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64GB SD card trouble

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Offline MaximusNYC

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64GB SD card trouble
« on: 25 / December / 2020, 17:08:54 »
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Merry Christmas, CHDKers!  I'm having a hell of a time getting my SD cards ready for CHDK.  I've got a couple of these:

https://www.bhphotovideo.com/c/product/1431033-REG/sandisk_sdsdxxy_064g_gn4in_extremepro_sdxc_64gb_card.html

I'm trying to use them in a pair of SX730 HS cameras.

I guess the cameras formatted them as exFAT.  I tried to reformat them as FAT32 using Windows Disk Management... but the only options available were exFAT and NTFS. 

Then I tried using the Windows command prompt.  I watched them slowly being (apparently) reformatted, but after reaching 99%, I got an error message.

The link to the Ridgecrop tool that is recommended in the wiki for setting up cards with FAT32 was broken.  So I downloaded a free program from Aomei.  That seemed to do the trick.

But STICK will not recognize the cards... and I can't even manually put the CHDK files on them in Windows!  In fact, I can't put anything on them in Windows.  I can see the cards, and copy stuff off of them, but I can't copy anything onto them.

I finally found the Ridgecrop tool at its new location.  But that doesn't work either: When I try to use it, I get this error message:

Failed to open device
GetLastError()=32
The process cannot access the file because it is being used by another process.

Any suggestions?
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Offline MaximusNYC

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Re: 64GB SD card trouble
« Reply #1 on: 25 / December / 2020, 17:11:13 »
I should add that my SX730s (which still do not have CHDK running on them) can still recognize and write to the cards without a problem.
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Offline reyalp

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Re: 64GB SD card trouble
« Reply #2 on: 25 / December / 2020, 21:26:43 »
The fact windows has trouble accessing them suggests something has gone wrong with the formatting. While windows won't normally let you format a 64 GB fat32 card, it should have no trouble reading them. The camera may have less stringent error checking.

You could try reformatting them in camera (which will go back to exfat) and then trying the Ridgecrop tool again.

FWIW, the I think I formatted the 64GB cards I'm using with gparted in linux after being denied by windows. There are some livecd/liveusb distros you can use for this. (including one just for gparted https://gparted.org/livecd.php though I haven't used it myself)
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Offline MaximusNYC

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Re: 64GB SD card trouble
« Reply #3 on: 25 / December / 2020, 23:21:13 »
> You could try reformatting them in camera (which will go back to exfat) and then trying
> the Ridgecrop tool again.

Thanks for the suggestion.  Just tried it.  Unfortunately, Ridgecrop gives me the same error as before.

Thanks also for the gparted suggestion.  It may be a few days before I can try it.
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Offline Mlapse

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Re: 64GB SD card trouble
« Reply #4 on: 26 / December / 2020, 14:24:30 »
For Windows:
Create Dual partition card can be done in camera.

working link:
http://ridgecrop.co.uk/index.htm?guiformat.htm

or you could try fat32formatter
http://software.tokiwa.qcweb.jp/EN/Fat32Formatter/index.html

and I do not know if chimp is already updated to handle large sd cards, but you can try stick for that:
1) download stick http://www.zenoshrdlu.com/stick/stick.html
2) and if not installed yet, download java http://www.java.com/en/download/manual.jsp

Can't find your SD-card?
Check if it is in FAT16 or FAT32, Stick does not recognise exFAT.
« Last Edit: 26 / December / 2020, 14:53:22 by Mlapse »
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Offline reyalp

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Re: 64GB SD card trouble
« Reply #5 on: 26 / December / 2020, 15:17:52 »
Quote from: Mlapse on 26 / December / 2020, 14:24:30
For Windows:
Create Dual partition card can be done in camera.
Just to be clear, the OP does not need or want a dual partition card, they need a single, 64 GB FAT32 partition. CHDK *does not* allow you to do this, and the various CHDK related partition options won't help.
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Offline Mlapse

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Re: 64GB SD card trouble
« Reply #6 on: 26 / December / 2020, 15:43:44 »
Quote from: reyalp
they need a single, 64 GB FAT32 partition. CHDK *does not* allow you to do this, and the various CHDK related partition options won't help.

ok, sorry, misunderstood, but with a single partition CHDK can help.

so to make it a FAT32 card, use fat32formatter if fat32format (guiformat) does not work.
just extract the package you need to the sd-card if stick or chimp does not work.
start the cam via firmware update and go into chdk menu miscellanious>sd card>make card bootable.

maybe this helps:
https://dl.orangedox.com/prepareyoursdcard
« Last Edit: 26 / December / 2020, 16:25:44 by Mlapse »
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Offline MaximusNYC

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Re: 64GB SD card trouble
« Reply #7 on: 26 / December / 2020, 23:48:57 »
So I was able to get GParted Live running on my Windows laptop off of a USB drive.  And I was able to use it to set my SD cards to FAT32.

But when I boot back into Windows, I still can't write to the cards.  And STICK is returning the same message as before about the cards: "Size, partitioning, bootability unknown".

Since I can't write to the cards, I can't extract anything to them, of course.

I'm kind of amazed at how difficult this.  I had no problem writing to smaller, less advanced SD cards using older versions of Windows, a decade ago.  :(
« Last Edit: 26 / December / 2020, 23:51:37 by MaximusNYC »
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Offline MaximusNYC

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Re: 64GB SD card trouble
« Reply #8 on: 27 / December / 2020, 01:40:28 »
I guess I may need to buy new SD cards.  The problem is that I don't understand exactly what's wrong with the cards I have... so I'm not sure what new cards to buy.

Are 64GB cards generally not a good idea for use with CHDK?  My understanding is that the FAT32 filesystem is only really meant for cards up to 32GB in size.  Does that mean I'd be better off buying 32GB cards? 

And does it make a difference if the cards are SD, SDHC, or SDXC?  I don't really know much about the distinctions between those card types.
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Offline reyalp

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Re: 64GB SD card trouble
« Reply #9 on: 27 / December / 2020, 02:58:00 »
Quote from: MaximusNYC on 27 / December / 2020, 01:40:28
I guess I may need to buy new SD cards.  The problem is that I don't understand exactly what's wrong with the cards I have... so I'm not sure what new cards to buy.
I would be quite surprised if this was an SD card issue, unless maybe if they're counterfeit. What you've encountered is unusual. It really *shouldn't* be this difficult.

People have run into problems with certain card readers.

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Are 64GB cards generally not a good idea for use with CHDK?  My understanding is that the FAT32 filesystem is only really meant for cards up to 32GB in size.  Does that mean I'd be better off buying 32GB cards? 
I've had no problems using 64 GB FAT32 cards in modern cameras (G7 X, SX710, SX730) with CHDK.

If you don't need 64 GB at a time, 32 GB are slightly more convenient, since you can format them anywhere. The price/GB isn't quite as good, but they're still pretty cheap.

Quote
And does it make a difference if the cards are SD, SDHC, or SDXC?  I don't really know much about the distinctions between those card types.
SDHC only goes up to 32 GB, SDXC goes larger. Either should work. The original SD only goes up to 4 GB and is long obsolete. Wikipedia is good https://en.wikipedia.org/wiki/SD_card

Cards with U3 or V3 speed rating provide the fastest file writing on these cameras. Note the U ratings are confusingly not the same thing as the UHS-... standards. This cameras only implement UHS-I, so higher UHS rating cards will work, but not provide significant benefit.
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