UEFI booting. pi3p16s154 is nvme0n1p16 ext4 root filesystem LABEL. crypto is not employed anywhere on the PC. 5.14.21-150400.19 kernel boots normally. 5.14.21-150400.22 kernel is not recognizing USB stick insertion, so there's no way I know to get /run/initramfs/rdsosreport.txt onto a stick for susepasting, and susepaste isn't in the emergency shell. Neither does the shell include grep. I rebuilt initrd with add_dracutmodules+=debug but still no susepaste or grep, or lsblk, or fdisk, or improvement. Selected excerpts from rdsosreport.txt: systemd-modules-load.service: Failed with result 'exit-code'. Failed to start Load Kernel Modules. systemd-modules-load...Failed to look up module alias 'sg': Function not implemented condition check resulted in dracut pre-trigger hook being skipped dracut-initqueue...Warning: dracut-initqueue: timeout, still waiting for following initqueue hooks: /lib/dracut/hooks/initqueue/finished/devexists-/dev/disk/by-label-pi3p16s154.sh "if ! grep After=remote-fs-pre.target /run/systemd/generator/systemd-cryptsetup@*.service 2>/dev/null; then [ -e " /dev/disk/by-label/pi3p16s154" ] ... Warning: dracut-initqueue: starting timeout scripts Warning: Could not boot. systemd[1]: Starting Dracut Emergency Shell.... Is there anything above that suggests why the .22 initrd failed to enable nvme / filesystem to be found? https://paste.opensuse.org/57952814 is output from lsinitrd /boot/initrd. I did essentially the same dup to 15.4 a week ago on another PC with same Intel b250 chipset, also UEFI & nvme, and no trouble. I copied each of 3 .22 initrds from the first PC to the second. The first boots normally. The second not, initially stopping at starting dracut initqueue hook, winding up in emergency shell. So did the #3 initrd. The initrd from the update last week copied to today's also fails in same manner. The big difference between the two PCs: the problem PC contains 2 HDDs with multiple partitions, about half of which comprise several mdraid devices, none of which have anything to do with booting the problem 15.4 installation. -- Evolution as taught in public schools is, like religion, based on faith, not based on science. Team OS/2 ** Reg. Linux User #211409 ** a11y rocks! Felix Miata