

I have tried both NTFS and FAT32 filesystems, but neither succeed. The HP USB format tool, as mentioned in this answer does format it, but that does not enable bootability.

When putting an image on it with either Yumi or diskpart and xcopy, none of the three PCs I tested are able to boot it, but none of them have problems booting from another smaller, slower 8GB drive.

The Windows 7 USB install tool doesn't recognize it either. Pendrive Linux' Yumi installer doesn't recognize it, and only lists it when "show all devices" is checked. I recently got a 64GB USB stick and planned to make it a system repair multitool, with different Linux and Windows installers and live images, but I seem to have a USB stick that cannot be booted.
