Hello,the new installboot(8) wipes the disk label on a 4k-byte/sector drive - a valid disk label becomes binary zeros after
/usr/sbin/installboot -r /mnt sd4
To be more precise, the "boot sector" (the first 512 bytes) gets installed, but the disk label (the next 512 bytes) is overwritten with zeros.
OpenBSD 5.5-current (RAMDISK_CD) #48: Sun Apr 20 03:50:37 MDT 2014
dera...@i386.openbsd.org:/usr/src/sys/arch/i386/compile/RAMDISK_CD
Regards,
David
