add austrumi support.(issue #637)

IMG/cpio/ventoy/ventoy_chain.sh

@@ -309,6 +309,10 @@ ventoy_get_os_type() {
         echo 'primeos'; return
     fi
     
+    if $GREP -q 'austrumi' /proc/version; then
+        echo 'austrumi'; return
+    fi
+    
     echo "default"
 }
 

INSTALL/grub/grub.cfg

@@ -277,7 +277,12 @@ function distro_specify_initrd_file_phase2 {
         vt_linux_specify_initrd_file /install.amd/gtk/initrd.gz
     elif [ -f (loop)/boot/grub/kernels.cfg ]; then
         vt_linux_parse_initrd_grub  file  (loop)/boot/grub/kernels.cfg
-
+    elif [ -f (loop)/austrumi/initrd.gz ]; then
+        vt_linux_specify_initrd_file /austrumi/initrd.gz
+        if [ -f (loop)/EFI/BOOT/bootx64.efi ]; then
+            vt_cpio_busybox64 "64h"
+        fi
+        
     fi
 }