How do I report a kernel panic occuring on install media?

I'm trying to boot OpenBSD 7.0 i386 image (sha256: 2423307414df1800537063b3cafd9ae788b46711074b7f94d855c8a3de622f51) from a USB flash drive on HP Mini, Intel Atom N2600 1.60 GHz machine. Before I could install, unfortunately I'm facing a kernel panic. It shows on screen:

cpu0 at mainbus0: apid 0 (boot processor)
cpu0: Intel(R) Atom(TM) CPU N2600 @ 1.60 GHz ("GenuineIntel" 686-class) 1.60 GHz, 06-36-01
cpu0: FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,DTES64,MWAIT,DS-CPL,EST,TM2,SSSE3,xTPR,PDCM,MOVBE,NXE,LAHF,PERF,ITSC,SENSOR,ARAT,MELTDOWN
cpu0: apic clock running at 99MHz
cpu0: mwait min=64 max=64. C-substates=0.2.2.0.2.0.3, IBE
cpu at mainbus0: not configured
cpu at mainbus0: not configured
cpu at mainbus0: not configured
ioapic0 at mainbus0: apid 4 pa 0xfec00000, version 20, 24 pins, remapped
acpiprt0 at acpi0: bus 0 (PCI0)
acpiprt0 at acpi0: bus 3 (PCI1)
acpiprt0 at acpi0: bus 1 (RP01)
acpiprt0 at acpi0: bus 2 (RP02)
acpiec0 at acpi0
Could not convert 1 to 0

panic: aml_die aml_convert:2095

The operating system has halted.
Please press any key to reboot.

Almost any key or key combination I press gets the machine to reboot.

It runs Windows 7 and Debian just fine. In fact I rebooted on to the media from a Debian install which is running without any hardware complaints. But OpenBSD seems to have this issue.

I have never submitted a kernel panic report and have no idea how to submit one.

I have read <https://www.openbsd.org/ddb.html> and it says to send a traceback. But I don't know how to. I tried entering these options at boot prompt:

boot> set db_console 1
boot> boot -d

Then when the above reboot message appears I tried pressing Ctrl+Alt+Esc and Ctrl+Alt+Delete. Ctrl+Alt+Esc resulted in a reboot and Ctrl+Alt+Delete did nothing. So no ddb prompt came. Since this is install media (I wasn't able to install it due to this issue) I can't try other ways like sysctl(8).

I tried searching the web for ways of entering ddb, but I didn't find anything specific to install media, let alone entering ddb on a normal machine. man pages gave me some hint but I couldn't get any further than what I tried.

So my question is, how do I collect the things required for a kernel panic report on this machine?