Clovis
Established
I have a feeling you have a bad card. I would personally get it exchanged for a new one, especially as you have done a quite thorough test for functionality.
Brian, your card sounds like a lemon.
On the other hand, although these cards are supposed to work on all systems, my protocol for camera cards is this:
- Format in the camera that will use it
- Camera is the only device I let write to the card
- Computer only reads; don't even try to write files to card, erase files, etc.
- Then, when ready, reformat card in camera
I use this conservative protocol in the hope of avoiding problems.
Brian, your card sounds like a lemon.
On the other hand, although these cards are supposed to work on all systems, my protocol for camera cards is this:
- Format in the camera that will use it
- Camera is the only device I let write to the card
- Computer only reads; don't even try to write files to card, erase files, etc.
- Then, when ready, reformat card in camera
I use this conservative protocol in the hope of avoiding problems.
You know, I have not tried the card with my CP/M computer.
I wrote my own disk driver for it. Did all up my I/O using direct writes to the sectors on the disk. It was much faster than the operating system. At this point, those 5.25" disks are much faster than THIS Sandisk card.
Sandisk screwed this card up royally. I will post back the results after getting the RMA for it.
https://www.sdcard.org/developers/tech/sdhc/
This card is an SDHC UHS-I card, and according to the SDCARD.ORG, is a FAT-32 format disk. That is what WIN7 reports. SDXC cards us exFAT format.
So: this card should work as a FAT-32 disk, and was originally formatted that way.