I solved the issue by physically disconnecting one of my 4 drives, installing 13.10 with Live-USB, and reconnecting the one HDD.
WDC WD5000AAKX-00ERMA0 (15.01H15) * WDC WD1500ADFD-00NLR5 (21.07QR5) SanDisk SDSSDP128G (2.0.0) - root WDC WD5000AAKS-65YGA0 (12.01C02) * * one of them was disconnected (I'm not sure which one) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1241589 Title: ubuntu 13.10 unable to boot on live usb (busy box - initramfs) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1241589/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs