Re: Trouble copying files to SanDisk m230

On Mon, 24 Apr 2006 16:30:33 +0000, Beef wrote:

On Sun, 23 Apr 2006 04:23:34 +0000, Robert M. Riches Jr. wrote:
What kind of filesystem is on the device? Does that kind of
filesystem have a limitation on the number of files, like
the inode limit on Unix-based filesystems? Unfortunately,
that's the extent of what I'm likely to be able to help
with, because I don't know much more detail about filesystem
internals.

I wondered if that might be the case.

It is a FAT filesystem, and with encoding at 48kbps, I have put 166 songs
on there. According to the device itself they occupy 492MB, leaving 133MB
still free.

I seem to remember that the File Allocation Table (FAT) is a fixed size,
determined when the filesystem is created; the size partition divided by a
block size (called a cluster?) determines the number of entries in the
FAT. Have I got that right?

So if the designers intended the 512MB to be used to hold files of around
1.8MB each, they might have set up the filesystem to have a FAT with
around 284 entries. If my 166 songs have filed the FAT, that means the
block size is set around the 3MB mark. That seems too high.


I suppose what I wrote just above sounds pretty silly to anybody who knows
how FAT works... At least I imagine it does, after looking with parted at
the filesystem on the device.

# parted /dev/sdb1 check
Partition number? 1
Warning: File system doesn't have expected sizes for Windows to like it.
Cluster size is 16k (8k expected);
number of clusters is 31542 (63069expected);
size of FATs is 124 sectors (247 expected).
Ignore/Cancel? i
Information: Don't forget to update /etc/fstab, if necessary.

Beef

.

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