looking to be sure I can recover data from a corrupted sd card. I don't want any one recovery method to stop me from being able to recover the data. Due to this, I am looking to bit level backup the sd card. If one fails I should be able to recover the card and try again.

However, I am a bit lost as to which product actually does that level of a backup these days. No one seems to use the old terms for descriptions.


https://sourceforge.net/projects/win32diskimager/ fits the bill I guess.

Note that any decent file recovery tool can do this too, most times with the free demo version even. Examples ReclaiMe, DMDE, R-Studio.

Linux: ddrescue, example/guide: https://www.recoveryforce.com/forums/viewtopic.php?t=245

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