Dell OS Recovery Tool is a freeware app that can be used to create a USB recovery drive to reinstall the Windows or Linux that came with your PC.

Floppy Boot Disk Images for DOS - Windows 98 contains all the floppy disk boot images you need to get any old operating system installed including DOS, Windows 95, 98, XP, ME, and 2000.

DOS 5.0 - 6.22 Floppy Boot Disk Image is the original DOS 5.0, 6.0, 6.21, and 6.22 boot disks with IDE CDrom drivers included and even 5.25 disk image for DOS 6.22.

ASUS EZ Installer can create a Windows 7-10 installation file with USB 3.0 drivers preloaded for your ASUS PC.

Windows 95 Floppy Boot Disk Image is the original Windows 95 boot disks for Windows 95 and 95B with IDE CDrom drivers included.

Windows XP Professional Floppy Boot Disk Image is the original Windows XP Professional, SP1, and SP2 boot disks.

Windows 98 Floppy Boot Disk Image is the original Windows 98, 98SE, OEM and No Ramdrive boot disks.

rEFInd is a fork of the rEFIt boot manager. Like rEFIt, rEFInd can auto-detect your installed EFI boot loaders, and it presents a pretty GUI menu of boot options.

Multiboot Utility assists you in performing Grub2, Grub4Dos, Grub2 File Manager, Secure Boot installations on USBs as well as hard drives.

Windows 2000 Floppy Boot Disk Image is the original Windows 2000 boot disk images as well as makeboot.exe and makebt32.exe.

Windows ME Floppy Boot Disk Image is the original Windows ME boot disks with IDE CDrom drivers included.

AUMBI (Absolute USB MultiBoot Installer) is a free, portable app that allows you to have multiple Linux operating systems on a single USB (flash, thumb) drive.

rEFIt is a boot menu and maintenance toolkit for EFI-based machines like the Intel Macs. For newer machines, rEFInd, which is a fork of this app, and is still being developed, will be more suited.