Opticon OPN2004 Demo Application Manual page 10

Due to the limited amount of flash memory inside the barcode readers the size of the file system is rather small,
being about 1MB. This is enough space for storing barcodes, but not for using the barcode readers as a portable hard
drive.
Tip: Barcode storage capacity can be increased by 100% by disabling the delete-key and quantity field (because
'SCANNED.TMP' and 'SCANNED.IDX' will not be used)
Important notes:

Since the file system is read-only by default, use the +-FORMAT-+ label on chapter 6 to erase the data after all
barcodes have been copied from the disk.

When manually deleting 'SCANNED.TXT' also delete the local files 'SCANNED.TMP' and 'SCANNED.IDX' from the
disk as well, because those are the files the barcode terminal is actually using, while 'SCANNED.TXT' is merely an
export of these 2 files.

Editing 'SCANNED.TXT' will have no effect and will be reverted back to its previous state as soon as the USB cable
is subsequently connected again.

Editing 'SCANNED.TMP' will cause 'SCANNED.IDX' (fast search index-file) to become corrupt, which can cause the
barcode reader to crash!
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