One of the things that's bedeviled me about running dual-boot Linux and Windows is that each has their "My Documents" system. Because I switch back and forth, I want to have a single "My Documents" for both operating system, no matter which app I use.
One solution is to use a removable drive, such as an SD card or USB key, as the common location for files. But this does not work well for large numbers of files, such as gigabytes worth of photographs stored by Picasa.
After installing Picasa 3 on Mint Linux, I got it to scan "/" for photographs. "/" (root) is the topmost folder in the Linux operating system. After it found some miscellaneous images, it began finding the 2000+ photos I took on my recent trip to Belgium and Germany.
"Aha!" I thought, "it must have found where Linux accesses the Windows partition." I knew Linux could do that; I just didn't know where it was "hidden."
To determine the Linux name for location of the photos on the WIndows partition, I right-clicked a photo and choose Locate on Disc. That opened the Linux file explorer to the folder, giving me the path.
The path to the Windows partition is:
Where "thisLG110" is the name of the Windows partition, and is a conjunction of two names: "this" is the name I gave the drive, and "LGX110" is the Windows name I gave the computer.
The path to my pictures on the Windows partition is /media/thisLGX110/Users/rhg/pictures
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I name the C and D drives of my computers "this" and "that." The names come from the 1972 Cat Stevens' "Catch Bull at Four" album, where he had all song titles on one side of the record, identifying the sides as This and That.