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@@ -433,4 +433,28 @@ config VIRTIO_BLK
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This is the virtual block driver for virtio. It can be used with
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lguest or QEMU based VMMs (like KVM or Xen). Say Y or M.
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+config BLK_DEV_HD
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+ bool "Old hard disk (MFM/RLL/IDE) driver"
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+ depends on HAVE_IDE
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+ depends on !ARM || ARCH_RPC || ARCH_SHARK || BROKEN
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+ help
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+ There are two drivers for MFM/RLL/IDE hard disks. Most people use
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+ the newer enhanced driver, but this old one is still around for two
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+ reasons. Some older systems have strange timing problems and seem to
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+ work only with the old driver (which itself does not work with some
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+ newer systems). The other reason is that the old driver is smaller,
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+ since it lacks the enhanced functionality of the new one. This makes
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+ it a good choice for systems with very tight memory restrictions, or
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+ for systems with only older MFM/RLL/ESDI drives. Choosing the old
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+ driver can save 13 KB or so of kernel memory.
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+
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+ If you want to use this driver together with the new one you have
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+ to use "hda=noprobe hdb=noprobe" kernel parameters to prevent the new
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+ driver from probing the primary interface.
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+
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+ If you are unsure, then just choose the Enhanced IDE/MFM/RLL driver
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+ instead of this one. For more detailed information, read the
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+ Disk-HOWTO, available from
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+ <http://www.tldp.org/docs.html#howto>.
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+
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endif # BLK_DEV
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