If you need to read data from a SD card that has an
Raspberry Pi OS
on it only one partition is visible for a Windows computer by default.
This is because Windows by default only can read
NTFS
and
FAT
file systems and Raspberry Pi OS uses
ext
(extended) file system.
To come around this Windows needs something that can understand the
ext
file system.
### Example of ext file system programs or drivers:
-
https://www.diskinternals.com/linux-reader/ (Program) Free version can only read ext filesystem.
-
https://sourceforge.net/projects/ext2read/ (Program) Free
-
https://sourceforge.net/projects/ext2fsd/ (Driver) Free