Take the 2-minute tour ×
Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

If a hard drive has a name like sda1 or sdb1 does that mean DMA is automatically being used?

share|improve this question
add comment

1 Answer

up vote 2 down vote accepted

The sdx device nodes don't really have anything to do with DMA. They refer to how the device is connected to the machine. SCSI, SATA and many USB devices expose themselves as sdx devces whereas older PATA devices are typically exposed as hdx devices.

share|improve this answer
1  
In Ubuntu 10.4, it should be using DMA anyway whether your HDD is IDE/SCSI/SATA or anything else that supports it. Also, some IDE drives will show up as sdx devices, especially newer (post-2000 or so) ones. CD burners for example will almost always show up as sdc or similar even if they're IDE because they use a form of SCSI emulation for burning. –  TuxRug Aug 14 '10 at 19:56
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.