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The Arch wiki installation guide lists that more then a minimum of 512 MiB RAM is needed to boot the live installer.

Other users noted that ArchISO 202005 breaks with 512MB of RAM.

I can confirm that iso 202002 still boots OK with 512 MiB of memory. Release 202003 fails back to interactive rootfs prompt with logged errors:

Initramfs unpacking failed: write error

and

/dev/disk/by-label/ARCH_202003 device did not show up after 30 seconds.

Which minimum amount of memory is needed to boot the Arch Linux live iso?

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740 MiB

Trial and error in a VM with 4 MiB increments, it turns out that the minimum amount of RAM for "current" archlinux-2022.09.03-x86_64 is 740 MB

History

  • 720 MiB of RAM is required for the old archlinux-2021.07.01-x86_64.
  • 656 MiB of RAM is required for the old archlinux-2021.02.01-x86_64.
  • 520 MiB for the first release (archlinux-2020.03.01-x86_64.iso) that did no longer boot with 512 MiB.
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