I want to put Win98 onto it, replacing whatever is on there now (I think it is some Linux-based thing). I can find stuff about putting Win98 onto a pen drive and running from that, but I can't find any info about installing Windows 98 from a pen drive onto a sep[arate system.

Is it just a matter of

• making the pen drive bootable to DOS


• copying the contents of a Win98 installation CD onto the pen drive


• booting the HP machine from the pen drive


• running SETUP.EXE from the pen drive?

Any pointers appreciated.
TIA