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Autoboot with A2000IS (GM1.00B) and a 16GB Card

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Autoboot with A2000IS (GM1.00B) and a 16GB Card
« on: 15 / January / 2010, 16:33:16 »
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Did anyone succeed in auto-booting 16GB on A2000IS?

I prepared two primary partitions on the card: 32MB FAT16 and the rest FAT32.  I copied DISKBOOT.BIN and PS.FI2 to the FAT16 partition and the CHDK directory to the FAT32 partition.

I can turn on the camera and perform the "Firmware Update" step and get CHDK to work.  Great!  However I can't get it to autoboot.  I marked the FAT16 partition as a "boot" partition in gpartd.  I also tried "make bootable" from within CHDK on the camera.   But it doesn't help.  When the card is locked, the camera will not autoboot chdk.  Too bad!

I read in an early post (I believe - from 2008) that autoboot is camera specific, and so I wondered, was the code added to support A2000IS (I have a Firmware Ver GM1.00B).

Again, CHDK works on the card!  When I run it manually via "Firmware Update" it works and then the camera recognizes the FAT32 partition.  It just won't autoboot.  Also, I got autoboot to work on a 2GB card, single partition.

Any help would be appreciated.  Thanks!

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Offline reyalp

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Re: Autoboot with A2000IS (GM1.00B) and a 16GB Card
« Reply #1 on: 15 / January / 2010, 16:57:28 »
Quote
I can turn on the camera and perform the "Firmware Update" step and get CHDK to work.  Great!  However I can't get it to autoboot.  I marked the FAT16 partition as a "boot" partition in gpartd.
This will not help, canon does not use the normal boot flag. You need to write the string BOOTDISK into the disk, as described at http://chdk.wikia.com/wiki/Bootable_SD_card
Don't forget what the H stands for.

Re: Autoboot with A2000IS (GM1.00B) and a 16GB Card
« Reply #2 on: 15 / January / 2010, 18:03:07 »
It worked!  With Linux gpartd just like a breeze.  How did I miss this section about BOOTDISK string?  Thanks a lot!

 

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