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Diffstat (limited to 'drivers/block/Kconfig')
| -rw-r--r-- | drivers/block/Kconfig | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/block/Kconfig b/drivers/block/Kconfig index 0d1d2133d9b..c3909743c48 100644 --- a/drivers/block/Kconfig +++ b/drivers/block/Kconfig @@ -433,4 +433,28 @@ config VIRTIO_BLK This is the virtual block driver for virtio. It can be used with lguest or QEMU based VMMs (like KVM or Xen). Say Y or M. +config BLK_DEV_HD + bool "Old hard disk (MFM/RLL/IDE) driver" + depends on HAVE_IDE + depends on !ARM || ARCH_RPC || ARCH_SHARK || BROKEN + help + There are two drivers for MFM/RLL/IDE hard disks. Most people use + the newer enhanced driver, but this old one is still around for two + reasons. Some older systems have strange timing problems and seem to + work only with the old driver (which itself does not work with some + newer systems). The other reason is that the old driver is smaller, + since it lacks the enhanced functionality of the new one. This makes + it a good choice for systems with very tight memory restrictions, or + for systems with only older MFM/RLL/ESDI drives. Choosing the old + driver can save 13 KB or so of kernel memory. + + If you want to use this driver together with the new one you have + to use "hda=noprobe hdb=noprobe" kernel parameters to prevent the new + driver from probing the primary interface. + + If you are unsure, then just choose the Enhanced IDE/MFM/RLL driver + instead of this one. For more detailed information, read the + Disk-HOWTO, available from + <http://www.tldp.org/docs.html#howto>. + endif # BLK_DEV |