on HaikuOS

• on the mail_daemon

• when in QEMU/KVM virt-manager (an outdated installation like from NixOS nixpkgs) faced with a choice between presets for Nightly and for r1beta1 but installing r1beta2, choosing the Nightly preset has been advised to me by imAlwaysLivid
• many of the services can be managed with launch_roster, see its --help
• another allegedly neat repo to know is LOTE aka Haikuware.ru
• `lsof` counterpart is `fdinfo`, note `-d` `-D` `-f`
• mounting -o {readonly|ro},remount succeeded, however not making it readonly, and creating a redundant mount. unmount acted first on the newer mount. mount -ro -o remount did the same but readonly on the newer mount.
  

building system components separately

to build a system component like for example add-ons/mail_daemon but not the whole Haiku, use jam -q mail_daemon

I'm going to add it to boot.ini

http://web.archive.org/web/20201031035448/http://besly.de/index.php/de/system/systemstartup/haiku-im-windows-bootmenue-einfuegen

The Linux boot loader first 512 bytes, presumably it is your bootsect.lnx, should be stored inside the directory where boot.ini is stored. [...] To boot a Linux WIndows must have the first 512 bytes of the Linux boot loader "available" inside its own filing system and in the same drive that stores its own NTLDR boot loader, so that the NTLDR can be replaced by the Linux boot loader to dual boot. https://www.techguy.org/threads/linux-and-the-boot-ini.483042/

https://arstechnica.com/civis/threads/dual-boot-win2k-and-beos-possible-how.1058272/