Linux – After Arch Linux install it just shows the text “No bootable device found”

I've been trying to install Arch Linux. After the installation, it shows the BIOS screen and after that there just comes a message that says "No bootable device found".

I have retried the whole scenario now some times, still it just shows the same message…

At installing, I have followed the Unofficial Beginner's Guide from the ArchLinux wiki.

Here is what I did:

First of all, I wiped the hard drive (on which before the wipe was Windows Vista installed) and put GPT on it by using gdisk. Then I set up some partitions, which now look as the following (output of parted):

Model: ATA ST9160310AS (scsi)
Disk /dev/sda: 160GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags:

Number  Start   End     Size    File system     Name                 Flags
 1      1049kB  2097kB  1049kB                  BIOS boot partition  bios_grub
 2      2097kB  107MB   105MB   ext2            Linux filesystem     
 3      107MB   21.6GB  21.5GB  ext4            Linux filesystem     
 4      21.6GB  30.2GB  8590MB  linux-swap(v1)  Linux swap           
 5      30.2GB  160GB   130GB   ext4            Linux filesystem     

Then I mounted the root partition (sda2) to /mnt, after that also the boot and the home partition (sda3 and sda5) to /mnt/boot and /mnt/home and at the end formatted and activated the swap partition (sda4).

Now I began installing the base system. After selecting the mirrors, I installed base and base-devel.

At the end of the install I generated an fstab.

Then I finally chrooted into /mnt, set up some Locales, set a root password and then installed and configured Grub2, exactly as it is explained here.

At the end I exited from the chroot environment, unmounted the partitions and rebooted. You know the rest… It just showed the message that it coudn't find any bootable devices.

By the way, I tried to install it on this computer.