Thread: Question On Corrupt Ram Memory on Nuvi 770

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 ½ 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.