Enter about:config into the Firefox address bar ÁÖ¼Òâ¿¡ about:config Ä¡¼¼¿ä
Click the I promise button À§ÇèÀ» °¨¼öÇÏ°Ú½À´Ï´Ù ¹öÆ°À» ´·¯ÁÖ¼¼¿ä
Locate the browser.cache.disk.capacity integer °Ë»öâ¿¡ cache.disk.capacity °Ë»öÇØÁÖ¼¼¿ä
Change the value to the amount of kilobytes that you want Firefox to use or right click the value and set it to the default