I have a Samsung Galaxy Book4 Edge with a Snapdragon X Elite X1E84100 processor. The Bios configuration is controlled through the Aptio Setup Utility. I'm trying to install OpenBSD 7.6 on the machine.
I completed the following steps using an install of OpenBSD 7.6 running in VMware running on a MacBook M1 downloaded the OpenBSD 7.6 ARM64 install76.img and the SHA256 file. ran the signify -Cp command to verify the signature. ran the dd command to create the create the installation media on a usb drive I turned off Secure Boot Control to be able to boot into the USB. I inserted the usb drive in the Samsung Book4, booted the machine and accessed the boot menu. An entry for UEFI USB ScanDisk 3.2Gen 1 appeared in the boot sequence. I selected that and it started the install process. I continued through a standard install. The sd0 disk was available and I selected that. The install displayed details of the partitions it would create. The first partition as Win95 FAT32L, set to bootable, and the fourth partition as the OpenBSD partition. The geometry was 15557/255/63 the Offset was 0 and the Signature was 0xAA55. I selected the whole disk. The install process created the msdos partition and the OpenBSD partition. I typed in the passphrase to encrypt the disk and got a message that sd2 at scsibus2 was configured as the root disk and that the "MBR has invalid signature: not showing it". I continued, selecting the whole disk of sd2. The auto-layout of sd2 was presented, which I accepted, and continued to install the file sets and finish the installation. When I rebooted, the machine did not boot into OpenBSD. A text message appeared stating "all boot options are tried" and instructing to "press F8 to recover factory image" Pressing F8 just restarted the machine and returns to the same screen. With I reboot and hit F10, I can access the Select Boot Device menu with entries for Enter Microsoft Recovery, Enter Setup and Enter QR mode. There is no entry to OpenBSD. When access Enter Setup I see there are no entries in Boot Device Priorities. Selecting Microsoft Recovery just takes me back to the Bios Configuration menu, I expect because the Window recovery files were overwritten when I installed OpenBSD. if I insert the USB with the install files, start the machine and hit F10, the Select Boot Device menu displays an entry of the USB. When I select the USB, it displays the text screen instructing me to press F87 to recover the factory image and t does not start the install process. If I don't hit F10, the machine will boot into the install process and I get the same result that the MBR signature is invalid. I've worked through this multiple times with the same results. Other items that may be important - The initial message of the install process says that disks sd0, set to bootable, sd1, sd2 and sr0 are available. sd1 is the USB. If I drop out to the shell and run the sysctl it returns the following information - kern.osrelease=7.6 hw.machine=arm64 hw.model=Qualcomm Oryon r2p1 hw..product=Galaxy Book4 Edge hw.disknames=sd0:42cf3c16739680b6, rd0:ec5acec2840e2f75, sd1:05c5fc3ddce93a48 hw.ncpufound=12 machdep.compatible=openbsd,acpi In Summary, MBR signature is shown to be invalid during the install process the boot sequence in the bios is empty. the boot sequence does not recognize OpenBSD and I can't boot OpenBSD. I'd appreciate any insight that might solve this problem Thanks, Jim Sent with [Proton Mail](https://proton.me/mail/home) secure email.
