Sorry about that, now it should be fixed.

After latest commit 473529e4db8 the systemrescue.conf's checksum needs to be updated.

Sorry for the late reply, I must have overlooked the notification email.

I think I know what the problem is:

On my system, my EFI partition has the label 'EFI' and is mounted to /boot. So the airootfs.sys has path /boot/systemrescue/x86_64/airootfs.sfs.

In the provided systemrescue.conf, I set options archisolabel=EFI archisobasedir=systemrescue. That then leads to /run/archiso/bootmnt/systemrescue/x86_64/airootfs.sfs during starting of Systemrescue.

I guess that is where something goes wrong, because your setup is probably slightly different. What does your boot setup look like? My bootctl output for the systemrescue entry is:

         type: Boot Loader Specification Type #1 (.conf)
        title: SystemRescue 12.xx
           id: systemrescue.conf
       source: /boot//loader/entries/systemrescue.conf (on the EFI System Partition)
     sort-key: systemrescue
        linux: /boot//systemrescue/vmlinuz
       initrd: /boot//systemrescue/intel_ucode.img
               /boot//systemrescue/amd_ucode.img
               /boot//systemrescue/sysresccd.img
      options: archisolabel=EFI archisobasedir=systemrescue iomem=relaxed copytoram net.ifnames=0

Using this, I get an error when booting that it can’t find airootfs.sfs (“cp: can't stat '/run/archiso/bootmnt/systemrescue/x86_64/airootfs.sfs': No such file or directory”). I tried copying the file to the ./systemrescue directory and I’ve tried specifically including it as part of the initrd, but neither of those approaches worked. Any ideas?