--- isolinux.asm
+++ isolinux.asm
@@ -62,9 +62,9 @@
 ;
 ; Note: this structure can be added to, but it must 
 ;
-%define vk_power	5		; log2(max number of vkernels)
+%define vk_power	6		; log2(max number of vkernels)
 %define	max_vk		(1 << vk_power)	; Maximum number of vkernels
-%define vk_shift	(15-vk_power)	; Number of bits to shift
+%define vk_shift	(16-vk_power)	; Number of bits to shift
 %define vk_size		(1 << vk_shift)	; Size of a vkernel buffer
 
 		struc vkernel
@@ -78,7 +78,7 @@
 		endstruc
 
 %ifndef DEPEND
-%if (vk_end > vk_size) || (vk_size*max_vk > 8000h)
+%if (vk_end > vk_size) || (vk_size*max_vk > 65536)
 %error "Too many vkernels defined, reduce vk_power"
 %endif
 %endif
@@ -88,7 +88,7 @@
 ; 0000h - main code/data segment (and BIOS segment)
 ;
 real_mode_seg	equ 7000h
-vk_seg          equ 6800h		; Virtual kernels
+vk_seg          equ 6000h		; Virtual kernels
 xfer_buf_seg	equ 8000h		; Bounce buffer for I/O to high mem
 comboot_seg	equ real_mode_seg	; COMBOOT image loading zone
 
--- ldlinux.asm
+++ ldlinux.asm
@@ -66,9 +66,9 @@
 ;
 ; Note: this structure can be added to, but it must 
 ;
-%define vk_power	6		; log2(max number of vkernels)
+%define vk_power	7		; log2(max number of vkernels)
 %define	max_vk		(1 << vk_power)	; Maximum number of vkernels
-%define vk_shift	(15-vk_power)	; Number of bits to shift
+%define vk_shift	(16-vk_power)	; Number of bits to shift
 %define vk_size		(1 << vk_shift)	; Size of a vkernel buffer
 
 		struc vkernel
@@ -82,7 +82,7 @@
 		endstruc
 
 %ifndef DEPEND
-%if (vk_end > vk_size) || (vk_size*max_vk > 8000h)
+%if (vk_end > vk_size) || (vk_size*max_vk > 65536)
 %error "Too many vkernels defined, reduce vk_power"
 %endif
 %endif
@@ -95,8 +95,8 @@
 ; 0000h - main code/data segment (and BIOS segment)
 ;
 real_mode_seg	equ 7000h
-fat_seg		equ 4800h		; up to 128K area for FAT (2x64K)
-vk_seg          equ 6800h		; Virtual kernels
+fat_seg		equ 4000h		; up to 128K area for FAT (2x64K)
+vk_seg          equ 6000h		; Virtual kernels
 xfer_buf_seg	equ 8000h		; Bounce buffer for I/O to high mem
 comboot_seg	equ real_mode_seg	; COMBOOT image loading zone