i have a M.2 drive, with a PCIe_x4 adapter from Startech...
the partition was formatted as hfsplus, with hfsplus-tools in Kubuntu 20.10 or pearOS 12.0 "KDE Debian"
but is Not detected by Ext2Fs 0.69,
partition is detected by Windows8.1x64 Disk Manager as Unallocated.

Strange thing is that i have other HDDs, formatted as HFS+ in real OSX,
and are detected OK by Ext2Fsd 0.69 and Windows.

there is something strange about Linux hfsplus, that Ext2Fsd does Not detect, and Windows detects as Unallocated.
but works Ok in Linux,
haven´t tested if works in OSX.
testing Windows8.1 first, because the Samsung Magician SW for Windows.

Apple released hfs+ and Apfs as Open source,
Linux version is a translation from OSX to Debian.

Linux partitions ext4 are detected as Linux,
Linux hfsplus is too crazy.

 

Last edit: Juan Pablo Cuervo 2021-08-16