diff -up grub-0.97/stage2/disk_io.c.original grub-0.97/stage2/disk_io.c
--- grub-0.97/stage2/disk_io.c.original	2012-06-06 18:21:26.231605730 +0900
+++ grub-0.97/stage2/disk_io.c	2012-06-06 18:22:04.982002533 +0900
@@ -400,7 +400,7 @@ sane_partition (void)
     return 1;
   
   if (!(current_partition & 0xFF000000uL)
-      && ((current_drive & 0xFFFFFF7F) < 8
+      && ((current_drive & 0xFFFFFF7F) < MAX_HD_NUM
 	  || current_drive == cdrom_drive)
       && (current_partition & 0xFF) == 0xFF
       && ((current_partition & 0xFF00) == 0xFF00
diff -up grub-0.97/stage2/shared.h.original grub-0.97/stage2/shared.h
--- grub-0.97/stage2/shared.h.original	2012-06-06 18:20:53.999229772 +0900
+++ grub-0.97/stage2/shared.h	2012-06-06 18:20:57.642151483 +0900
@@ -79,6 +79,8 @@ extern void *grub_scratch_mem;
 #define BIOSDISK_FLAG_LBA_EXTENSION	0x1
 #define BIOSDISK_FLAG_CDROM		0x2
 
+#define MAX_HD_NUM      128
+
 /*
  *  This is the filesystem (not raw device) buffer.
  *  It is 32K in size, do not overrun!