[bookport] Re: CompactFlash Memory Cards
- From: "LARRY SKUTCHAN" <lskutchan@xxxxxxx>
- To: <bookport@xxxxxxxxxxxxx>
- Date: Mon, 14 Mar 2005 14:23:16 -0500
While we are talking about flash cards, let me also talk a little bit
about the 2 GB issue.
When a card (or any other device) supports more than 2 GB of space, the
device that uses the card must support FAT32. FAT32 is Microsoft's way
of letting a device support more than 2 GB of data. FAT stands for File
Allocation Table and the 32 represents the size of each entry in the
list that keeps track of all the files on the disc (or card).
When you format a card with Book Port's format command, the device uses
the FAT16 file system, so if you format a 4 GB card with the device, it
will see only 2 GB. Now, if you format that same card with your PC and
use FAT32, Book Port sees all 4 GB, but the access speed is somewhat
slower that it would be if you had used FAT16. FAT32's access speeds
are somewhat slower for any device, because there is more information to
keep track of. If this speed difference is noticeable to you, we
suggest staying with 2 GB or less.
For an experiment, format a blank flash card with FAT32 and try it in
your Book Port. It is doubtful you will even notice the difference
until you start adding dozens of files to a folder.
>>> lists@xxxxxxxxxx Monday, March 14, 2005 1:50:01 PM >>>
Hey, since Larry's apparently monitoring the list now:
Larry, can you weigh in on the CompactFlash memory type 1 / type 2
issue?
There appears to be some confusion among list members as to whether
there
are any contra-indications to the use of type 2 cards?
John
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