Laptop with a SD card slot

[Michael GilliganParticipant @michaelgilligan61133]

Posted by SillyOldDuffer on 15/04/2021 16:49:07:

Posted by Michael Gilligan on 14/04/2021 23:59:27:

…

I have recently acquired 128GB and 256GB cards which are not compatible with my Mac slot, or with my USB 2 reader.

…

How old is the Mac, or rather which version of OSX is it running? Could be hardware or software incompatibility Cards bigger than 32Gb are formatted with exFAT which requires Snow Leopard or later.

Otherwise, might get a clue by trying this: start a terminal session (console) and then plug in the SD-Card. In the terminal immediately run the command 'dmesg' which should list the kernel log, showing what happened when the card was plugged in. The relevant messages will be near the end.

Dave

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I will try the terminal, Dave … thanks

The Mac is an elderly 15” MacBook Pro [model 5,4] running el Capitan

… I suspect it’s capped at 32GB on the SD card slot

I wasn’t really asking for help though: just pointing others to some perhaps-useful information about slots

MichaelG.

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Report: I can see nothing relating to the SD card, in the console log

… and, looking at the USB Device Tree, the Card Reader is listed:

Card Reader:

  Product ID: 0x8403

  Vendor ID: 0x05ac  (Apple Inc.)

  Version: 98.33

  Serial Number: 000000009833

  Speed: Up to 480 Mb/sec

  Manufacturer: Apple

  Location ID: 0x26500000 / 1

  Current Available (mA): 1000

  Current Required (mA): 500

  Extra Operating Current (mA): 0

  Built-In: Yes

.

But with nothing connected to it 

The card is a Lexar 128GB … similar to the one pictured here:

https://www.lexar.com/portfolio_page/professional-2000x-sdhcsdxc-uhs-ii-cards/

… but without the V90 mark

[ possibly an earlier version … or could it be a fake ? ] 

 

Edited By Michael Gilligan on 15/04/2021 18:53:18

[Frances IoMParticipant @francesiom58905]

I doubt if it is a hardware issue – I run a range of Linux systems of various ages (mostly because I have old programs I don’t want updating – such machines are seldom connected to my Lan) – a laptop running an old Linux cannot handle USB3 interfaces or large capacity SDHC cards (I can’t as yet afford 2TB cards to try these) but with a later Linux system (by swoping hdds) it can handle these – self evidently a software change between the older and the later Linux.

[Michael GilliganParticipant @michaelgilligan61133]

Posted by Michael Gilligan on 15/04/2021 18:15:00:

[..]

… and, looking at the USB Device Tree, the Card Reader is listed:

.

But with nothing connected to it

.

Apologies … Although true; that ^^^ was a 'red herring'

A known good 4GB SD Card mounts correctly, but is still not listed on the Device Tree

It does, however, show-up on the Desktop; in Disk Utility; and on the Finder … which the 128GB card does not.

MichaelG.

[Henry BrownParticipant @henrybrown95529]

Just to close the loop on this one, I ended up with a 17.3" Lenovo Legion 5 (2.6/5.0Mhz, 16gb RAM, 512gb SSD) bought direct from Lenovo with nine months interest credit.

It pretty much fulfils all my requirements and on opening this morning seems to be a very well made and sturdy machine. I was surprised to find that on reading the start-up info there is a SD card slot is this 17.3" version, a very well kept secret that even Lenovo help didn't acknowledge!

Thanks for everyone's help enabling me to get this far, I've just got to learn all the new stuff on it now!

[Michael GilliganParticipant @michaelgilligan61133]

Reviving this thread to link this very informative page from SanDisk : **LINK**

https://kb.sandisk.com/app/answers/detail/a_id/2520/~/sd%2Fsdhc%2Fsdxc-specifications-and-compatibility

MichaelG.

[Nicholas FarrParticipant @nicholasfarr14254]

Hi MichaelG, that is very informative from SanDisk. As it happens, my recently new Acer laptop has no card slot and some of my SD memory cards can't be read on my old computers with a the USB card reader that I've had for many years, although they do have card readers built into them and will read all those I have tried. However I thought it was time to get a new card reader, inspired by this thread by the way. Saw this one in Tesco's NANGA cardreader for £5.00, and it reads more types of card than I have got. In fact I used it just the other night to record a TV programme while I was out, onto a SanDisk micro SD Ultra and is impeccable, so I bought another one just for my new laptop.

Regards Nick.

Edited By Nicholas Farr on 02/05/2021 17:10:47

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