If you say Y here, and you actually want to reverse the device scan	  order as explained above, you also need to issue the kernel command	  line option "ide=reverse". (Try "man bootparam" or see the	  documentation of your boot loader (lilo or loadlin) about how to	  pass options to the kernel at boot time.)	  Note that, if you do this, the order of the hd* devices will be	  rearranged which may require modification of fstab and other files.	  If in doubt, say N.config BLK_DEV_GENERIC	tristate "Generic PCI IDE Chipset Support"	depends on BLK_DEV_IDEPCIconfig BLK_DEV_OPTI621	tristate "OPTi 82C621 chipset enhanced support (EXPERIMENTAL)"	depends on PCI && BLK_DEV_IDEPCI && EXPERIMENTAL	help	  This is a driver for the OPTi 82C621 EIDE controller.	  Please read the comments at the top of <file:drivers/ide/pci/opti621.c>.config BLK_DEV_RZ1000	tristate "RZ1000 chipset bugfix/support"	depends on PCI && BLK_DEV_IDEPCI && X86	help	  The PC-Technologies RZ1000 IDE chip is used on many common 486 and	  Pentium motherboards, usually along with the "Neptune" chipset.	  Unfortunately, it has a rather nasty design flaw that can cause	  severe data corruption under many conditions. Say Y here to include	  code which automatically detects and corrects the problem under	  Linux. This may slow disk throughput by a few percent, but at least	  things will operate 100% reliably.config BLK_DEV_SL82C105	tristate "Winbond SL82c105 support"	depends on PCI && (PPC || ARM) && BLK_DEV_IDEPCI	help	  If you have a Winbond SL82c105 IDE controller, say Y here to enable	  special configuration for this chip. This is common on various CHRP	  motherboards, but could be used elsewhere. If in doubt, say Y.config BLK_DEV_IDEDMA_PCI	bool "Generic PCI bus-master DMA support"	depends on PCI && BLK_DEV_IDEPCI	---help---	  If your PCI system uses IDE drive(s) (as opposed to SCSI, say) and	  is capable of bus-master DMA operation (most Pentium PCI systems),	  you will want to say Y here to reduce CPU overhead. You can then use	  the "hdparm" utility to enable DMA for drives for which it was not	  enabled automatically. By default, DMA is not enabled automatically	  for these drives, but you can change that by saying Y to the	  following question "Use DMA by default when available". You can get	  the latest version of the hdparm utility from	  <ftp://ibiblio.org/pub/Linux/system/hardware/>.	  Read the comments at the beginning of <file:drivers/ide/ide-dma.c>	  and the file <file:Documentation/ide.txt> for more information.	  It is safe to say Y to this question.if BLK_DEV_IDEDMA_PCIconfig BLK_DEV_IDEDMA_FORCED	bool "Force enable legacy 2.0.X HOSTS to use DMA"	help	  This is an old piece of lost code from Linux 2.0 Kernels.	  Generally say N here.config IDEDMA_PCI_AUTO	bool "Use PCI DMA by default when available"	---help---	  Prior to kernel version 2.1.112, Linux used to automatically use	  DMA for IDE drives and chipsets which support it. Due to concerns	  about a couple of cases where buggy hardware may have caused damage,	  the default is now to NOT use DMA automatically. To revert to the	  previous behaviour, say Y to this question.	  If you suspect your hardware is at all flakey, say N here.	  Do NOT email the IDE kernel people regarding this issue!	  It is normally safe to answer Y to this question unless your	  motherboard uses a VIA VP2 chipset, in which case you should say N.config IDEDMA_ONLYDISK	bool "Enable DMA only for disks "	depends on IDEDMA_PCI_AUTO	help	  This is used if you know your ATAPI Devices are going to fail DMA	  Transfers.	  Generally say N here.config BLK_DEV_AEC62XX	tristate "AEC62XX chipset support"	help	  This driver adds explicit support for Acard AEC62xx (Artop ATP8xx)	  IDE controllers. This allows the kernel to change PIO, DMA and UDMA	  speeds and to configure the chip to optimum performance.config BLK_DEV_ALI15X3	tristate "ALI M15x3 chipset support"	help	  This driver ensures (U)DMA support for ALI 1533, 1543 and 1543C	  onboard chipsets.  It also tests for Simplex mode and enables	  normal dual channel support.	  If you say Y here, you also need to say Y to "Use DMA by default	  when available", above.  Please read the comments at the top of	  <file:drivers/ide/pci/alim15x3.c>.	  