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  1. #131
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    @ Scubadoo,

    How did you get it to work on a 64 bit system? Do you use XP mode for that? Only this week I tried to install it on my W7 pro x64 laptop but I couldn't get it to work.
    And it is a shame about the way maps are displayed, very basic. But still better than nothing and way better than the limited features of MobilePC.
    The MapSource-like capability to cut/copy/paste/record/send/receive tracks is great, as well as the Map display option.

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  3. #132
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    hi,

    1. does any know whether JCV is working on this GMPC 5.00.70g?

    2. i see that map size is limited under 2G, but i try a map 2014.30NI, which size is aournd 3.2G, it works!
    in GMPC->map, it displays the map size as "-8**.** MB"( not remember the excact number), is it possible

    3. does GMPC have build in Quick Chinese input method(ime)? (first character of each word), or just system ime can be used when do search?

  4. #133
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    1. No, JCV isn't supported in this software.

    2. Please post the info/details from either [Only registered and activated users can see links. ] or [Only registered and activated users can see links. ] for that 3.2GB image please.

    3. Probably not, but you should try and report back please.
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  5. #134
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    Hi, Neil
    Thanks for your reply!

    See the following snapshot...

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    Last edited by cecial; 2nd December 2014 at 02:45.

  6. #135
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    This is what i meant by 'GMapTool' info [but your images are most informative]:
    Code:
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    I assume that's the size of your image shown in red above, because you mentioned 3.2GB, but as it's length is actually 3,165,061,120 bytes that's either ~2.95GiB (Gibibytes) or ~3.16GB (Gigabytes) depending on whether measuring in binary [GiB] or decimal [GB]. In any case it's way above the FAT16 file size limit of 2Gib-1 byte [2,147,483,647 bytes] and the img file is clearly seen and usable by the software. Version 5.00.7g must therefore be limited to the FAT32 file size limit of under 4GiB not the FAT16 limit of under 2GiB on that evidence.

    Interestingly, GMPC displays the size of the map as -863.6MB [actually it's MiB] which is the difference between the 4096MiB/4GiB file size limit and the actual size of the map [~3,232.4MiB or ~3.16GiB].

    Thanks for your interesting and informative post, it's much appreciated.
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  7. #136
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    Hi, Neil
    thanks for the detail analysis and also for the share.

    that means we can use map above 2G, (but not sure about 4G limited, because no map now beyonds 4G)

    really appreciate for your share!

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    one more thing i remeber about the size displayed in the map is that:
    i also tried a map which size is 1.87GB, but it is displayed as 2*** MB, FYI.

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    Quote Originally Posted by cecial View Post
    .....but not sure about 4G limited, because no map now beyonds 4G.........
    And map .img files won't for as long as Garmin use FAT32 as a file system in their continuing products. The 4GiB limit for file size is a limitation factor of Window's File Allocation Table, not of Garmin's you see.

    It was never intended for a FAT32 file system to see files of 4GiB and larger, they must be at least 1 byte less than that. That file size limitation is the very reason why MicroSoft came up with NTFS (New Technology File System) developed back before Windows NT was introduced. It's been ubiquitous since Win XP and nobody i know formats their big hard drives in FAT32 even though there are 3rd party tools to do it. Flash drives of more than 32GB which are formatted by default at manufacture to exFAT are a different story and often get reformatted by users to FAT32. Garmin has stuck with FAT32 though no doubt for some other very good reasons but in doing so locks themselves to map images below 4GiB on their handheld devices. I think the limitation with Garmin's software such as GMPC is much more to do with when it's code was written however because it's invariably running under NTFS now.

    Quote Originally Posted by cecial View Post
    one more thing i remeber about the size displayed in the map is that:
    i also tried a map which size is 1.87GB, but it is displayed as 2*** MB, FYI.
    And by that statement it's clear that you didn't read or at least didn't understand what i was saying in my previous post about the decimal Gigabytes and the binary Gibibytes. In simple terms, decimal is factor of 1000 therefore 1KB is 1000 bytes, and 1MB is 1,000 times more at 1,000KB etc, whereas binary is a factor of 1024, therefore 1KiB is 1,024 bytes and 1MiB is 1,024KiB and so on. You can easily see that 1,000 x 1,000 x 1,000 is 1,000,000,000 [1 billion] bytes which is a decimal Gigabyte. Then if we do the same with a binary factor of 1024 we can see that we'll have a much higher number resulting: 1024 x 1024 x 1024 = 1,073,741,824 bytes. So if we double that to get 2GiB we'll have 2,147,483,648 which is of course approximately 2.1475GB. So you can see that if your example of 1.87GB is actually 1.87GiB it cannot be higher than ~1915MiB or ~2,007,897,210 bytes. But 2 billion bytes is 2GB [Gigabytes] or 2,000 MB [Megabytes] which is Decimal and it may well have been displayed that way in a different environment to Windows.

    So the simple answer is that the map size of 1.87GB was displayed by windows in the binary sense, now more correctly referred to as GiB. M$ is technically correct as binary numbers were used in IT since its inception and it was only the fact that the HDD and flash drive manufacturers tried to hijack the binary names and make them decimal back as far as the '90s. Why? Because it makes their drives seem bigger is why. Plug your 64GB USB stick or media card into your PC and see what size is shown, it won't be 64GB, sure it might show 64,000,000,000 bytes or close to it, but that's actually ~59.4GiB [Gibibytes] which Windows will display as 59.4GB [when it's actually GiB, Gigabytes] because they refuse to yield to the games of the drive manufacturers.

    If you think my simplification of binary as a factor of 1,024 and decimal as 1,000 is confusing, here's some light reading for you any other interested or confused readers:
    Code:
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    Have a look at how they explain the binary factor .....

    If only M$ would roll over and accept the new naming the confusion might end ..... but i'm not holding my breath for that.
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  10. #139
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    @ cecial
    May you verify if the whole map is displayed and visible?
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    [Only registered and activated users can see links. ]

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    You have to navigate to get to the good.
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    Please don't flood my pm box with questions you can post on forum!! You won't hear back from me.

  11. #140
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    @Neil,
    i know the story about 1024 and 1000, and why 4GiB is there when we use FAT32. Actually it was 8 years ago when i downloaded a movie(*.mkv format), which size is more than 4GiB, when the downloaed files is upto 4GiB, the tools reported no permission to write file, at that time, i know the file limition of FAT32 .

    But thanks all the same for explaining so much and directing me to the website !

    let me verify tonight, and show more details.

 

 
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