Converting CR2

[Taiyosan]

Just discovered that the Canon RAW files shot with a Canon 20D in 2005, are no longer openable. (is that a word?) I have a few thousand of them and in '05, '06, etc., i opened them, worked on them in PS and saved them. Now i want to work with some of them and they are not viewable, openable, etc. Not with Canon software, Adobe DNG Converter, etc.. I don't know what to do ... do one of you know what to do? Who to ask? Where to search? Have you had this kinda problem?

The larger question, how did 5000 Canon files get corrupted and will that happen again as the years go by (yes, i'm converting them to dng, but not so at that time) ??? i've no idea how to address. Yes, all files are backed up in triplicate but they are copies of the unopenable files - sigh ... all help appreciated.

Thank you,

Taiyo

[fototaker70D]

great shot by the wife!!! May I ask what the resulting image filesize was? I have TRIED using DPP so many times without any real useable success. 😞 All I want to do is get an image of the moon, and crop /convert it) 

[RobertTheFat]

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@fototaker70D wrote:

great shot by the wife!!! May I ask what the resulting image filesize was? I have TRIED using DPP so many times without any real useable success. 😞 All I want to do is get an image of the moon, and crop /convert it) 

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As displayed, it's 420 x 600 pixels. The RAW file from which it was converted (to JPEG using DPP 4 on a Lenovo laptop with Windows 10 Pro) is about 27 megabytes. The picture was taken with a 7D Mark II.