[Bug 589369] Re: No automount for 8GB SDHC card: "FAT: Invalid FSINFO signature: 0x41645252, 0x61417272 (sector = 1)"

clubsoda 589369 at bugs.launchpad.net
Thu Oct 14 11:21:09 UTC 2010


Thanks Idefix, you're absolutely right.

I tried the WinXP test you suggested and it was successful, i.e. Windows
recognises Marantz formatting even with the incorrect FSINFO, so Windows
is more tolerant than linux in that regard.

Then I hacked the FSINFO back to the standard value using hexeditor.
Linux automount started working and the Marantz recorder was not
adversely affected, still being able to read and write the card with no
problems.

It's tempting to say "WinXP works, linux doesn't, therefore linux has a bug", but why has Marantz introduced this new FSINFO identifier? It's not just Marantz either. Apparently the Edirol R-09HR audio recorder does the same thing. See here:-
http://taperssection.com/index.php?topic=109564.300
In that case the user fixed the broken identifier with `fsck.vfat -a`.

Perhaps there's a bug in the SDK those manufacturers are using, unless
<start evil conspiracy theory music>
it's a plot to thwart linux!
<stop music>

It would also be interesting to know why the Marantz doesn't like the
way mkdosfs formats the partition, but I think I'll sign off now, before
the music starts again. :)

Cheers.

-- 
No automount for 8GB SDHC card: "FAT: Invalid FSINFO signature: 0x41645252, 0x61417272 (sector = 1)"
https://bugs.launchpad.net/bugs/589369
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