Hello, Both the HFS specs and the HFS+ technical notes say that the keys of the records in the Catalog B-Tree have to be sorted in a case insensitive fashion. The names are however in MacRoman and Unicode encoding respectively.

I stumbled across a case where I had underscores '_' in my filenames and the Finder gave up on certain files on my HFS+ volume though the same sort techniques worked fine for HFS.

It took me some time and quite a bit of trial and error to figure out that a toupper(..) works fine for HFS but not for HFS+..... using a tolower(..) instead solved the problem for Unicode... what's the reason ?... Is 'case-insensitive' sorting for MacRoman in some way different from case-insensitive sorting for Unicode ??? Ultimately the same codes are used except for the fact that we have a 2-Byte character representation, right ?

Any tips are greatly appreciated !

Regards, Nandini