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adding dual partition support for >2012 camera's and exFAT for all

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Offline pigeonhill

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Re: adding dual partition support for >2012 camera's and exFAT for all
« Reply #20 on: 16 / September / 2022, 02:30:36 »
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Quote from: Mlapse on 15 / September / 2022, 03:01:22
making a dual partition card for >2011 cam.
@philmoz creating a dual partition seems not yet is included in the M3 build. sorry my bad, looking at the wrong build

@pigeonhill, does this work for you or is this unclear at any point?

this method is only suitable for large sd cards (SDXC) on >2011 cams that use the card lock boot method.
although it will give minor speed gains on cards sized 64GB, consider if you want the trouble a dual partition card can give.
if your card is 256GB or bigger you might encounter missing CHDK modules at boot with a FAT32 formatted card.
in that case this is your only solution to make it work.

needed: 64Gb or larger sdxc card, pc with Chimp, >2011 chdk capable cam, chdk build that supports dual partition (available at this moment for: S100, S110, G1X and M3-121a)

-if you have a single partition card, unpack the build to your sd card.
-place the card in your cam. card locked or with firmware update.
-go to chdk menu>miscellaneous stuff>Sd card> create dual partition
-place the card back in your pc, quick format the second partition to exFAT
-place the correct build without the CHDK folder on the first, small FAT partition
-place the correct build with the CHDK folder on the second exFAT partition
-use Chimp to make the card bootable
-lock the card and place it in your camera

if you want to make the card single partition again:

-use Chimp to remove the bootflag. if you don't the dual partition bootflag will be there even after formats and you'll be unable to remove it with Chimp unless you reformat to dual partition.
-delete the files on the FAT partition
-place the card in your cam and do a quick format
-quick format the card on your pc in your favorite file format


added as method 4: Using Chimp   https://chdk.fandom.com/wiki/Prepare_your_SD_card

@Mlapse

Many thanks for this.

One thing that remains slightly confused in my mind is what size cards can be used.

Up to now I’ve restricted my M3 SSD use to a maximum of 64GB SDXC cards.

What I’m still not fully clear about is, how high can you go with SDXC cards, which I assume must be limited to the UHS-1, ie the M3 won’t allow us to exploit UHS-II, or dos it?.

I thus wonder if you could add an explicit table that flagged the best approach to use, single or dual partition, for each card size, 16 through to 256GB, say.

Having said that, I personally, as a stills shooter, am content with using 64 or even 32GB cards, rather than have a single very large card, eg 128 or even 256GB card. But I would welcome other views.

Once again many thanks to you and @philmoz


PS since posting I found these links [size=78%]of background interest [/size][size=78%]https://satechi.net/blogs/news/ultra-high-speed-uhs-sd-memory-cards-differences-between-uhs-i-vs-uhs-ii[/size][size=78%]

https://havecamerawilltravel.com/sd-cards-explained/


https://havecamerawilltravel.com/sd-card-formatter-app/[/size]
« Last Edit: 16 / September / 2022, 03:08:41 by pigeonhill »
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Offline Mlapse

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Re: adding dual partition support for >2012 camera's and exFAT for all
« Reply #21 on: 16 / September / 2022, 03:27:48 »
have not found any trouble, but the m3 still runs on the battery, so i'm not quite done testing with the new build until the adapter has arrived.

my question is: does the larger card give you added value?
reading yours makes me think for you the answer is no.
so if you are happy using 32gb or 64gb cards don't change it and don't mess with dual partition cards.

there is no upside in larger cards if you do not use that capacity in one project.

adding only bigger fuel lines and a bigger fuel tank might extend the range, it doesn't make your car drive faster....it might even slow down due to the extra weight.
« Last Edit: 16 / September / 2022, 18:09:44 by Mlapse »
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Offline pigeonhill

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Re: adding dual partition support for >2012 camera's and exFAT for all
« Reply #22 on: 18 / September / 2022, 00:31:55 »
Quote from: Mlapse on 16 / September / 2022, 03:27:48
have not found any trouble, but the m3 still runs on the battery, so i'm not quite done testing with the new build until the adapter has arrived.

my question is: does the larger card give you added value?
reading yours makes me think for you the answer is no.
so if you are happy using 32gb or 64gb cards don't change it and don't mess with dual partition cards.

there is no upside in larger cards if you do not use that capacity in one project.

adding only bigger fuel lines and a bigger fuel tank might extend the range, it doesn't make your car drive faster....it might even slow down due to the extra weight.

@Mlapse I’m still trying to understand the advantage of dual partition over FAT32 single partition.

