64 gig sd card tip

[TroyBoy30]

Stole this from THT forum. badf1sh gets the credit for the fix

The Hull Truth - Boating and Fishing Forum

anyone having issues with using 64 gig cards, here is the fix

I also had the same issue with a PNY 64GB SDXC card. Apparently the Windows formatting program can only handle a FAT32 partition up to 32GB. I used the free program guifformat to format my card to a 64GB FAT32 partition. Worked like a charm for the formatting, however I will have to wait until this evening to try it in my Garmin.


Garmin specifies FAT32 as a requirement for formatting and lists 64GB as the max for the 76XX series, so I'd imagine the exFAT formatting of the card was the issue.

[deepanchor]

Keep us posted.

[GPtimes2]

Does this mean that only 32gig of a 64gig card is useable?

[TroyBoy30]

64 gig cards work. you simply have to format them as fat32. if not, the unit wont recognize the card at all

[KSPropbender]

64 gig cards work. you simply have to format them as fat32. if not, the unit wont recognize the card at all

Super illiterate here, does that essentially make the unit think it's seeing 2 32g cards instead of 1 64g?

[Larry3215]

No, it still sees a single 64 gig card. The Garmins just cant recognize the way a 64 gig card comes pre-formatted.

You are not likely to NEED a 64 gig card though.

A 32 gig card can hold something like 10,500 screen captures, or a gazillion miles of QuickDraw maps or at least 2 trillion waypoints - or some combination there of - already :)

[KSPropbender]

Is that gazillion miles of quick draw nautical mIles or statute?

[Larry3215]

Nautical of course ;)

[KevinH-BCB]

Will the Garmin 93sv handle a 64 GB SDXC card, or is this why you have to format it FAT32 bc the Garmin processor is 32bit or less?

[Slapshot2500]

Any card greater than 32gb will have to be reformatted as FAT32. Iirc they come formatted in exFAT, which is a newer version/protocol. Any card less than 32gb is already formatted as FAT32.

[Larry3215]

I cant remember if the echomaps can handle 64 gigs (re-formatted to FAT32) or not. I know the 7600 series can. If it doesnt work, you could try re-formatting down to 32 gigs.

Seriously though, unless you do a LOT of screen shots AND record a LOT of sonar, you will never fill up a 32 gig card.

[KevinH-BCB]

Too late - I've already ordered the 64 GB SD cards

[LWINCHESTER2]

I think they will work fine if you download the FAT32 utility TroyBoy mentioned and format them with it.

[Slapshot2500]

I cant remember if the echomaps can handle 64 gigs (re-formatted to FAT32) or not. I know the 7600 series can. If it doesnt work, you could try re-formatting down to 32 gigs.

Seriously though, unless you do a LOT of screen shots AND record a LOT of sonar, you will never fill up a 32 gig card.

The echomaps handle a fat32-formatted 64gb card just fine. :)