I just ran into this same problem, trying to install 13.04 amd64 server to raid10 root with 4 disks from a usb stick created with usb-creator-kde on kubuntu 13.04 desktop.
Verification of the "CD-ROM disc" from the menu fails for the usb stick, but this seems to be bogus.
Failed files are
md5sum: ./install/netboot/ubuntu-installer/amd64/pxelinux.cfg/default: No such file or directory
md5sum: ./install/netboot/pxelinux.0: No such file or directory
md5sum: ./install/netboot/pxelinux.cfg/default: No such file or directory
which are all symlinks, vfat on usb does not support those.
I just ran into this same problem, trying to install 13.04 amd64 server to raid10 root with 4 disks from a usb stick created with usb-creator-kde on kubuntu 13.04 desktop.
Verification of the "CD-ROM disc" from the menu fails for the usb stick, but this seems to be bogus.
Failed files are
md5sum: ./install/ netboot/ ubuntu- installer/ amd64/pxelinux. cfg/default: No such file or directory netboot/ pxelinux. 0: No such file or directory netboot/ pxelinux. cfg/default: No such file or directory
md5sum: ./install/
md5sum: ./install/
which are all symlinks, vfat on usb does not support those.
So what's up?