I'm formatting my WD external drive from FAT32 to NTFS. It asks for allocation unit size with options ranging from 512 bytes to 64 kilobytes.

Default is 4096 bytes.

Most files that will be on the drive are flac files ranging from 15-40 MB on average.

There will be some photos, program installation files, etc. too.

which allocation size should I choose?

Thanks.

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-David