These are some notes from installing Archlinux ARM on my raspberry pi.
The default root partition is much smaller than my 32gb SD card. We can resize it with fdisk
as suggested in these useful forum posts on the subject.
# fdisk /dev/mmcblk0
Welcome to fdisk (util-linux 2.24.1).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.
Command (m for help): p
Disk /dev/mmcblk0: 29.7 GiB, 31914983424 bytes, 62333952 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x417ee54b
Device Boot Start End Blocks Id System
/dev/mmcblk0p1 2048 186367 92160 c W95 FAT32 (LBA)
/dev/mmcblk0p2 186368 3667967 1740800 5 Extended
/dev/mmcblk0p5 188416 3667967 1739776 83 Linux
Command (m for help): d
Partition number (1,2,5, default 5): 2
Partition 2 has been deleted.
Command (m for help): n
Partition type:
p primary (1 primary, 0 extended, 3 free)
e extended
Select (default p): e
Partition number (2-4, default 2):
First sector (186368-62333951, default 186368):
Last sector, +sectors or +size{K,M,G,T,P} (186368-62333951, default 62333951):
Created a new partition 2 of type 'Extended' and of size 29.6 GiB.
Command (m for help): n
Partition type:
p primary (1 primary, 1 extended, 2 free)
l logical (numbered from 5)
Select (default p): l
Adding logical partition 5
First sector (188416-62333951, default 188416):
Last sector, +sectors or +size{K,M,G,T,P} (188416-62333951, default 62333951):
Created a new partition 5 of type 'Linux' and of size 29.6 GiB.
Command (m for help): p
Disk /dev/mmcblk0: 29.7 GiB, 31914983424 bytes, 62333952 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x417ee54b
Device Boot Start End Blocks Id System
/dev/mmcblk0p1 2048 186367 92160 c W95 FAT32 (LBA)
/dev/mmcblk0p2 186368 62333951 31073792 5 Extended
/dev/mmcblk0p5 188416 62333951 31072768 83 Linux
Command (m for help): w
The partition table has been altered.
Calling ioctl() to re-read partition table.
Re-reading the partition table failed.: Device or resource busy
The kernel still uses the old table. The new table will be used at the next reboot or after you run partprobe(8) or kpartx(8).
# reboot
All that's left do is resize the new volume after reboot.
# resize2fs /dev/mmcblk0p5
resize2fs 1.42.9 (28-Dec-2013)
Filesystem at /dev/mmcblk0p5 is mounted on /; on-line resizing required
old_desc_blocks = 1, new_desc_blocks = 2
The filesystem on /dev/mmcblk0p5 is now 7768192 blocks long.
# df /
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/root 30575292 427948 28874492 2% /
Say what you want -- I like systemd.
# hostnamectl set-hostname tofu
# echo "en_US.UTF-8 UTF-8" >> /etc/locale.gen
# locale-gen
# localectl set-locale LANG="en_US.UTF-8"
# timedatectl set-timezone America/Chicago
# timedatectl set-ntp 1
# cp /etc/netctl/examples/wireless-wpa /etc/netctl
# wpa_passphrase $SSID $WIFI_PASS >> /etc/netctl/wireless-wpa
Edit so that Key=\"<HEX KEY FROM WPA_PASSPHRASE>
and enable it.
You can unset HISTFILE
so that your wifi pass doesn't get written to your .bash_history
.
# netctl enable wireless-wpa
# netctl start wireless-wpa
A detailed list of possibile configuration options can be found here. A list of changes I made is below:
# 1920x1080 from HDMI
hdmi_group=2
hdmi_mode=82
# some overclocking
arm_freq=950
core_freq=450
sdram_freq=450
over_voltage=6
# less gpu memory = more memory
gpu_mem_512=64
gpu_mem_256=64
These will take change on next reboot.
# pacman -Syu
# pacman -S vim sudo git tmux xf86-video-fbturbo-git fbterm
Time for some twerking tweaking.
Like everything else, the ArchWiki has a great wiki for the raspberry pi.
I'll come back to this.