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   REPLY:  9a4e9961   
   PID: SoupGate-Win32 v1.05   
   nev young  wrote:   
   > On 20/05/2024 17:37, Theo wrote:   
   > > Knute Johnson  wrote:   
   > >> On 5/20/24 09:03, nev young wrote:   
   > >>> Wherever I look on the internet I read that there is no difference   
   > >>> between TF cards and MicroSD cards.   
   > >>>   
   > >>> But I have never been able to boot any of my various Pi using TF cards.   
   > >>> They just do not boot!   
   > >>   
   > >> https://www.makeuseof.com/what-is-a-tf-card/   
   > >   
   > Yup. seen all of that before.   
   > >   
   > > So TF == microSD.   
   >   
   > and yet they don't work! At least for me.   
   > Has anyone ever booted a Pi (of any sort) using a TF card?   
      
   There's no such thing as a TF card, aside from 20 year old ones.   
   MicroSD and TF are one and the same.   
      
   > > OP, what cards are you having problems with?  Where did you buy them from?   
   > > Any chances they are fakes?   
   > >   
   >   
   > Both bought from, and returned to Amazon.   
   > and yes, of course, they could be fakes.   
   >   
   > these :   
   > https://www.amazon.co.uk/dp/B0BLSDMRSW?psc=1&ref=ppx_yo2ov_dt_   
   _product_details   
   >   
   > and these:   
   > http://nevilley.org.uk/tmp/Untitled.png   
      
   So you got 2x512GB for £20?  That sounds exceedingly dodgy.  Currently a   
   single Sandisk 512GB card is £40.   
      
   No idea about the 'Kootion' cards - but I'd stick to known brands, and avoid   
   those shipped by marketplace sellers.   
      
   > All of these cards do work and store the advertised amount of data.   
   > Using Raspi imager as well as Linux program Disks to write/read/verify   
   > 64Gb images and run benchmarks, which do work but show very low   
   > read/write speeds. (~9Mb/s).   
      
   I'm not sure Raspi-imager will notice the card is fake.  It'll write the   
   1-4GB image it has to the card, and if the card has let's say an 8GB real   
   capacity then everything will go fine and it'll verify correctly.  But as   
   soon as you start using more of the card beyond the first 8GB - eg the first   
   time boot which resizes the partition to use the whole card - then it'll   
   start silently overwriting the OS.   
      
   Theo   
      
   --- SoupGate-Win32 v1.05   
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