[hfs-user] Differences - HFS/HFS+

Entwicklung entwicklung@whengenibk.de
Tue, 2 Apr 2002 16:33:26 +0200


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Hello listers,
                  I'm trying to extend an HFS-volume to an HFS+ volume. =
Going by the specifications I've gathered the major differences which =
would play a role in the construction of an image.....

1) Difference in Allocation Block Size
2) Difference in basic structure of B-Tree components , MDB Vs. Volume =
Header etc. (incl. respective fields, kind of fields etc.)
3) Difference in NodeSize of the catalog
4) Thread records must be maintained even for files in HFS+

Anything else I've left out / overlooked ?=20
All I want to achieve is to modify my algos for HFS to work for HFS+ as =
well . I guess the variation in the allocation block size would help =
optimize disk space for HFS+.

Any other major / minor aspect I should be considering ?=20

Regards,
Nandini=20

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<HTML><HEAD>
<META content=3D"text/html; charset=3Diso-8859-1" =
http-equiv=3DContent-Type>
<META content=3D"MSHTML 5.00.2920.0" name=3DGENERATOR>
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<BODY bgColor=3D#ffffff>
<DIV><FONT face=3DArial size=3D2>Hello listers,</FONT></DIV>
<DIV><FONT face=3DArial=20
size=3D2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=20
I'm trying to extend an HFS-volume to an HFS+ volume. Going by the=20
specifications I've gathered the major differences which would play a =
role in=20
the construction of an image.....</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>1) Difference in Allocation Block =
Size</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>2) Difference in basic structure of =
B-Tree=20
components , MDB Vs. Volume Header etc. (incl. respective fields, kind =
of fields=20
etc.)</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>3) Difference in NodeSize of the=20
catalog</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>4) Thread records must be maintained =
even for files=20
in HFS+</FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>Anything else I've left out / =
overlooked ?=20
</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>All I want to achieve is to modify my =
algos for HFS=20
to work for HFS+ as well . I guess the variation in the allocation block =
size=20
would help optimize disk space for HFS+.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>Any other major / minor aspect I should =
be=20
considering ? </FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>Regards,</FONT></DIV>
<DIV><FONT face=3DArial =
size=3D2>Nandini</FONT>&nbsp;</DIV></BODY></HTML>

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