Is it necessary to boot from USB?

[f1vefour]

(17th Nov, 2013 08:09 AM)burgertime Wrote:  

(17th Nov, 2013 07:32 AM)rikardo1979 Wrote:  I would see this issues is caused by PSU, as the XBMC is more power demanding than Linux OS systems

really? odd, I'm just using a micro USB cable and the wall plug I bought with my model b. you mean maybe a defective pi?

No he means a weak power supply, the Pi does best with a 1+ amp 5v power power supply (adapter).