Solution : Garuda Installation failed, bootloader installation error - #25 by FOUR_7777
Follow steps 6-9 in chroot from live usb . step 8 may give error ( ignore it) . Then after reboot do step 1-5 ( using chroot from live usb ) . Then do step 8 and 9 using ( chroot ) . If garuda doesn’t boot reinstall it . This time you wont get any error .
This worked for me .