Question On Corrupt Ram Memory on Nuvi 770

[itzbinnice]

I just noticed I lost about 839 MB on my Nuvi 670. If I check the Nuvi drives properties it indicates the following:
Used Space= 2.2 GB (All Files show 1.41 GB used)
Free Space= 1.60 GB
Capacity = 3.83 GB

If I highlight all the files they total 1.41 GB, that�s a huge difference than the 2.2 GB indicated as used space.
My files were all backed up so I went ahead and deleted all the files, then ran a diagnostics check, and reset everything.
Checked properties again with no files at all on it and shows used space as 839 MB.
Windows is set up to show hidden files.

I also have a Nuvi 680 and ran a property check on that unit.
Used Space= 1.76 GB (All Files show 1.75 GB used)
Free Space= 114 MB
Capacity = 1.87 GB
THIS IS PROPER since it�s only using .1GB for firmware and other system proprietary files.

I called Garmin support and spent about � hour with them and they were no help.
The guy kept putting me on hold and asking somebody else�s advice.
His final answer was that the 839 used MB was being used by system files that could not be accessed.
I told him that�s ridiculous since my Nuvi 680 only used .1 GB for system files. Conversation ended there.


I�m at my wits end with this.
I would never format a GPS since to the best of my knowledge GPS�s use Ram memory and not a hard drive.
I also am reluctant to run chkdsk on a GPS using Windows XP.

Any advice would sincerely be appreciated, if chkdsk is an option, please give instructions on how to run it on the Nuvi 770.