linuxppcdev@qbjnet.com writes:

quoted

I've never had trouble making a boot disk for 2.4.x kernels. Using the
current bitkeeper 2.4 and 2.6 however, the 2.4 works fine and the 2.6
reads a few sectors and goes to the System Maint disk insert dialog.
Tried different floppies, etc.

There is a bug in arch/ppc/boot/utils/mkprep.c in 2.6.  This patch
should fix it.  Tom, how about sending this to Linus and Andrew?

diff -urN linux-2.5/arch/ppc/boot/utils/mkprep.c linux-2.4/arch/ppc/boot/utils/mkprep.c

--- linux-2.5/arch/ppc/boot/utils/mkprep.c	2004-01-03 11:27:07.000000000 +1100
+++ linux-2.4/arch/ppc/boot/utils/mkprep.c	2003-12-31 09:32:23.000000000 +1100

@@ -219,6 +219,8 @@
   pe.number_of_sectors = cpu_to_le32(2*18*80-1);
 #endif /* __i386__ */

+  memcpy(&block[0x1BE],&pe,sizeof(pe));
+
   write( out, block, sizeof(block) );
   write( out, entry, sizeof(*entry) );
   write( out, length, sizeof(*length) );