Formatted a disk partition using DiskGenius for NTFS with (maximum) cluster size of 2048KB (2MB). I notice Windows itself also can format NTFS with this cluster size in Disk Management. This setting works fine with Windows 10, CHKDSK, and DiskGenius, but is unrecognizable by Linux and other partition tools (including AOMEI).
Looking the NTFS boot sector, I see 244 (hex F4) sectors per cluster recorded, with sectors being 512 bytes of course. That value, however, is too small and only indicates 122KB per cluster, which is an invalid value. Somehow, however, this is working in Windows just fine.
Is there a newer NTFS parameter block for sectors per cluster somewhere? It needs 4,096 sectors per cluster indicated to do 2MB clusters, and that value won't fit in the single byte available in the boot record.