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Ok, that is strange... With latest build (Oct02) - camera is booting and working fine, whats interesting... Memory card used to install broken build - doesnt boot. With a card that was used for older builds - all is fine.

I doubt the files are corrupted.

If you can compile ML, you could start debugging in reboot.c, then in boot-hack.c, by placing LED blinks at various stages to check whether the code reaches them. That's also helpful for finding out where it locks up.

Will try on the weekend - or will pray that next nightly magically works (which is a silver bullet in many cases...).

That's weird - the first thing ML does, after checking autoexec.bin checksum (to prevent running code from a corrupted file), is turning on the SD card LED. On most recent models, Canon bootloader also does that when loading autoexec.bin (that's before our code gets executed). Make sure you take the battery out after each failed startup attempt (as the power switch is just a soft button).

Are you able to compile ML and run "hg bisect" to find out when the issue appeared?

Then if I don't get the light, it means files are corrupted? And why does emulator on my Rom go further... This is really. Intriguing.

[replace]

No clue what's going on for you Nex as all works fine here. Did you try any other sdcard or even from scratch yet?
(format in cam, download latest experimental build [extract & replace, run fir installer]

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"Error loading: ML/MODULES/100D_101.sym": File too large...
What's the file size?

Actually it's the same file as in Jul. Both files, even one from Sep, have even same modify date for me.

I did clean install from both Jul and Sep on two memory cards. Jul boots, Sep doesn't even bring light in camera. In qemu it at least goes to first screens.

I'd say test the nightly binaries directly - the differences from our environment would be (1) your ROM and (2) your SD card contents.

To install QEMU, use the "qemu" branch (follow the README).

edit: just added the above notes to the README:

https://bitbucket.org/hudson/magic-lantern/src/qemu/contrib/qemu/#rst-header-running-from-the-physical-sd-cf-card

The following debug options may be helpful: "-d debugmsg" or "-d io" (or both).

Ok - so when you know how to do it - its easy.

Went further than nothing - managed to see the camera screen + build info and crash with:
"Error loading: ML/MODULES/100D_101.sym": File too large...

Just before that - happens (for a split second, so I didnt notice at first):
ASSERT: FALSE
at EstimatedSize.c

Ps. Looking for the log file... O_o

Ps2. This message is not the right one.. As file is same as in Jul version that works.. I cant grab log - as qemu doesnt access .img file..

Ps3. Tested with my rom-dump + sd.img from my card.

I was before my morning coffee. Will check it out today's evening! Cheers man.

Should I use 100D branch? Or trunk?

Yea, it is strange - I am on Linux, and I have qemu installed - would need to know how to run our camera on it though.

Ps. I know that nightlies used to work for me, but now its dead silence.

Does nightly boot for you? For me only running version is the one from Jul 12.

I have tried disabling, reinstalling, and newer builds simply dont boot the camera. O_o

Hi, I'm a new user of ML 
I would like to know something: when we uninstall ML from one card by formating from camera (Format card, remove Magic Lantern), does the photos/videos who were on the card are removed too?

If you format the card you pretty much remove all it's content.

Sent from my SM-G920F using Tapatalk

Been using ML for some time now. After update to 1c version all seems smooth. With a set of self-compiled processing tools it brought video recording  or high dynamic range photography to the new level!

Thank you much for the great work.