Hi, Yesterday I prepared an USB stick with the recent version of the Arch Linux installation medium (Release 2025-04-01). This is about some error entries in the system journal, which I encountered during copying this ISO image over. The respective transcripts are provided inline, as well as attached in the form of plain text files. I used initially $ sudo cp <ISO> /dev/sda. After having finished that process, I spotted some error log entries in the system journal: Apr 20 15:30:25 T470p sudo[21475]: friedrich : TTY=pts/2 ; PWD=/home/friedrich/(...) ; USER=root ; COMMAND=/usr/bin/cp archlinux-2025.04.01-x86_64.iso /dev/sda Apr 20 15:30:25 T470p sudo[21475]: pam_unix(sudo:session): session opened for user root(uid=0) by friedrich(uid=1000) Apr 20 15:33:10 T470p systemd[1]: systemd-udevd.service: Watchdog timeout (limit 3min)! Apr 20 15:33:10 T470p systemd[1]: systemd-udevd.service: Killing process 359 (systemd-udevd) with signal SIGABRT. Apr 20 15:34:40 T470p systemd[1]: systemd-udevd.service: State 'stop-watchdog' timed out. Killing. Apr 20 15:34:40 T470p systemd[1]: systemd-udevd.service: Killing process 359 (systemd-udevd) with signal SIGKILL. Apr 20 15:36:10 T470p systemd[1]: systemd-udevd.service: Processes still around after SIGKILL. Ignoring. Apr 20 15:37:38 T470p kernel: sda: sda1 sda2 Apr 20 15:37:38 T470p sudo[21475]: pam_unix(sudo:session): session closed for user root Apr 20 15:37:38 T470p systemd[1]: systemd-udevd.service: Main process exited, code=killed, status=9/KILL Apr 20 15:37:38 T470p systemd[1]: systemd-udevd.service: Failed with result 'watchdog'. Apr 20 15:37:38 T470p systemd[1]: systemd-udevd.service: Consumed 4.845s CPU time, 51.6M memory peak. Apr 20 15:37:38 T470p systemd[1]: systemd-udevd.service: Scheduled restart job, restart counter is at 1. Apr 20 15:37:38 T470p systemd[1]: Starting Rule-based Manager for Device Events and Files... Apr 20 15:37:39 T470p systemd-udevd[21582]: Using default interface naming scheme 'v257'. Apr 20 15:37:39 T470p systemd[1]: Started Rule-based Manager for Device Events and Files. Apr 20 15:38:19 T470p kernel: usb 1-1: USB disconnect, device number 7 Because I had doubts about the integrity of the thus prepared USB stick, I repeated the process, this time using $ su - and # dd if=<ISO> of=/dev/sda bs=8M. Here, I encountered similar logs: Apr 20 15:38:53 T470p kernel: sda: sda1 sda2 Apr 20 15:38:53 T470p kernel: sd 0:0:0:0: [sda] Attached SCSI removable disk Apr 20 15:39:07 T470p su[21650]: (to root) friedrich on pts/2 Apr 20 15:39:07 T470p su[21650]: pam_unix(su:session): session opened for user root(uid=0) by friedrich(uid=1000) Apr 20 15:44:05 T470p systemd[1]: systemd-udevd.service: Watchdog timeout (limit 3min)! Apr 20 15:44:05 T470p systemd[1]: systemd-udevd.service: Killing process 21582 (systemd-udevd) with signal SIGABRT. Apr 20 15:45:35 T470p systemd[1]: systemd-udevd.service: State 'stop-watchdog' timed out. Killing. Apr 20 15:45:35 T470p systemd[1]: systemd-udevd.service: Killing process 21582 (systemd-udevd) with signal SIGKILL. Apr 20 15:47:05 T470p systemd[1]: systemd-udevd.service: Processes still around after SIGKILL. Ignoring. Apr 20 15:48:35 T470p systemd[1]: systemd-udevd.service: State 'final-sigterm' timed out. Killing. Apr 20 15:48:35 T470p systemd[1]: systemd-udevd.service: Killing process 21582 (systemd-udevd) with signal SIGKILL. Apr 20 15:48:56 T470p kernel: sda: sda1 sda2 Apr 20 15:48:56 T470p systemd[1]: systemd-udevd.service: Main process exited, code=killed, status=9/KILL Apr 20 15:48:56 T470p systemd[1]: systemd-udevd.service: Failed with result 'watchdog'. Apr 20 15:48:56 T470p systemd[1]: systemd-udevd.service: Consumed 1.101s CPU time, 7.4M memory peak. Apr 20 15:48:56 T470p systemd[1]: systemd-udevd.service: Scheduled restart job, restart counter is at 2. Apr 20 15:48:56 T470p systemd[1]: Starting Rule-based Manager for Device Events and Files... Apr 20 15:48:56 T470p systemd-udevd[21808]: Using default interface naming scheme 'v257'. Apr 20 15:48:56 T470p systemd[1]: Started Rule-based Manager for Device Events and Files. Apr 20 15:49:13 T470p kernel: usb 1-1: USB disconnect, device number 8 In the second run, where I kept an eye on the journal, I noticed that the error entries were logged a few minutes *before* the copying process completed. There were no errors reported by both of these directly. The pen drive is booting and working just fine. However, I felt this behaviour being worth it to be reported. Maybe someone else can make sense of it. Best, Friedrich