Dec. 20, 2019, 12:26 p.m.

Purchasing and Testing 64MB USB Flash Drive form Shopee

I have purchased 64MB USB Flash Drive from Shopee.ph last 12.12 (Year end sale), the product title and description is misleading because it says 64MB and 1GB USB USB2.0 Flash Drive Memory Stick

I tested the flash drive with f3 (f3write and f3read), the result are as follows:

/media/user/F410-22E3$ f3write .
F3 write 7.1
Copyright (C) 2010 Digirati Internet LTDA.
This is free software; see the source for copying conditions.

Free space: 62.81 MB
Creating file 1.h2w ... OK!                       
Free space: 0.00 Byte
Average writing speed: 1.53 MB/s

Verifying the files with f3read:

/media/user/F410-22E3$ f3read .
F3 read 7.1
Copyright (C) 2010 Digirati Internet LTDA.
This is free software; see the source for copying conditions.

                  SECTORS      ok/corrupted/changed/overwritten
Validating file 1.h2w ...  128612/        0/      0/     28

  Data OK: 62.80 MB (128612 sectors)
Data LOST: 14.00 KB (28 sectors)
           Corrupted: 0.00 Byte (0 sectors)
    Slightly changed: 0.00 Byte (0 sectors)
         Overwritten: 14.00 KB (28 sectors)
 Average reading speed: 7.17 MB/s

Finally, using the destructive f3probe to verify it this flash drive is counterfeit in it’s reported capacity:

$ sudo f3probe /dev/sdc
F3 probe 7.1
Copyright (C) 2010 Digirati Internet LTDA.
This is free software; see the source for copying conditions.

WARNING: Probing normally takes from a few seconds to 15 minutes, but
     it can take longer. Please be patient.

Probe finished, recovering blocks... Done

Good news: The device `/dev/sdc' is the real thing

Device geometry:
             *Usable* size: 63.11 MB (129248 blocks)
            Announced size: 63.11 MB (129248 blocks)
                    Module: 64.00 MB (2^26 Bytes)
    Approximate cache size: 0.00 Byte (0 blocks), need-reset=no
       Physical block size: 512.00 Byte (2^9 Bytes)

Probe time: 25.07s

So, this drive is a real 64 Mega Byte drive and not 1 Giga Byte flash drive. This is enough for storing files that are need to be printed on Computer Shops.

After I reformat the drive using the GNOME Disk Utility, the f3write and f3read results are as follows:

/media/user/64MB$ f3write .
F3 write 7.1
Copyright (C) 2010 Digirati Internet LTDA.
This is free software; see the source for copying conditions.

Free space: 62.94 MB
Creating file 1.h2w ... OK!                       
Free space: 2.00 KB
Average writing speed: 1.57 MB/s

/media/user/64MB$ f3read .
F3 read 7.1
Copyright (C) 2010 Digirati Internet LTDA.
This is free software; see the source for copying conditions.

                  SECTORS      ok/corrupted/changed/overwritten
Validating file 1.h2w ...  128888/        0/      0/      0

  Data OK: 62.93 MB (128888 sectors)
Data LOST: 0.00 Byte (0 sectors)
           Corrupted: 0.00 Byte (0 sectors)
    Slightly changed: 0.00 Byte (0 sectors)
         Overwritten: 0.00 Byte (0 sectors)
Average reading speed: 7.44 MB/s

Now, the disk is ok. There are no more Overwritten bytes/sectors.
Hopefully, this disk will last until my lifetime.

Here is my review and test video. (Invidio.us)