Quote:
Originally Posted by sfhub
Usually 32KB is best. Sometimes the microcontroller in the card is optimized for burst performance at a certain block size and if you deviate, the performance decreases. I've seen this happen when the card was optimized for 32KB but a reformat changed the block size to 4KB. You could always test the card by copying a large file before and after reformat. If performance is close to what you expect you are fine.
I don't believe the bootloader cares about your block size. I have mine set at 32KB.
|
About the block size...A larger block size will limit your actual storage capacity on the card but can increase performance. If you set it to 32kB blocks then every file, say a 1kB file will take up 32kB. Waste of space IMHO. The recommended starting size for a FAT32 disk is 4kB. The maximum is 32kB. I would guess that unless you are installing a very disk intensive program to your card; or are constantly transferring large files back and forth to the card a smaller block size would be better.
Just my 2C