[solved]liveusb can't boot at a new computer

vvgloo · n00b Joined: 09 Feb 2006 Posts: 25

I want to install gentoo at a new computer by a liveusb disk, it made from a install-amd64-minimal-xxx.iso. but computer can't boot. I got some error like these:
media not found,
nobootable medium found,
can't find /newroot in /etc/fstab and so on.
I found some threads by searching, but no gain. is there anyone here who have the same error?

DONAHUE · Posted: Thu Oct 09, 2014 4:21 pm Post subject:

You may have missed a step.

Suggest using this instead: http://www.sysresccd.org/Sysresccd-manual-en_How_to_install_SystemRescueCd_on_an_USB-stick

gentoo based, much better hardware support including wifi, easy to use xfce4 GUI in which a browser and a terminal window can be open side by side, nothing from the install medium becomes part of the installed system.
_________________
Defund the FCC.

vvgloo · n00b Joined: 09 Feb 2006 Posts: 25

Thank you.
I found the reason.
My mainboard is gigabyte 970a, it have a issue under linux:
By default, the board is shipped with IOMMU deactivated in the BIOS. With such settings the USB 3.0 ports work under Linux, but the USB 2.0 and Ethernet are deactivated. If IOMMU is activated, USB 2.0 and Ethernet work under Linux, but the USB 3.0 ports are deactivated.
So I met this issue accidentally.