My understanding is, say on the M3, if you create a single partition FAT32, you could, in theory, use up to a 2TB (or even TB) card, which is the max card size for a dual partition exFAT.

The other limitation of FAT32 is that file sizes are limited to 4GB, but that doesn’t seem an issues for photography use.

Am I missing something?
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Offline Mlapse

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Re: adding dual partition support for >2012 camera's and exFAT for all
« Reply #23 on: 18 / September / 2022, 01:53:31 »
Quote from: pigeonhill on 18 / September / 2022, 00:31:55
Quote from: Mlapse on 16 / September / 2022, 03:27:48
there is no upside in larger cards if you do not use that capacity in one project.
@Mlapse I’m still trying to understand the advantage of dual partition over FAT32 single partition.
Am I missing something?
the one and only advantage that you'll see is that exfat is quicker than fat32. this is noticable even before chdk fails to boot/has missing modules because it takes too much time.
due to it being slower for canon/chdk the limit is approx 256gb for fat32 and not the theoretical 2TB on canon cams.
« Last Edit: 18 / September / 2022, 02:02:16 by Mlapse »
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Offline pigeonhill

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Re: adding dual partition support for >2012 camera's and exFAT for all
« Reply #24 on: 18 / September / 2022, 01:59:29 »
Quote from: Mlapse on 18 / September / 2022, 01:53:31
Quote from: pigeonhill on 18 / September / 2022, 00:31:55
Quote from: Mlapse on 16 / September / 2022, 03:27:48
there is no upside in larger cards if you do not use that capacity in one project.
@Mlapse I’m still trying to understand the advantage of dual partition over FAT32 single partition.
Am I missing something?
the one and only advantage is that an exfat is quicker than fat32. this is noticable even before chdk fails to boot/has missing modules because it takes too much time


Got it. Many thanks
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Offline Mlapse

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Re: adding dual partition support for >2012 camera's and exFAT for all
« Reply #25 on: 20 / September / 2022, 07:03:58 »
a test with 64GB card was inconclusive, it might have been a fraction quicker to boot. but both worked equally well.

tested today with 512GB card on the M3, FAT32 vs dual partition FAT/exFAT, card lock method.
the M3 does manage larger cards than the S110 or G1X without missing modules.
because after i was thinking it wouldn't boot at all, it eventually did.

is there then any gain left then or should it be removed again?
in my opinion there is enough reason to keep it, and i will.  :)

on the M3 the most obvious change is when booting with that large card:
for the FAT32 card i need to press the on/off button for more than a few seconds before the cam is willing to boot
with the FAT/exFAT card i need only to press the on/off button for a fraction of a second before it boots up.

and rebooting only follows through with the dual partition card.

more a feeling, no real figures:
it looks like the cam is ready quicker after a shot, the same as noticed on the S110 and G1x

what does not seem to work is that when i try to create a dual partition card in the M3 nothing happens...have to check that.
« Last Edit: 20 / September / 2022, 08:24:23 by Mlapse »
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Offline philmoz

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Re: adding dual partition support for >2012 camera's and exFAT for all
« Reply #26 on: 21 / September / 2022, 19:46:06 »
@mlapse

New M3 1.21a version. Please check if you can make a dual partition card on the camera with this version.


Edit: attachment removed (did not work).
« Last Edit: 22 / September / 2022, 03:08:10 by philmoz »
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Offline Mlapse

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Re: adding dual partition support for >2012 camera's and exFAT for all
« Reply #27 on: 22 / September / 2022, 01:32:57 »
it does not yet make a dual card with version 6140.
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Offline philmoz

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Re: adding dual partition support for >2012 camera's and exFAT for all
« Reply #28 on: 22 / September / 2022, 01:34:18 »
Quote from: Mlapse on 22 / September / 2022, 01:32:57
it does not yet make a dual card with version 6140.


Does it alter the card at all?

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CHDK ports:
  sx30is (1.00c, 1.00h, 1.00l, 1.00n & 1.00p)
  g12 (1.00c, 1.00e, 1.00f & 1.00g)
  sx130is (1.01d & 1.01f)
  ixus310hs (1.00a & 1.01a)
  sx40hs (1.00d, 1.00g & 1.00i)
  g1x (1.00e, 1.00f & 1.00g)
  g5x (1.00c, 1.01a, 1.01b)
  g7x2 (1.01a, 1.01b, 1.10b)
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Offline Mlapse

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Re: adding dual partition support for >2012 camera's and exFAT for all
« Reply #29 on: 22 / September / 2022, 02:08:17 »
no, single partition files are still visible on the card after using 'make dual partition>YES' and it boots.
« Last Edit: 22 / September / 2022, 02:11:02 by Mlapse »
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