If unsure, say N.config WDC_ALI15X3	bool "ALI M15x3 WDC support (DANGEROUS)"	depends on BLK_DEV_ALI15X3	---help---	  This allows for UltraDMA support for WDC drives that ignore CRC	  checking. You are a fool for enabling this option, but there have	  been requests. DO NOT COMPLAIN IF YOUR DRIVE HAS FS CORRUPTION, IF	  YOU ENABLE THIS! No one will listen, just laugh for ignoring this	  SERIOUS WARNING.	  Using this option can allow WDC drives to run at ATA-4/5 transfer	  rates with only an ATA-2 support structure.	  SAY N!config BLK_DEV_AMD74XX	tristate "AMD and nVidia IDE support"	help	  This driver adds explicit support for AMD-7xx and AMD-8111 chips	  and also for the nVidia nForce chip.  This allows the kernel to	  change PIO, DMA and UDMA speeds and to configure the chip to	  optimum performance.config BLK_DEV_ATIIXP	tristate "ATI IXP chipset IDE support"	depends on X86	help	  This driver adds explicit support for ATI IXP chipset.	  This allows the kernel to change PIO, DMA and UDMA speeds	  and to configure the chip to optimum performance.	  Say Y here if you have an ATI IXP chipset IDE controller.config BLK_DEV_CMD64X	tristate "CMD64{3|6|8|9} chipset support"	help	  Say Y here if you have an IDE controller which uses any of these	  chipsets: CMD643, CMD646, or CMD648.config BLK_DEV_TRIFLEX	tristate "Compaq Triflex IDE support"	help	  Say Y here if you have a Compaq Triflex IDE controller, such	  as those commonly found on Compaq Pentium-Pro systemsconfig BLK_DEV_CY82C693	tristate "CY82C693 chipset support"	help	  This driver adds detection and support for the CY82C693 chipset	  used on Digital's PC-Alpha 164SX boards.	  If you say Y here, you need to say Y to "Use DMA by default	  when available" as well.config BLK_DEV_CS5520	tristate "Cyrix CS5510/20 MediaGX chipset support (VERY EXPERIMENTAL)"	depends on EXPERIMENTAL	help	  Include support for PIO tuning an virtual DMA on the Cyrix MediaGX 	  5510/5520 chipset. This will automatically be detected and	  configured if found.	  It is safe to say Y to this question.config BLK_DEV_CS5530	tristate "Cyrix/National Semiconductor CS5530 MediaGX chipset support"	help	  Include support for UDMA on the Cyrix MediaGX 5530 chipset. This	  will automatically be detected and configured if found.	  It is safe to say Y to this question.config BLK_DEV_HPT34X	tristate "HPT34X chipset support"	help	  This driver adds up to 4 more EIDE devices sharing a single	  interrupt. The HPT343 chipset in its current form is a non-bootable	  controller; the HPT345/HPT363 chipset is a bootable (needs BIOS FIX)	  PCI UDMA controllers. This driver requires dynamic tuning of the	  chipset during the ide-probe at boot time. It is reported to support	  DVD II drives, by the manufacturer.config HPT34X_AUTODMA	bool "HPT34X AUTODMA support (EXPERIMENTAL)"	depends on BLK_DEV_HPT34X && EXPERIMENTAL	help	  This is a dangerous thing to attempt currently! Please read the	  comments at the top of <file:drivers/ide/pci/hpt34x.c>.  If you say Y	  here, then say Y to "Use DMA by default when available" as well.	  If unsure, say N.config BLK_DEV_HPT366	tristate "HPT36X/37X chipset support"	---help---	  HPT366 is an Ultra DMA chipset for ATA-66.	  HPT368 is an Ultra DMA chipset for ATA-66 RAID Based.	  HPT370 is an Ultra DMA chipset for ATA-100.	  HPT372 is an Ultra DMA chipset for ATA-100.	  HPT374 is an Ultra DMA chipset for ATA-100.	  This driver adds up to 4 more EIDE devices sharing a single	  interrupt.	  The HPT366 chipset in its current form is bootable. One solution	  for this problem are special LILO commands for redirecting the	  reference to device 0x80. The other solution is to say Y to "Boot	  off-board chipsets first support" (CONFIG_BLK_DEV_OFFBOARD) unless	  your mother board has the chipset natively mounted. Regardless one	  should use the fore mentioned option and call at LILO or include	  "ide=reverse" in LILO's append-line.	  This driver requires dynamic tuning of the chipset during the	  ide-probe at boot. It is reported to support DVD II drives, by the	  manufacturer.config BLK_DEV_SC1200	tristate "National SCx200 chipset support"	help	  This driver adds support for the built in IDE on the National	  SCx200 series of embedded x86 "Geode" systemsconfig BLK_DEV_PIIX	tristate "Intel PIIXn chipsets support"	help	  This driver adds explicit support for Intel PIIX and ICH chips	  and also for the Efar Victory66 (slc90e66) chip.  