Installing Windows Vista from USB is feasible but requires attention to boot methods, USB port type, and storage drivers. Given Vista’s end-of-life status (extended support ended April 11, 2017), such installations are not recommended for internet-connected systems due to security risks. Use only for offline legacy hardware testing.
cd X:\boot (X = DVD drive letter) bootsect /nt60 Y: (Y = USB drive letter) install vista from usb
Unlike its successors, Windows 7 or 10, Vista was not natively designed with a "Media Creation Tool" for USBs. Installing it via flash drive required manual labor: Installing Windows Vista from USB is feasible but
The Digital Bridge: Transitioning Windows Vista to the USB Era USB port type