different phenomenon with 64K disk on WIN7 32bit vs. win 7 64 bit

because my external RAM only with 64K ram.
While it appear disk name on windows explore of win7 32 bit os version, such as Local Disk c:, with volume 57k.
But it do not appear on win7 64 bit version.

Both of them appear in disk management of device manager, but on 64 bit, it with out “format” selection item.

can some body tell me the reason?

Not supported.

Not supported what?

Due to the ram too samll or any root cause?
Would you pls give some more details ?

It’s a surprise 32-bit Win7 even allows to format it.

>Not supported what?
For FAT32 the minimum size is around 500 MB.

Igor Sharovar