I'm lucky: I own a laptop only capable of running Windows Vista. I say this because I had to use said laptop to format an SD card to FAT32 wtih a 32KB cluster, something I found I'm unable to do using the Windows 8.1 Pro formatting tool.
How can I format SD cards, USB thumb drives and hard drives, etc., to FAT32 with a non-Windows-standard cluster size?
During the format on Windows Vista, I returned with an error stating that
The cluster size is too big for the selected file system.
How am I supposed to format FAT32 with a 32KB cluster if that's not physically possible?
3 Answers
The result to my query was that apparently, when assigning a cluster size to a FAT32 file-system, the size of the disk is very important.
Disks over 2GB appear to be eligible for a 32KB cluster, whereas their lesser counterparts are not. In order to assign a 32KB cluster on a disk that is less than 2GB in size, you need to use a third-party tool.
HP has a reliable formatting tool for USB drives that is harder to find than you'd think, while SD cards have a dedicated tool.
1Using SDCARD Formatter, a sdhc card will format with fat32 and 32k clusters on win 10. Have not tried a SDXC card, but have heard a rumor that the sd card formatter tool defaults to exfat for that.
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