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CONFIG_BLK_DEV_IDESCSI: SCSI emulation support

General informations

The Linux kernel configuration item CONFIG_BLK_DEV_IDESCSI has multiple definitions:

SCSI emulation support (DEPRECATED) found in drivers/ide/Kconfig

The configuration item CONFIG_BLK_DEV_IDESCSI:

Help text

WARNING: ide-scsi is no longer needed for cd writing applications! The 2.6 kernel supports direct writing to ide-cd, which eliminates the need for ide-scsi + the entire scsi stack just for writing a cd. The new method is more efficient in every way.

This will provide SCSI host adapter emulation for IDE ATAPI devices, and will allow you to use a SCSI device driver instead of a native ATAPI driver.

If both this SCSI emulation and native ATAPI support are compiled into the kernel, the native support will be used.

SCSI emulation support found in drivers/ide/Kconfig

The configuration item CONFIG_BLK_DEV_IDESCSI:

Help text

WARNING: ide-scsi is no longer needed for cd writing applications! The 2.6 kernel supports direct writing to ide-cd, which eliminates the need for ide-scsi + the entire scsi stack just for writing a cd. The new method is more efficient in every way.

This will provide SCSI host adapter emulation for IDE ATAPI devices, and will allow you to use a SCSI device driver instead of a native ATAPI driver.

This is useful if you have an ATAPI device for which no native driver has been written (for example, an ATAPI PD-CD drive); you can then use this emulation together with an appropriate SCSI device driver. In order to do this, say Y here and to "SCSI support" and "SCSI generic support", below. You must then provide the kernel command line "hdx=ide-scsi" (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) for devices if you want the native EIDE sub-drivers to skip over the native support, so that this SCSI emulation can be used instead.

Note that this option does NOT allow you to attach SCSI devices to a box that doesn't have a SCSI host adapter installed.

If both this SCSI emulation and native ATAPI support are compiled into the kernel, the native support will be used.

Hardware

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