This allows	  the kernel to change PIO, DMA and UDMA speeds and to configure	  the chip to optimum performance.config BLK_DEV_IT8172	bool "IT8172 IDE support"	depends on (MIPS_ITE8172 || MIPS_IVR)	help	  Say Y here to support the on-board IDE controller on the Integrated	  Technology Express, Inc. ITE8172 SBC.  Vendor page at	  <http://www.ite.com.tw/ia/brief_it8172bsp.htm>; picture of the	  board at <http://www.mvista.com/partners/semiconductor/ite.html>.config BLK_DEV_NS87415	tristate "NS87415 chipset support"	help	  This driver adds detection and support for the NS87415 chip	  (used in SPARC64, among others).	  Please read the comments at the top of <file:drivers/ide/pci/ns87415.c>.config BLK_DEV_PDC202XX_OLD	tristate "PROMISE PDC202{46|62|65|67} support"	help	  Promise Ultra33 or PDC20246	  Promise Ultra66 or PDC20262	  Promise Ultra100 or PDC20265/PDC20267/PDC20268	  This driver adds up to 4 more EIDE devices sharing a single	  interrupt. This add-on card is a bootable PCI UDMA controller. Since	  multiple cards can be installed and there are BIOS ROM problems that	  happen if the BIOS revisions of all installed cards (three-max) do	  not match, the driver attempts to do dynamic tuning of the chipset	  at boot-time for max-speed.  Ultra33 BIOS 1.25 or newer is required	  for more than one card. This card may require that you say Y to	  "Special UDMA Feature".	  If you say Y here, you need to say Y to "Use DMA by default when	  available" as well.	  Please read the comments at the top of	  <file:drivers/ide/pci/pdc202xx_old.c>.	  If unsure, say N.config PDC202XX_BURST	bool "Special UDMA Feature"	depends on BLK_DEV_PDC202XX_OLD	help	  This option causes the pdc202xx driver to enable UDMA modes on the	  PDC202xx even when the PDC202xx BIOS has not done so.	  It was originally designed for the PDC20246/Ultra33, whose BIOS will	  only setup UDMA on the first two PDC20246 cards.  It has also been	  used succesfully on a PDC20265/Ultra100, allowing use of UDMA modes	  when the PDC20265 BIOS has been disabled (for faster boot up).	  Please read the comments at the top of	  <file:drivers/ide/pci/pdc202xx_old.c>.	  If unsure, say N.config BLK_DEV_PDC202XX_NEW	tristate "PROMISE PDC202{68|69|70|71|75|76|77} support"# FIXME - probably wants to be one for old and for newconfig PDC202XX_FORCE	bool "Enable controller even if disabled by BIOS"	depends on BLK_DEV_PDC202XX_NEW	help	  Enable the PDC202xx controller even if it has been disabled in the BIOS setup.config BLK_DEV_SVWKS	tristate "ServerWorks OSB4/CSB5/CSB6 chipsets support"	help	  This driver adds PIO/(U)DMA support for the ServerWorks OSB4/CSB5	  chipsets.config BLK_DEV_SGIIOC4	tristate "Silicon Graphics IOC4 chipset support"	depends on IA64_SGI_SN2 || IA64_GENERIC	help	  This driver adds PIO & MultiMode DMA-2 support for the SGI IOC4	  chipset, which has one channel and can support two devices.	  Please say Y here if you have an Altix System from SGI.config BLK_DEV_SIIMAGE	tristate "Silicon Image chipset support"	help	  This driver adds PIO/(U)DMA support for the SI CMD680 and SII	  3112 (Serial ATA) chips.config BLK_DEV_SIS5513	tristate "SiS5513 chipset support"	depends on X86	---help---	  This driver ensures (U)DMA support for SIS5513 chipset family based	  mainboards.	  The following chipsets are supported:	  ATA16:  SiS5511, SiS5513	  ATA33:  SiS5591, SiS5597, SiS5598, SiS5600	  ATA66:  SiS530, SiS540, SiS620, SiS630, SiS640	  ATA100: SiS635, SiS645, SiS650, SiS730, SiS735, SiS740,	  SiS745, SiS750	  If you say Y here, you need to say Y to "Use DMA by default when	  available" as well.	  Please read the comments at the top of <file:drivers/ide/pci/sis5513.c>.config BLK_DEV_SLC90E66	tristate "SLC90E66 chipset support"	help	  This driver ensures (U)DMA support for Victroy66 SouthBridges for	  SMsC with Intel NorthBridges.  This is an Ultra66 based chipset.	  The nice thing about it is that you can mix Ultra/DMA/PIO devices	  and it will handle timing cycles.  Since this is an improved	  look-a-like to the PIIX4 it should be a nice addition.	  If you say Y here, you need to say Y to "Use DMA by default when	  available" as well.