To make the Windows boot loader + operating system use LBA mode, just set the LBA flag on all FAT partitions section 2.4.16 set. You should have no problems. If you do have problems booting Windows, then reinstalling the Windows boot loader will fix it section 4.3 Legacy Microsoft Operating System Bootloaders.
Linux doesn't use the BIOS for IO. However, the boot loader (LILO or GRUB) may. GRUB automatically uses LBA, if it is available. LILO requires the "linear" or "lba32" option. So, if LILO still boots after changing `/etc/lilo.conf' reinstalling with @command{/sbin/lilo}, then everything's done! See section 4.1 LILO: a bootloader for the Linux kernel. (If you have problems, just revert back to CHS, by removing "linear" or "lba32", and reinstalling lilo from a boot disk.)
Now that you're using LBA, read on...
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