HP 48G - what next?

[ijabbott]

(03-01-2019 05:20 PM)cdmackay Wrote:  

(03-01-2019 09:30 AM)JSS Wrote:  3) Finally, about max 1 GB SD memory cards, they state that 50G supports FAT32 only partially and is restricted to max 1GB, but does it accept larger memory cards if formatted into 1GB partitions?

There's no need to format an SD (not SDHC) card (up to 2GB) into partitions.

The largest SD card that the 50g can format is 1GB. But it can use up to 2GB SD, which is the limit where SDHC starts — the 50g cannot use SDHC cards, i.e. greater than 2GB (possibly if they are partitioned into 2GB chunks? I don't know)

I think it only uses the first FAT partition. I understand that some people create a small, first partition for the 50g and add another partition for general computer use, but I'm not sure that's worth it these days for an old, slow, 2 GB SD card!

Quote:Cards above 1GB can only be formatted on a computer. The best format to use is FAT-16, which is required for SD-based ROM upgrades/reflashes.

Also, making it FAT32 results in markedly slower turn-on times on the 50g, at least when formatted with the default parameters. That's probably due to increased FAT table size or maybe increased root directory size compared to FAT16.

Quote:There is not enough space in the 50g filer to report all the digits, for 2GB cards, so the 1 in front is missing. However, the 50g can still use all the space.

Not that it's likely to get full, unless you're using it for data logging or something.