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Are Ultra DMA (UDMA) drives supported?

DMA drives supported UDMA Ultra
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Are Ultra DMA (UDMA) drives supported?

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Solaris 7 or later recognizes UDMA drives in native mode. They are not supported in Solaris 2.6 or older, although they are recognized in its compatibility mode as regular ATAPI drives. During installation, you may want to disable UDMA mode if your install hangs during recognition of hard drives (which occurs shortly after the Solaris copyright line is displayed). For Solaris 8, DMA is disabled for ATAPI devices, as it caused installs to fail for several BIOSes. For Solaris 10, it is enabled, at least for me.

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I understand Solaris 7 recognizes UDMA drives in native mode. They are not supported in Solaris 2.6 or older, although they are recognized in its compatibility mode as regular ATAPI drives. During installation, you may want to disable UDMA mode if your install hangs during recognition of hard drives (which occurs shortly after the Solaris copyright line is displayed).

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I understand Solaris 7 recognizes UDMA drives in native mode. They are not supported in Solaris 2.6 or older, although they are recognized in its compatibility mode as regular ATAPI drives.

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Solaris 7 or later recognizes UDMA drives in native mode. They are not supported in Solaris 2.6 or older, although they are recognized in its compatibility mode as regular ATAPI drives. During installation, you may want to disable UDMA mode if your install hangs during recognition of hard drives (which occurs shortly after the Solaris copyright line is displayed). For Solaris 8, DMA is disabled for ATAPI devices, as it caused installs to fail for several BIOSes. It can be enabled with the “ata-dma-enabled” property from the Device Configuration Assistant. See the question on “How can I improve disk and graphic performance?” for details.

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I understand Solaris 7 recognizes UDMA drives in native mode. They are not supported in Solaris 2.6 or older, although they are recognized in its compatibility mode as regular ATAPI drives. During installation, you may want to disable UDMA mode if your install hangs during recognition of hard drives (which occurs shortly after the Solaris copyright line is displayed). For Solaris 8, DMA is disabled for ATAPI devices, as it caused installs to fail for several BIOSes. It can be enabled with the “ata-dma-enabled” property from the Device Configuration Assistant. See the question on “How can I improve disk and graphic performance?” for details.

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