Hi I'm new to this, but have been 'Lurking' for a while as recommended for 'Noobs'.
However, this is something I may be able to shed some light on, so here goes!
There is an excellent website with lots of carefully prepared info on this topic and tools to help diagnose problems, test cards and make images.
However, it is in Russia, and similar sites it is hosted alongside can have a bad reputation. Antivirus companies will make sweeping assumptions and some class the site as 'Bad'. I disagree, but you must decide for yourself. I suggest using Virustotal.com to check all the links and files before you download anything. I have successfully downloaded all the tools and have not had any issues. If you are not familiar with Virustotal you will be happy to know it scans what is on the internet before you download, simulating the use of the top 60 AntiVirus packages in the world and providing a comprehensive assessment.
Having said that, 1 or 2 may try to indicate generic this and that. I believe this is just reverse engineering of one A/V by another based on a false positive. But you may decide to keep well clear - that's fine. You could always use a machine off your network that can be rebuilt / reimaged easily. But hey, isn't this one of Linux's strengths ?
Here is the link, the text on it's own is quite informative and unlikely to infect anyone, many of the tools can also be found elsewhere too...
https://www.raymond.cc/blog/test-and-detect-fake-or-counterfeit-usb-flas h-drives-bought-from-ebay-with-h2testw/
Cheers,
Xorsyst
-----Original Message----- From: main [mailto:main-bounces@lists.alug.org.uk] On Behalf Of Mark Rogers Sent: 16 June 2016 11:54 To: alug-main Subject: [ALUG] MicroSD card read issues
Can anyone shed light on what the following entries in /var/log/syslog actually mean?
Jun 16 11:43:45 mark-pc kernel: [92204.212656] sd 11:0:0:2: [sdf] tag#0 FAILED Result: hostbyte=DID_ERROR driverbyte=DRIVER_SENSE Jun 16 11:43:45 mark-pc kernel: [92204.212669] sd 11:0:0:2: [sdf] tag#0 Sense Key : Hardware Error [current] Jun 16 11:43:45 mark-pc kernel: [92204.212675] sd 11:0:0:2: [sdf] tag#0 Add. Sense: No additional sense information Jun 16 11:43:45 mark-pc kernel: [92204.212683] sd 11:0:0:2: [sdf] tag#0 CDB: Read(10) 28 00 06 87 47 30 00 00 08 00 Jun 16 11:43:45 mark-pc kernel: [92204.212688] blk_update_request: I/O error, dev sdf, sector 109528880 Jun 16 11:43:45 mark-pc kernel: [92204.212696] Buffer I/O error on dev sdf1, logical block 13690854, async page read
Background: This a pretty new Sandisk [1] 128GB MicroSD (UHS) card, taken out of my phone and plugged into my PC via a card reader (USB2). A previous card caused issues in my phone so I replaced it with this one, and it now is not behaving well (usually OK but sometimes if I try to look at photos on the card the phone will lock up temporarily).
I'm trying to back everything up onto my PC so I can copy it across onto a Samsung card to see if that's better. The above errors crop up periodically in syslog whilst copying.
Is the issue the card, the card reader, the PC, the drivers, ...?
[1] I believe it to be genuine Sandisk, it was purchased from Amazon. Advice on how to verify it's not a fake welcomed!