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random:installing_archlinux_on_an_sd_card [2013/05/22 20:00] |
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| + | ===== Installing ArchLinux on the BeagleBone Black via SD card ===== | ||
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| + | At a minimum, you need to create the first partition on an SD card to store the bootloader files and kernel uImage. For the root filesystem you can choose to use either a USB drive or the second partition on the SD card. This example will partition an SD card. Replace instances of /dev/sdX with the device that the card registers as on your computer. | ||
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| + | Install the SD card in a USB card reader and plug the card reader in the BeagleBone Black USB socket. | ||
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| + | Check that the card is mounted with: | ||
| + | dmesg | tail | ||
| + | which will return something like: | ||
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| + | [111735.902674] sd 1:0:0:0: [sda] No Caching mode page present | ||
| + | [111735.908773] sd 1:0:0:0: [sda] Assuming drive cache: write through | ||
| + | [111735.915383] sd 1:0:0:0: [sda] Attached SCSI removable disk | ||
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| + | indicating the card was mounted as /dev/sda | ||
| + | If the card was not mounted as /dev/sda, change the following to the proper name. | ||
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| + | Start fdisk to partition the SD card: | ||
| + | fdisk /dev/sda | ||
| + | At the fdisk prompt, delete old partitions and create a new one: | ||
| + | * Type 'o'. This will clear out any partitions on the drive. | ||
| + | * Type 'p' to list partitions. There should be no partitions left. | ||
| + | * Type 'n', then 'p' for primary, '1' for the first partition on the drive, 'Enter' to accept the default first sector, then '+64M' to set the size to 64MB. | ||
| + | * Type 't' to change the partition type, | ||
| + | * Type 'e' to set it to W95 FAT16 (LBA). | ||
| + | * Type 'a', then type '1' to set the bootable flag on the first partition. | ||
| + | * Type 'n', then 'p' for primary, '2' for the second partition on the drive, and 'Enter' twice to select the default first and last sectors. | ||
| + | * Type 'w' to write the partition table and exit. | ||
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| + | Create the FAT16 filesystem: | ||
| + | mkfs.vfat -F 16 /dev/sda1 | ||
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| + | Create the ext4 filesystem: | ||
| + | mkfs.ext4 /dev/sda2 | ||
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| + | Download the BeagleBone bootloader tarball and extract the files onto the first partition of the SD card. These files contain the bootloaders needed to load the kernel. The file MLO needs to be the first file put onto the FAT partition, and extracting the tarball as-is should do this for you. If you have problems getting to U-Boot, re-format and place the files manually. | ||
| + | wget http://archlinuxarm.org/os/omap/BeagleBone-bootloader.tar.gz | ||
| + | mkdir boot | ||
| + | mount /dev/sdX1 boot | ||
| + | tar -xvf BeagleBone-bootloader.tar.gz -C boot | ||
| + | umount boot | ||
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| + | Download the root filesystem tarball and extract it (as root, not via sudo) to the ext3 partition on either the SD card or the USB drive. It is important to do this as root, as special files need to be created as part of the filesystem that can only be created by root. | ||
| + | wget http://archlinuxarm.org/os/ArchLinuxARM-am33x-latest.tar.gz | ||
| + | mkdir root | ||
| + | mount /dev/sdX2 root | ||
| + | tar -xf ArchLinuxARM-am33x-latest.tar.gz -C root | ||
| + | umount root | ||
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| + | Insert the card into the system and apply power while holding down the boot selection switch located on the top of the board near where the micro SD card plugged in (labelled S2). You only need to hold the switch while power is being applied. You can release it immediately after power is applied. This will tell the board to boot from SD instead of eMMC. After the system is booted, you can SSH to the IP that gets assigned and login with the user/pass: root/root. | ||