On 2010-07-28 16:52, Sam L wrote:
My backup strategy so far has been very basic: [...]
If it ain't off site, it ain't a backup.
1. both thumbnail and full image will not open 2. thumbnail will display, but full image will not open
What does "will not open" mean? What messages do you get? Are these PEFs, JPGs, or what? What tool are you trying to use to open them?
The scarier symptom is when the thumbnail appears to be fine but is in fact corrupt, because there is no easy way to verify if the files were backed up successfully.
What do you mean? How are you backing up? Since you're just copying to an external drive, you can always do a file-by-file comparison afterwards.
Anyway: is there any way that you can verify if a jpeg file is working correctly / not corrupt? Is there a way to verify that your "copy" operation was successful?
For the command-line inclined on Windows, the "comp" or "fc" commands will do it, or simply add "/v" to the (x)copy command to start with. Similar options are available for Linux and Mac, too. For those preferring GUIs, there are a variety of free software tools out there for any given platform that will compare the files after copying. WinDiff is one for Windows.
(I have no evidence that the copy operation is what corrupted my files, so maybe I should just continue on with my copy operations and trust that they are okay).
If it ain't verified, it ain't a backup. Trusting that they were OK may be part of what got you in this mess.
-- Thanks, DougF (KG4LMZ) -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
