This is especially infuriating when you have a laptop with no CDROM drive and it doesn’t like to boot off usb because of… Officially the problem is a buggy BIOS, what’s actually happening is the iommu register is being mapped to ‘0’ rather than any actual address. Edit /boot/grub/and add the following: [ 0.000000] WARNING: at drivers/pci/dmar.c:633 warn_invalid_dmar 0x7d/0x8d() [ 0.000000] Hardware name: HP Compaq 6730b (SERIAL NUMBER) [ 0.000000] Your BIOS is broken; DMAR reported at address 0!
This means the CPU has it, the BIOS maps it incorrectly and then tells the OS to use ‘0’ as the address in memory. [ 0.000000] BIOS vendor: Hewlett-Packard; Ver: 68PDD Ver.
It's a bootable DVD image, which will upgrade all the firmware on your server, including the BIOS.
The laptop won’t USB boot, because of the 00D BIOS. Assuming our G5 does not have Windows on it, can someone enlighten me as to how this works?Does it make a bootable USB stick for you to then plug into the G5? XASROCK C2750D4IZOTAC A75-ITX WIFI B SERIES (A75ITX-B-E)ZOTAC H87 (H87MAT-A-E)more...This page has installation instructions for an update to the BIOS.