SDcard mounting issues on the MSI and AA1-10 netbooks

Hi All,

  So I was having issues with SDcards mounting on the MSI and AA1-10, so I opened a bug on it.

 Guoqing Zhu from the Beijing development group was just logged into the MSI system upstairs, he found the problem.

  I had formatted the sdcards on Windows XP Home.

  Once I used his suggested mkfs command :

  mkfs -F pcfs -o fat=32,spc=64 /dev/rdsk/c4t0d0p0:1

  spc=64 being the correct parameter, all my sdcards started mounting and unmounting correctly.

CR 6760291

Comments:

I'm curious to see how it'll work out using a card mounted in the SD slot as a zfs file system. :-) I'll be trying it out this weekend. I'll let you know how it turns out.

Posted by Steven Blackford on March 24, 2009 at 04:03 PM PDT #

Hey David,

One thing that is still kind of a pressing matter is USB transfers are dead slow.
I do believe the USB framework in Solaris needs a good look over. In Linux/FreeBSD/NetBSD I can transfer a large video file for example to a USB disk maybe 10-15x faster then on Solaris so it \*really\* shows.

Maybe something you could bring up in Sun/Intel next please?
Thanks again,
Edward.

Posted by EdwardO'Callaghan on March 25, 2009 at 02:01 AM PDT #

Formatting your SDcards in a computer is almost always a bad idea. There are some "proprietary" algorithms (ones that aren't in the Simplified "open" specs for SDcard), that cameras use to format this media and lay out the file system so that the cards receive the best possible performance. The cameras all (that I've tried) get this right. All the computers I've tried get it wrong.

The end result: if you format the media in your computer, it will work, but the performance of accesses to it (especially writes) will be much poorer than if you had formatted it in the camera.

Posted by Garrett D'Amore on March 25, 2009 at 02:25 AM PDT #

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I work for the Java Embedded Global Business Unit of Oracle within Java Industry Solutions group under Alliances and Channels . I'm focused on the Java SE Embedded and BDB for ARM and PPC across multiple verticals

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