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
