[Borgbackup] Can I use the not-overwritten part of a dd-overwritten borg backup?

[Jeffrey Brown]

Hello,

There's an external hard drive where I back up lots of stuff using borg. It
was around 54 GB last I checked. I accidentally overwrote the first chunk
of that drive with NixOS 20.09 using dd. Most of the files I don't mind
losing but a few are really important. (I'll use the cloud in the future.)

Is it still possible to extract anything? Since I discovered the problem
(and navigated to the disk in Dolphin, and stared in disbelief) the disk
has been unplugged and untouched.

Thanks you.

-- 
Jeff Brown | Jeffrey Benjamin Brown
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