Having been previously bitten, it seems the only way to spot the fake cards is when they don't work properly.
One thought is do the devices support cards of that size?
-- Sent from my Psion 5MX Original Message From: Mark Rogers Sent: Thursday, 16 June 2016 10:55 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!