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Old 08-05-2003, 06:03 PM   #1
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External USB HDD in Slack 9.0


In order to have the kernel recognize my two external Iomega HDD connected via USB 1.1 ports, I had to add hdc=ide-scsi to the boot parameter stanza (and with the appropriate USB and SCSI resources in the kernel). The box is a Toshiba Sat Pro 4600 laptop with a PIII processor.

I read the Boot Prompt HOWTO, but the ide-scsi variable wasn't discussed. Can someone explain why this parameter is necessary.

Many thanks for any info or references.

Old 08-05-2003, 06:08 PM   #2
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Because the USB storage module at this
point in time only interfaces with the SCSI
low-level drivers...

Old 08-06-2003, 08:52 AM   #3
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Reply to Tinkster


Thanks for the good intel.. From what you said, it seems like we have a kluge, i.e., it works, but it ain't pretty.

Could you expain in a bit more detail what the hdc=ide-scsi parameter tells the kernel. Does it say that hdc is either a scsi block storage device an ide bus or that hdc is a scsi block storage device connected through a scsi adapter on an ide bus? Or something else?

By analogy I presume one could, in theory if not in practice, have a parameter, pci-scsi.

At a deeper level, it seems we are dealing with "buses" and the interfaces between them. I use "buses" in quotes because it may only be correct to use the term bus for "connections" inside the box. But is seems to me that USB is fundamentally a type of bus.

Regards, Rick


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