If the situation isn't going to change anytime soon then I have some diffs for INSTALL.i386 and INSTALL.amd64. The latter has not specified disk requirements, I guess since anyone who owns an amd64 system will very likely be using a disk big enough for X, so I figured that the same would apply to any user of an i386 system that meets the proposed minimum RAM. These are based on the 2021-09-21 snapshot versions.
--- INSTALL.i386.txt Wed Sep 22 16:52:38 2021 +++ INSTALL.i386_new Wed Sep 22 16:51:17 2021 @@ -201,10 +201,7 @@ OpenBSD/i386 7.0 supports most SMP (Symmetrical MultiP systems. To support SMP operation, a separate SMP kernel (bsd.mp) is included with the installation file sets. -The minimal configuration to install the system is 32MB of RAM and -at least 250MB of disk space to accommodate the `base' set. -To install the entire system, at least 600MB of disk are required, -and to run X or compile the system, more RAM is recommended. +The minimal configuration to install the system is 512MB of RAM. Please refer to the website for a full list of supported hardware: https://www.openbsd.org/i386.html --- INSTALL.amd64.txt Wed Sep 22 16:52:48 2021 +++ INSTALL.amd64_new Wed Sep 22 16:51:12 2021 @@ -202,6 +202,8 @@ is included with the installation file sets. OpenBSD/amd64 7.0 supports both UEFI/GPT booting and BIOS/MBR booting. +The minimal configuration to install the system is 512MB of RAM. + Please refer to the website for a full list of supported hardware. https://www.openbsd.org/amd64.html Patrick Harper