I’ve one ONKYO entry level AVR HT-S3800 and it has a front USB port, mostly for playing audio files. This port has issues reading USB drives that exceed certain size limits. Say, if you plug a 16GB drive, there are high possibilities that this unit “may not” read it & I came across such a situation recently. To be quite truthful, I hardly ever tested this USB port & while repositioning the unit, I decided to give it a try.
After some deep scavenging I found an APACER Handy Steno, 512MB USB Flash drive from my collection of antiques, that I bought around 2004-2005. My AVR happily started playing from it, while it dissed my 16GB USB stick. So I thought of all possible solutions like ordering a 2GB USB stick online, getting one USB micro sd card reader etc etc.
After couple of days, at work I came up with a vicious idea. Got hold of my 16GB USB stick, removed the volume and created a 2GB volume, formatted with FAT32 and copied my audio files and took it home and connected to the AVR.
My unit started playing from the USB stick happily and no more hours long scanning or dissing the disk! The hack was fooling the unit to “think” the disk has only 2GB storage. The only downside of this hack is losing the balance storage. Who knows, this hack could be applied to other legacy devices as well, especially for car stereo head units that are few years old.