How to install archlinux aarch64 on rpi4?

[graysky]

I do not know about external SSDs. I only use it with the onboard microSD and it is fine.

[CaptainRage]

Thanks for the feedback. The problem I had was that aarch64 wouldn't boot with the /boot partition on a microSD card and the / partition on an external SSD. Apparently there is a problem with USB devices getting detected early on in aarch64 on Raspberry Pi 4. Having the /boot partition on a microSD card and the root partition on an external USB drive works on the armv7 version without any problems.

[kernelpanic]

I have managed to get this working this evening by following this thread:
https://archlinuxarm.org/forum/viewtopic.php?f=65&t=14672

I'm using the microSD card as /boot and a USB SSD as /
1. edit /etc/mkinitcpio.conf and add pcie_brcmstb to MODULES
i.e MODULES=(pcie_brcmstb)
2. run mkinitcpio -P
3. edit /boot/boot.txt and add the new root partition to root=
e.g. root=/dev/sda1
4. run ./mkscr

The problem I have now is that the ethernet rarely works, I have to reboot several times before It does...

[Czar]

You can try setting delay to systemd-networkd service:
viewtopic.php?p=64514#p64514

[kernelpanic]

@Czar: Perfect, thank-you, that works like a charm.

[graysky]

@Schlunze - Please don't double post. You already asked that question in a thread elsewhere on these boards.

[omarmohamed]

@graysky After following the instructions to install aarch64 I got the output mentioned in the question on the serial console, I don't know if the problem was in uboot or the kernel but after uboot printed 'starting kernel' there was '�f��~����`f��~����f...........'
@CaptainRage I'm using an sdcard not an external storage, even I think usb doesn't work on boot for me either
$this->bbcode_second_pass_code('', '
starting USB...
No working controllers found
')
Anyway If you haven't installed arch yet you may try this (I didn't try myself):
https://unix.stackexchange.com/questions/41889/how-can-i-chroot-into-a-filesystem-with-a-different-architechture