Quote:
Originally Posted by Jack Tingle
Not exactly. The 4 GB SD (not HC) are non-spec designs with non-standard block sizes. Some equipment will accept them, some won't. In truth, any plain SD card over 1 GB may not work in any given older piece of equipment. The 2 GB size is in-spec, but not all vendors implemented the full spec. The 4 GB size is a non-spec hack that sometimes works.
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The point is that you can get them. Working is another matter.
For instance, they will work in my device, but I have to install a patched FAT32 driver ripped from a Palm Lifedrive to handle the FAT32 formatting sizes greater than 2GB require. SDHC cards aren't supported at all: they would require a replacement slot driver, which does not exist for my device.
Earlier Palm OS devices like the Tungsten E and T3 won't handle SD cards over 1GB. They were developed to conform to an earlier version of the SD card spec which topped out at 1GB, even though the FAT file system goes up to 2GB. (A third party driver exists that can address this in some devices.)
As usual, you have to be aware of what your particular device can handle.
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Dennis