Image file for X86 question

I can't find the difference between this 3 images for X86, any knowledge would be appreciated.

[https://downloads.openwrt.org/releases/18.06.1/targets/x86/generic/]

Screenshot from 2020-11-29 15-17-27

Neither of those.

You basically have the option to decide between:

  • combined-ext4.img.gz
  • combined-squashfs.img.gz

Unless you have specific reasons to prefer the ext4 variant, the squashfs one would be recommended, as it allows factory resetting/ recovery (the ext4 image is completely writable, if you break it, it stays broken without a failsafe mode).

The rootfs images are just that, the split out rootfs (without kernel or bootloader), while there are use-cases for these, they're not usable as-is.

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https://openwrt.org/docs/guide-user/virtualization/qemu#preparation

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