Patrick,
PD> No, it's not complaining about the 4th entry in node 389; it's saying PD> the node link field of node 389 of file id 4 (the catalog B*-tree), PD> i.e. the root is bad. Presumably the links (forward and backwards) PD> should be 0, unless you have an expanded root bitmap, in which case a PD> separate map node would've been added and linked in?
I had the time to redo my tests and I'm not wiser.
I get the error : Invalid index link 4, 2011
This should mean that the catalog (4) is somehow corrupted in node 2011. I'm attaching a dump of this node. This is a node at level 4 (the root is one level higher, at level 5). This is the last of 4 nodes, which seem to be correctly linked.
If I copy all 6000 files to the Macintosh hard disk, the copy works fine and the content of the files is also correct (files are named according to their content to simplify the job, that is file0000.txt contains 1024 * '0000', etc.).
Thank you for your comments.