Well, that was interesting!
The report (for the one that said it was 10Gb even after reformat):-
Code:
Verifying capacity of drive: I:
Determining disk geometry...
Drive reports:
Cylinders : 1377
Media type : 0x0B (Removable media other than floppy.)
Tracks per cylinder: 255
Sectors per track : 63
Bytes per sector : 512
Total bytes (cylinders * tracks * sectors * bps): 11326210560 (10801 MB)
Determining partition information...
Drive reports:
Starting offset : 32256
Partition length : 11331371520 (10806 MB)
Hidden sectors : 63
Partition number : 1
Partition type : 0x0C
Boot indicator : Active
Recognized partition: TRUE
Rewrite partition : FALSE
Verifying reported capacity...
Stage 1: Writing data...
Max bytes writable: 11331371520 (10806 MB)
Time taken for stage 1: 00:36:41
Stage 2: Reading and verifying data...
Verified max bytes writable: 11331397206 (10806 MB)
Time taken for stage 2: 00:29:32
+++ POSSIBLE FAKE: Able to read more data than could be written?!
Note: The *actual* capacity of the drive shown above may well be less than was claimed when it was sold to you as (e.g. a 64MB drive may be reported here as only having 61MB of storage.
This is "normal", and can be caused by several things:
1) Manufacturers pretending that there are 1,000,000 bytes to the MB instead of 1,048,576. This is pretty "normal" in the industry and done to make products sound better than they actually are
2) Slight errors of a few KB in the testing process due to only checking the partition area of the drive selected. The MBR (incl partition table) would probably add another 16K or so
3) Opting to perform a quick check, as opposed to using this utility's more thorough option. This can introduce an error of up to 1MB
Summary
=======
THIS DRIVE IS MISREPORTING IT'S CAPACITY AND IS PROBABLY A FAKE CARD/USB DRIVE
This device SHOULD have been sold to you as a >4 GB device.
Total time taken: 01:06:14
So the Sarah Dean utility is a fairly fast and reasonably accurate (to 1Mb) to prove for claims purposes that you have been sold a fake.
But still very interesting. I shall research this further now.
ian
