Issue with a big SD card

andreaconsole

« on: 28 / August / 2019, 18:38:01 »

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Hi everyone,
First of all, thank you all for your support and special thanks to the developers for this incredible piece of software!
I've been an happy user of CHDK on my SX270 HS since a few years. Now I have a new 32GB SD card and I would like to use it at its full potential. As I understand, this means that I have to create two partitions, one with FAT16 (bootable, with DISKBOOT.BIN inside) and the other with FAT32. I've tried manually (KDE partition manager on Linux) and automatically (licks), but I can't make the camera use the second partition to store the pictures (it is like it can only use the small FAT16 one). Additionally, the CHDK folder is visible to DISKBOOT.BIN only if it is in the FAT16 partition. Is there any known issue with multi-partition with CHDK_sx270hs-102b-1.5.0-5257-full_ALPHA (102c seems unusable to me)? Thanks for your attention.

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srsa_4c

4451

Re: Issue with a big SD card

« Reply #1 on: 28 / August / 2019, 18:59:54 »

Quote from: andreaconsole on 28 / August / 2019, 18:38:01

Now I have a new 32GB SD card and I would like to use it at its full potential.

Just use it like your smaller cards. Trouble begins with cards larger than 32GB, these need to be formatted as FAT32 for autoboot.
PowerShots released after 2010 support autobooting from FAT and FAT32 cards, CHDK ports for these cameras have no support for multiple partitions.

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andreaconsole

Re: Issue with a big SD card

« Reply #2 on: 28 / August / 2019, 19:55:39 »

Thank you a lot, srsa_4c!
I got lost, but it was indeed very simple...
There are so many instructions around and, apparently, most of them are outdated :/
Just a remark: since Stick struggled to complete the task on my system, if one wants to manually make the SD bootable, the linux command should be something like:

Code: [Select]

printf "BOOTDISK" | sudo dd bs=1 count=8 seek=480 conv=notrunc of=/dev/sdX1(change X with your SD letter)

EDIT: the information was here: https://chdk.fandom.com/wiki/Prepare_your_SD_card
sorry for having asked something trivial!

« Last Edit: 28 / August / 2019, 20:16:28 by andreaconsole »

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