I'm assuming you're talking about the standard linux console, not a graphical terminal inside Xorg or Wayland. That being the case:
With extlinux bootloader
Alpine defaults to using extlinux when installed on a machine that's booted in BIOS mode.
You can set the terminal size by editing
nomodeset from the line starting
- Add a
video=... line at the end of the
APPEND line, with the resolution you want. For example,
With grub bootloader
Alpine defaults to grub when installed on a machine booted in EFI mode.
- Find the
GRUB_CMDLINE_LINUX_DEFAULT line, and remove
Add these two lines:
grub-mkconfig -o /boot/grub/grub.cfg as root (or use sudo if you have it set up).
The virtualbox guest additions packages only provide support for Xorg video, and a few other things like shared folders.