There is a problem with the image generated from make usb-image for the following project: configure --enable-parallel-pkgbuilds=32 --enable-jobs=32 --enable-checkout-all-layers=yes --enable-rm-oldimgs=yes --enable-sdkimage-staticlibs=yes --enable-reconfig --enable-bootimage=hdd,iso --enable-board=intel-x86-64 --enable-kernel=ovp --enable-rootfs=ovp-kvm --enable-addons=wr-ovp --enable-internet-download=yes --with-template=feature/dpdk,feature/initramfs,feature/build_libc --with-package=python --without-template=i40e --with-rcpl-version=0017 The usb.img presents this error: EXT3-fs (sda2): error: couldn't mount because of unsupported optional features (240) EXT4-fs (sda2): couldn't mount as ext2 due to feature incompatibilities EXT4-fs (sda2): mounted filesystem with ordered data mode. Opts: (null) mount: mounting unionfs on /aufs failed: No such device Waiting for root device to be ready... mount: mounting /dev/sda2 on /rootfs failed: Device or resource busy mount: mounting /dev/sda2 on /rootfs failed: Device or resource busy If you mount hte .iso image the error is not present.