Why need Q2C19 while upgrade build from 536 to 537

[Mitch Bradley]

Bryan.Ma at quantatw.com wrote:
>
> Hi, folks:
>
> While I upgrade build image from 536 to 537 using the
> autoreinstallation procedure from USB key,
>
> I saw“ unmounting root(this will take a while, unless you've got
> firmware Q2C19)”in the scrolling booting message,
>
> as the description said, it halted a while and continued whole booting
> process without intervention.
>
> So far, Q2C19 hasn't been released and why build image ask fro that?
>

I fixed the problem with slow unmounting yesterday and build a test
version of the firmware to prove that the fix works. I have not yet
released the new version.


> In earlier upgrade process, the similar message popped like this:
> “unmounting root(this will take a while, dwmw should fix...)”
>

We thought that it was a problem in the Linux JFFS2 code, but it turned
out instead to be a problem with the OFW copy-nand command.

If you want to see what I changed, look at svn commit number 496 in the
openfirmware source tree.


> Bryan
>
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