Re: disable Trash, Spotlight and fsevents on all optical (udf) discs
Re: disable Trash, Spotlight and fsevents on all optical (udf) discs
- Subject: Re: disable Trash, Spotlight and fsevents on all optical (udf) discs
- From: Wenguang Wang <email@hidden>
- Date: Thu, 3 Apr 2008 14:57:47 -0700
On Apr 3, 2008, at 2:27 PM, Oliver Lietz wrote:
Am Montag, 31. März 2008 schrieb Wenguang Wang:
On Mar 31, 2008, at 11:31 AM, Oliver Lietz wrote:
I'm doing a "newfs_udf -r 2.50 /dev/disk1" where disk1 is my BD
device
containing a BD-RE (rewritable Blu-Ray disc)
Although not related to your question, but a better way to format BD-
RE is:
newfs_udf -E 32 -p 32 -m fix-packet -t ow -r 2.50 -v yourvolumename /
dev/disk1
Wenguang, hints to make something better are always welcome. Can you
tell me
what exactly the first three options cause beyond what is described in
newfs_udf's man page?
It does exactly what the man page said.
-E 32 tells newfs_udf the media ECC block size is 32 blocks
-p 32 tells newfs_udf the packet size of the media is 32 blocks
These two will affect how the metadata partition is aligned and
grown. Not supplying these value may result poor performance when
using some udf implementations.
-m fix-packet tells newfs_udf to write to the BD-RE in fixed packet I/
Os, which may be faster than treating it differently.
In Leopard, it happens to work fine without all these parameters.
However, it's a good practice to use them for maximum compatibility.
-Wenguang
thanks,
O.
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