My floppy is OK. I tested it in this mobo with vendor BIOS and also in other PC and working good. After apply incremental patch still Disk I/O error: 08.264: Booting from Floppy... 08.264: enter handle_13: 08.264: a=00000201 b=00000000 c=00000001 d=00000000 ds=0000 es=07c0 ss=dd80 08.264: si=00000000 di=00000000 bp=00000000 sp=0000fab8 cs=f000 ip=c9a2 f=0202 08.264: disk_op d=0x000f4500 lba=0 buf=0x00007c00 count=1 cmd=2 08.264: check_recal_drive 0 08.264: floppy_drive_recal 0 08.264: handle_0e 08.264: floppy_pio 08.264: floppy_pio 08.300: floppy_pio 08.682: handle_0e 08.682: floppy_pio 08.682: floppy_media_sense 0 ftype=4 08.682: floppy_drive_readid 0 rate=0 head=0 08.687: floppy_pio 08.689: handle_0e 08.689: floppy_media_sense finish 0 data_rate=0 fms=17 stype=4 08.690: floppy_pio 08.825: handle_0e 08.825: Booting from 0000:7c00 08.825: enter handle_13: 08.825: a=00000201 b=00000700 c=00000002 d=00000100 ds=0000 es=0000 ss=dd80 08.825: si=00007bd2 di=00000700 bp=00007c00 sp=0000fab8 cs=0000 ip=7d6e f=0002 08.825: disk_op d=0x000f4500 lba=19 buf=0x00000700 count=1 cmd=2 08.825: floppy_pio 09.008: handle_0e 09.008: enter handle_13: 09.008: a=00000201 b=00000700 c=00000010 d=00000100 ds=0000 es=0000 ss=dd80 09.008: si=00007bd2 di=00000002 bp=00007c00 sp=0000fab8 cs=0000 ip=7d6e f=0002 09.008: disk_op d=0x000f4500 lba=33 buf=0x00000700 count=1 cmd=2 09.014: floppy_pio 09.138: handle_0e 09.138: enter handle_13: 09.138: a=00000201 b=00000900 c=00000011 d=00000100 ds=0000 es=0000 ss=dd80 09.138: si=00007bd2 di=00000002 bp=00007c00 sp=0000fab8 cs=0000 ip=7d6e f=0006 09.149: disk_op d=0x000f4500 lba=34 buf=0x00000900 count=1 cmd=2 09.149: floppy_pio 09.335: handle_0e 09.335: enter handle_13: 09.335: a=00000201 b=00000b00 c=00000012 d=00000100 ds=0000 es=0000 ss=dd80 09.335: si=00007bd2 di=00000002 bp=00007c00 sp=0000fab8 cs=0000 ip=7d6e f=0006 09.335: disk_op d=0x000f4500 lba=35 buf=0x00000b00 count=1 cmd=2 09.341: floppy_pio 09.721: handle_0e 09.721: floppy error: 40 04 10 01 00 00 02 09.721: invalid basic_access:96: 09.721: a=00000200 b=00000b00 c=00000012 d=00000100 ds=0000 es=0000 ss=dd80 09.722: si=00007bd2 di=00000002 bp=00007c00 sp=0000fab8 cs=0000 ip=7d6e f=0006 ================================================================================= I write how I build coreboot with SeaBIOS:
a.. make menuconfig and set payload SeaBIOS to master b.. cd /coreboot/build c.. rm -R seabios d.. git clone git://git.seabios.org/seabios.git seabios e.. apply patches to src/config.h and src/hw/floppy.c f.. change DEBUG_LEVEL default 1 to 8 in src/Kconfig g.. cd ../.. h.. make i.. ./build/seabios/scripts/encodeint.py floppy0 4 j.. ./build/cbfstool build/coreboot.rom add -f floppy0 -n etc/floppy0 -t raw