Does snow lepord really not read SDXC?

So my laptop (2010 13.3" MBP) will read 32gb cars but not 64? Would upgrading to mavics help this or is it a hardware issue?

Here is what it says
Vendor ID: 0x05ac
Product ID: 0x8403
Revision: 1.00
Serial Number: 000000009833

SDXC Card:

Capacity: 63.86 GB (63,864,569,856 bytes)
Removable Media: Yes
BSD Name: disk1
Partition Map Type: MBR (Master Boot Record)
S.M.A.R.T. status: Not Supported
Volumes:
Capacity: 63.86 GB (63,863,521,280 bytes)
Writable: Yes
BSD Name: disk1s1

I have tried both a Dynex USB adapter and the SD card adapter in the reader

Only from what you posted above, appears it is reading the card just fine.

bobtomay said:

Only from what you posted above, appears it is reading the card just fine.

Click to expand...

? An error pops up and says "The disk you inserted was not readable by this computer" or something 32gd sandisk works fine, 64gig doesn't

ScaryFatKidGT said:

? An error pops up and says "The disk you inserted was not readable by this computer" or something 32gd sandisk works fine, 64gig doesn't

Click to expand...

Maybe the 64gig card is bad.

- Nick

Could be bad ...

Your first post above - am assuming that's from Disk Utility?
Have you tried reformatting the disk?

bobtomay said:

Could be bad ...

Your first post above - am assuming that's from Disk Utility?
Have you tried reformatting the disk?

Click to expand...

Through the mac? I formatted it on my friends S4, same message.

Mac formatting Mac OS Extended (Journaled) is GUID and not Microsoft's Master Boot Record.