Adam, you're right in your original post that initrd is the cause of the delay. Other non-Ubuntu based distros do not have the long 50 secs wait to boot OS at usb. (same kernel) It's just 13 secs vs 50secs. (haven't tried Debian distros).
One would think after 5 years, something ought to be done about it. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/247960 Title: Grub long sequential reads are extremely slow from USB2.0 HDD/FLASH drives To manage notifications about this bug go to: https://bugs.launchpad.net/grub/+bug/247960/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs