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To boot my linux, I faced a JMicron eSata/Pata controller problem, |
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that prevented my SATA disk from being recognized. => I had to use a |
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2.6.23 kernel, founded on the gentoo forum. (the knoppix latest |
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released I used were 2.6.19 !!!) Do you also have a JMicron controller |
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? |
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|
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> Is there any other solution for this or is the only Linux support |
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> going to require AHCI? It is unfortunately not reasonable or practical |
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> to switch BIOS options when choosing which OS to boot. <snip> |
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|
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Of course it is not. You will be able to run linux without any problem |
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with a recent kernel and all the required modules without AHCI. But |
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you may be able to run AHCI in both linux and windows too. Have a look |
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at http://en.wikipedia.org/wiki/Advanced_Host_Controller_Interface |
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|
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Quotes for Windows issue: |
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"Enabling AHCI in a system BIOS will cause a 0x7B Blue Screen of Death |
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STOP error (INACCESSIBLE_BOOT_DEVICE) on installations of Windows XP |
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where AHCI/RAID drivers for that system's chipset are not installed. |
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Switching to AHCI mode requires installing new drivers before changing |
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the BIOS settings." |
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|
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and for linux side: |
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|
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"AHCI is fully supported out of the box for Microsoft Windows Vista |
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and the Linux operating system from kernel 2.6.19. Older operating |
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systems require drivers written by the host bus adapter vendor in |
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order to support AHCI." |
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|
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Common problems switching to AHCI under Linux: |
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* AHCI controller does not work on AMD/ATI RS400-200 and RS480 HBA |
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when MSI is enabled due to a hardware error. In order for AHCI to work |
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users must provide the "pci=nomsi" kernel boot parameter. With MSI |
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disabled in this way, the PCIe bus can only act as a faster PCI bus |
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with hotplug capabilities. This is also true of the Nvidia nForce 560 |
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chipset. |
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* AHCI controller on AMD/ATI SB600 HBA can't do 64bit DMA |
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transfers. 64-bit addressing is optional in AHCI 1.1 and the chip |
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claims it can do them, but in reality it can't, so it is disabled. |
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After that it will be forced to do 32bit DMA transfers. Thus DMA |
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transfers will occur at the lower 4GB region of the memory, and bounce |
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buffers must be used sometimes if there is more than 4GB of RAM." |
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|
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Gal' |
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-- |
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gentoo-user@l.g.o mailing list |
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