I've used it on with my g4l disk imaging project for some time.
Have run across a few fake flashes. The program can fix them, but
fix them means change to the real size of drive. Witch means a
fake 2TB Usb might really be a 64G Usb.
It is command line only.
f3probe --help
Usage: f3probe [OPTION...] <DISK_DEV>
F3 Probe -- probe a block device for counterfeit flash memory. If
counterfeit,
f3probe identifies the fake type and real memory size
-l, --min-memory Trade speed for less use of memory
-n, --destructive Do not restore blocks of the device after
probing
it
-s, --reset-type=TYPE Reset method to use during the probe
-t, --time-ops Time reads, writes, and resets
-?, --help Give this help list
--usage Give a short usage message
-V, --version Print program version
Mandatory or optional arguments to long options are also
mandatory or optional
for any corresponding short options.
On 6 Feb 2024 at 21:09, home user wrote:
Date sent: Tue, 6 Feb 2024 21:09:47 -0700
Subject: Re: how to test USB stick capacity.
To: users(a)lists.fedoraproject.org
From: home user <mattisonw(a)comcast.net>
Send reply to: Community support for Fedora users
<users(a)lists.fedoraproject.org>
Thank-you, Michael, for both posts.
I've installed it.
It looks like it will take a while to run, and it's late here now. So I'll give
it a try tomorrow.
I gather we don't have a GUI interface available via DNF.
On 2/6/24 8:42 PM, Michael D. Setzer II via users wrote:
> site I found didn't seem to have download option, but it is in
> Fedora repo
>
> dnf whatprovides f3probe
> Last metadata expiration check: 1:04:55 ago on Wed 07 Feb 2024
> 12:35:47 PM ChST.
> f3-8.0-5.fc39.x86_64 : Utility to test for fake flash drives and cards
> Repo : @System
> Matched from:
> Filename : /usr/bin/f3probe
>
>
>
> On 6 Feb 2024 at 20:21, home user wrote:
>
> Date sent: Tue, 6 Feb 2024 20:21:02 -0700
> To: Community support for Fedora users
> <users(a)lists.fedoraproject.org>
> From: home user <mattisonw(a)comcast.net>
> Subject: how to test USB stick capacity.
> Send reply to: Community support for Fedora users
> <users(a)lists.fedoraproject.org>
>
>> Good evening,
>>
>> background
>> ==========
>> In the wikipedia article about USB Flash drives, it says
("https://en.wikipedia.org/wiki/USB_flash_drive#Counterfeit_products")
>> ------
>> Counterfeit USB flash drives are sometimes sold with claims of having higher
capacities than they actually possess. These are typically low-capacity USB drives with
modified flash memory controller firmware that emulates larger capacity drives (for
example, a 2 GB drive being marketed as a 64 GB drive). When plugged into a computer, they
report being the larger capacity they were sold as, but when data is written to them,
either the write fails, the drive freezes up, or it overwrites existing data. Software
tools exist to check and detect fake USB drives,[46][47] and in some cases it is possible
to repair these devices to remove the false capacity information and use its real storage
limit.
>> ------
>> A footnote leads me to believe that a tool "H2testw" could detect bad
sticks and maybe fix them.
>>
>> question
>> ========
>> I tried man, dnf, and dnfdragora to find H2testw. Nothing. I also tried to
find something else to test and fix sticks. Nothing. What do we have for this purpose
either already installed or that I can get via dnf?
>> --
>
> +------------------------------------------------------------+
> Michael D. Setzer II - Computer Science Instructor (Retired)
> mailto:mikes@guam.net
> mailto:msetzerii@gmail.com
> mailto:msetzerii@gmx.com
> Guam - Where America's Day Begins
> G4L Disk Imaging Project maintainer
>
http://sourceforge.net/projects/g4l/
> +------------------------------------------------------------+
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+------------------------------------------------------------+
Michael D. Setzer II - Computer Science Instructor (Retired)
mailto:mikes@guam.net
mailto:msetzerii@gmail.com
mailto:msetzerii@gmx.com
Guam - Where America's Day Begins
G4L Disk Imaging Project maintainer
http://sourceforge.net/projects/g4l/
+------------------------------------------------------------+