What hinders MakeMKV disk detection?

[KushnomGhatak]

What could be the possible reasons for MakeMKV, a software used for ripping and backing up DVDs and Blu-ray discs, failing to recognize the disk drive on a PC despite the PC itself successfully detecting the drive?

[Woodstock]

MakeMKV requires that the drive be detected as an optical disk. A lot of times, a disk is "detected", but isn't FULLY detected. It happens a lot with modern Windows, to "protect" you. Often, a reset will allow proper detection.

[MrPenguin]

What could be the possible reasons for MakeMKV, a software used for ripping and backing up DVDs and Blu-ray discs, failing to recognize the disk drive on a PC despite the PC itself successfully detecting the drive?

On Linux, MakeMKV needs read/write access to each drive's /dev/sgN and /dev/srM device nodes (where N and M are integers). So make sure that these device nodes exist, and that you have suitable permissions. E.g. my user ID belongs to a group called "cdrom" such that:

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$ ls -als /dev/sr0
0 brw-rw----+ 1 root cdrom 11, 0 Feb 20 08:52 /dev/sr0

$ ls -als /dev/sg1
0 crw-rw----+ 1 root cdrom 21, 1 Feb 20 16:30 /dev/sg1

You might also need to load the sg kernel module before your /dev/sgN nodes exist:

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# modprobe sg