Messages in this thread |  | | Date | Thu, 20 Sep 2001 20:19:43 +0200 | From | David Balazic <> | Subject | Linux not detecting ide0 |
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I discovered some weird behavior in IDE interface handling. I some cases linux detects the ide1 channel , but not ide0. More precisely , it prints a line like :
ide0: BM-DMA xxxxxx
but that is it. Nothing else. No line of :
ide0: at 0x0170 blah blah
no drives on the channel are recognized. No ide0 entry in /proc/devices etc.
ide1 and the devices on it are more or less OK. ( I didn't notice any problems, but it is hard to test if linux does not see the root fs on hda ! )
I tested the redhat kernel-2.4.7-10 and vanilla linux 2.4.9.
Hardware details : - MSI K7T Pro2A motherboard , BIOS v2.9 , VIA KT133 chipset, via 686b southbridge - hda is an IBM Deskstar 75GXP 45 GB hard drive ( DTLA-307045 ) ( 80-wire cable, cable-select , connected to the end of the cable, thus master ) - hdb : none - hdc : Acer 1208A CD-RW drive ( cable select (master)) - hdd : Teac CD532E-B CD-ROM ( cable select (slave)) 80-wire cable
The way to trigger this is to set one of the IDE devices in BIOS to wrong geometry. Maybe it is a BIOS bug.
I some cases I also got a weird line from linux : hd1: C/H/S=0/0/0 from BIOS ignored
I thought that disk are enumerated by letter only, not numbers. ( it is H-D-one , not H-D-ell, in case you have a funny font )
-- David Balazic -------------- "Be excellent to each other." - Bill S. Preston, Esq., & "Ted" Theodore Logan - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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