GRUB2 Headaches

Question

Hey Peeps,
So I was playing around earlier today with a GPT/LVM/GRUB2 install. I've read up on it a bunch, as well as the Arch GRUB2 & LVM wiki's and a video on YouTube. Things seem to go well up until the part of doing grub-mkconfig... it doesn't work.
The video tutorial I watched showed it finding the linux and initrd images, but mine doesn't. So needless to say, if I reboot it crashed. I've gotten it to load GRUB2 and start-up if I just delete the entire grub.cfg file and make my own basic one, but this seems much different than other people's experience.
Why is grub-mkconfig not working right? It creates a config file, but saves it as grub.cfg.new instead of grub.cfg. It also doesn't use the contents of /etc/grub.d/custom_40 like the video tutorial shows either.
Thanks for any help!
Here's the video tutorial I was following.
http://www.youtube.com/watch?v=69X9ZYA41xU

Answer 1

You're right... crash isn't the right word. I believe, from memory, the error was something about fd0.
I know I can copy the grub.cfg.new to grub.cfg, just find it odd that none of the other tutorials or installs I've read about discuss doing this.
Here's a transcript of the video taken from https://bbs.archlinux.org/viewtopic.php?id=133170
[root@archiso ~]# modprobe dm-mod
[root@archiso ~]# dhcpcd
[root@archiso ~]# pacman -Syy gptfdisk
[root@archiso ~]# gdisk /dev/sda
GPT fdisk (gdisk) version 0.8.1
Partition table scan:
MBR: not present
BSD: not present
APM: not present
GPT: not present
Creating new GPT entries.
Command (? for help): [n]
Partition number (1-128, default 1): [RETURN]
First sector (34-[max], default = 34) or {+-}size{KMGTP}: [RETURN]
Information: Moved requested sectory from 34 to 2048 in
order to align on 2048-sector boundries.
Use 'l' on the experts' menu to adjust alignment
Last sector (2048-[max], default = [max]) or{+-}size{KMGTP}: [+32MB]
Current type is 'Linux filesystem'
Hex code or GUID (L to show codes, Enter = 8300): [EF02]
Changed type of partition to 'BIOS boot partition'
Command (? for help): [n]
Partition number (2-128, default 2): [RETURN]
First sector (34-[max], default = 67584) or {+-}size{KMGTP}: [RETURN]
Last sector (2048-[max], default = [max]) or {+-}size{KMGTP}: [RETURN]
Current type is 'Linux filesystem'
Hex code or GUID (L to show codes, Enter = 8300): [8E00]
Changed type of partition to 'Linux LVM'
Command (? for help): [w]
Final checks complete. About to write GPT data. THIS WILL OVERWRITE EXISTING PARTITIONS!!
Do you want to proceed? (Y/N): [y]
OK: writing new GUID partition table (GPT).
The operaton has completed successfully.
[root@archiso ~]# pvcreate /dev/sda2
[root@archiso ~]# vgcreate arch /dev/sda2
[root@archiso ~]# vgdisplay
[root@archiso ~]# lvcreate -L 100M -n boot arch
[root@archiso ~]# lvcreate -C y -L 1G -n swap arch
[root@archiso ~]# lvcreate -L 10G -n root arch
[root@archiso ~]# lvcreate -l 100%FREE -n home arch
[root@archiso ~]# lvscan
[root@archiso ~]# mkfs.ext2 /dev/arch/boot
[root@archiso ~]# mkfs.ext4 /dev/arch/root
[root@archiso ~]# mkfs.ext4 /dev/arch/home
[root@archiso ~]# mkswap /dev/arch/swap
[root@archiso ~]# /arch/setup
Prepare Hard Drive
3 Manually Configure block devices, filesystems andmountpoints
Partition Access Method
dev directly by /dev/* (most intuitive but devicefile names can change
Manage Filesystems
/dev/sda1 raw - 32MiB N
/dev/mapper/arch-boot raw - 100MiB N > [IGNORE]
/dev/mapper/arch-home raw - 91000MiB N > filesystem (re)created? [NO] > ext4 home
/dev/mapper/arch-root raw - 10240MiB N > filesystem (re)created? [NO] > ext4 root
/dev/mapper/arch-swap raw - 1024MiB N > filesystem (re)created? [NO] > swap
Choose bootloader
[SKIP]
Configuration
mkinitcpio > HOOKS="...lvm2..."
DONE
Exit
[root@archiso ~]# mount -o bind /dev /mnt/dev
[root@archiso ~]# mount -t proc /proc /mnt/proc
[root@archiso ~]# mount -t sysfs /sys /mnt/sys
[root@archiso ~]# chroot /mnt /bin/bash
[root@archiso /]# dhcpcd
[root@archiso /]# pacman-db-upgrade
[root@archiso /]# pacman -Syy grub2-bios
[root@archiso /]# grub_bios-install --boot-directory=/boot --no-floppy --recheck --debug /dev/sda
[root@archiso /]# grub-mkconfig -o /boot/grub/grub.cfg
[root@archiso /]# exit
[root@archiso ~]# reboot
login
[root@host ~]# $EDITOR /etc/default/grub
#GRUB_GFXMODE=auto
#GRUB_GFXPAYLOAD_LINUX=keep
#GRUB_COLOR_NORMAL="light-blue/black"
#GRUB_COLOR_HIGHLIGHT="light-cyan/blue"
[root@host ~]# chmod -x /etc/grub.d/10_linux
[root@host ~]# $EDITOR /etc/grub.d/40_custom
menuentry "Arch Linux" {
insmod lvm
set root=(arch-boot)
linux /vmlinuz-linux root=/dev/arch/root ro
initrd /initramfs-linux.img
menuentry "Arch Linux Fallback" {
insmod lvm
set root=(arch-boot)
linux /vmlinuz-linux root=/dev/arch/root ro
initrd /initramfs-linux-fallback.img
[root@host ~]# grub-mkconfig -o /boot/grub/grub.cfg
[root@host ~]# reboot
All goes well on my end until I get to grub-mkconfig -o /boot/grub/grub.cfg, which in the video shows it finding several images, but in my case none.