I have installed Kali Linux on a hard disk. I removed it and connected via USB to my MacOS (also tried WindowsOS). I want to take backup of files in Kali Linux. But the hard disk is not detected. How to solve this?
After comments, diskutil list
results
disk1(synthesized)
is a virtual drive, that your Mac is currently booted from.disk0
is the physical source of that, which I can see from the FFFFF partition that you've already messed with it & managed to break, quite badly. Your USB is nowhere to be seen. I'm back to "it's broken". Your physical boot drive is also broken [mis-formatted], but for different, unrelated reasons.