Please always post your garuda-inxi when requesting help here. It helps shorten down waiting time asking for information that can be provided by one single command.
You can post this from Live ISO as well.
Are you on an apple power pc? Other wise the platform it’s trying to install on is wrong do this,
From your live ISO
- chroot into your system with,
garuda-chroot -a
If this fails, happens when you are using ventoy then follow this post for instructions on manual chroot. → How to chroot Garuda Linux
- then install grub (if you are on x86 arch. with UEFI boot loader, you haven’t provided us with
garuda-inxiso I can only guess here),
grub-install --target=x86_64-efi --efi-directory=/boot/efi --bootloader-id=garuda --recheck
- and then,
update-grub
- then exit chroot with
exit
and reboot into garuda (set it as default from your UEFI menu). If everything else was installed successfully you should be booting into garuda.