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@lists.fedoraproject.org
From: home user <mattis...@comcast.net>
Send reply to: Community support for Fedora users
<users@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@lists.fedoraproject.org>
> > From: home user <mattis...@comcast.net>
> > Subject: how to test USB stick capacity.
> > Send reply to: Community support for Fedora users
> > <users@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:mi...@guam.net
> > mailto:msetze...@gmail.com
> > mailto:msetze...@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:mi...@guam.net
mailto:msetze...@gmail.com
mailto:msetze...@gmx.com
Guam - Where America's Day Begins
G4L Disk Imaging Project maintainer
http://sourceforge.net/projects/g4l/
+------------------------------------------------------------+
--
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