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   REPLYADDR nlazicBEZ_OVOGA@mudrac.ffzg.hr   
   REPLYTO 3:770/3.0 UUCP   
   MSGID:  ca28b73d   
   REPLY:  609789d9   
   PID: SoupGate-Win32 v1.05   
   Dana 22 May 2024 18:21:14 +0100 (BST), Theo  napis'o:   
   > 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   
   b_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.   
      
   you can test the card with "badblocks -o /report -t random -swv /dev/your_sd"   
   and see the report.   
   Then "cp /dev/zero /dev/your_sd" and ctrl+c after few seconds to   
   make clean space for partition table.   
   >   
   > Theo   
      
   --- SoupGate-Win32 v1.05   
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