Within 5-10 minutes, your bootable USB is ready.

Perfect for IT pros or when you can’t install third-party tools. All you need is an elevated Command Prompt.

Since you want to work “online” or without installation, download the version of Rufus:

For 32-bit Windows 7, a 4GB drive barely works (ISO size is ~2.5-3GB). For 64-bit, you need 8GB. Spend $5 on a larger drive.

Microsoft no longer provides these on their official site, but they can often be found on community archives like Internet Archive. A USB flash drive: At least 8GB to 16GB is recommended. Backup: The process will erase all data on the USB drive. Method 1: Using Rufus (Recommended)

If you have a valid product key, you may still be able to access the official download portal, though it is becoming increasingly rare.