How To Get Your SD Card ID in Your Garmin Device

**catymag** · 28th September 2011, 10:44 AM

Originally Posted by teddytora

No Luck?

Oh well, hope some one finds the information about how to access the Edge 800 diagnostic menu & how how to find the apparently encrypted MicroSd card CID numbers useful

Try here, not sure if Edge 800 it's present
[Only registered and activated users can see links. ]

Edit: found

Go to Wrench -> System -> GPS -> View Satellites
Touch and hold the upper left corner of the screen until the diagnostic-screen appears

**loucav25** · 24th October 2011, 04:44 PM

anybody know how to find sd card serial number on a garmin 546s or 740s?

**marindukenyo** · 22nd December 2011, 03:08 PM

has anybody tried this trick with oregon 550?

**happykid57** · 21st January 2012, 08:14 PM

I tried this but I don't think you can get the CID. It gives the partition ID not the card ID, which you can get by issuing a DIR command on that drive. In my case, the "real hard drive ID" is the same regardless what drive I select.

Originally Posted by dvazg

The above link is dead. Try this:
[Only registered and activated users can see links. ]

This is screenshot of ID utility of my microSD card from Garmin device. Upon reading it was insterted into card reader. Where is card ID, serial, checksum....?

[Only registered and activated users can see links. ]

**Neil** · 21st January 2012, 10:37 PM

Originally Posted by dvazg

...... This is screenshot of ID utility of my microSD card from Garmin device. Upon reading it was insterted into card reader. Where is card ID, serial, checksum....?

[Only registered and activated users can see links. ]

@happykid57
As stated by dvazg in his edit to that post 18 months ago "Where is the card ID....?",
and as stated by you "...."the real hard drive ID" is the same regardless what drive I select." I long ago gave up on that so-called hardware ID extractor.

Originally Posted by happykid57

I tried this but I don't think you can get the CID. It gives the partition ID not the card ID, which you can get by issuing a DIR command on that drive. In my case, the "real hard drive ID" is the same regardless what drive I select.

I freely admit to a very shallow understanding of running command prompts, and was under the impression that a dir command on a drive only yields the "Volume Serial Number". Could you explain more fully how to get the CID using >dir?

**happykid57** · 22nd January 2012, 12:36 AM

Originally Posted by Neil

@happykid57
As stated by dvazg in his edit to that post 18 months ago "Where is the card ID....?",
and as stated by you "...."the real hard drive ID" is the same regardless what drive I select." I long ago gave up on that so-called hardware ID extractor.

I freely admit to a very shallow understanding of running command prompts, and was under the impression that a dir command on a drive only yields the "Volume Serial Number". Could you explain more fully how to get the CID using >dir?

Sorry, I did not mean to imply that that you can get the CID using the DIR command. You only get the "Volume Serial Number" (I called it the partition ID) when you issue the DIR command. You can also get the Volume Serial Number using the free utility "Speccy" which you can download for free from filehippo.com.

**Neil** · 22nd January 2012, 11:03 AM

Ahh... semantics! Love 'em, or in this case Hate 'em! You meant "It gives the partition ID, which you can get by issuing a DIR command on that drive, not the card ID". Can't say i'm not disapointed though... oh, well. Back to sticking the sd into the nuvi to get the CID.
Unless someone's got another solution

.
PS: Gave your post a "like", but only because it cleared up my confusion

**stefanos86** · 6th March 2012, 10:13 PM

Hello guys,

I'm trying to copy a Bluechart g2 vision map from the original sd card to another but i would like to keep it locked as is in the original. I know that the map is locked to the psn part of the cid of the sd card. Using an android app named SD tools, i can observe the following information about the sd card using my phone:

cid: 1b 53 4d 30 30 30 30 30 10 00 bd 8e e7 00 b1 2c
Serial: 0x00bd8ee7
date:01/2011
.......

now my query is if i use the serial observed as is and converted to decimal i get 12422887, which is an 8digit number instead of 10 is correct or:

if i reverse the serial to e7 8e bd 00 and then convert it to decimal, i get 3884891392, which looks fine.

As my GPSMAP421s drowned, i cannot test if the 3884891392 is the right number to use in the jetmouse generator.

Is there any other way to test if I have correctly unlocked my map?
I tried the homeport but it shows the detailed map without a sw.unl file in the sd card at all.

Thanks for your time guys

edit:
I would be grateful If somebody has a locked sd and an android phone to compare the the reversed-converted-to-decimal Serial which the "SD tools" app gives in the phone with the one his garmin device gives