By default, when you download to your c:disk. There is not always enough room there.

In the browser you use, you can set to download to another partition or drive (e.g., external hard drive).

Herewith tips to adjust this setting:

• Chrome : https://www.seniorweb.nl/tip/downloadmap-in-chrome-veranderen
• Safari: https://www.seniorweb.nl/tip/download-in-safari-opslaan-op-gewenste-plek
• Edge: https://computertotaal.nl/artikelen/pc/zo-kun-je-de-downloadmap-in-edge-wijzigen/
• Firefox: https://www.thefastcode.com/nl-eur/article/how-to-change-the-firefox-download-folder-location