If you are one of those for the past few months they have cooperated using the iPad as a laptopBy taking full advantage of its USB-C port and mixing the tablet and using the Mac, you may have trouble connecting some external hard drives. It doesn't happen to all, but in some cases those discs may not mount properly on Macs.
It was something that happened to me recently, and after doing some research I was able to find a reason for this. It's not a mistake, though there seems to be some learning conflict between iPadOS and macOS with ExFAT formatted disks. And this discrepancy is evident when we use a disk on certain devices.
When macOS does not want to install the disk until it is analyzed
It all starts when we connect, through a hub or adapter, to the powerful external ExFAT file system on the iPad. IPadOS reads that disk well, but after removing the disk and connecting it to a Mac, MacOS does not install it. When we access the Disk Utility request (which is located in the app resources folder) we will see that an external disk is available, but it does not appear. A manual attempt to do this gives us this error after a few wait times:
What's happening here? The good news is that it's not that bad. After the disk was used by iPadOS and connected to the Mac, for some reason MacOS realized something was wrong. Their reaction is not to insert a disk and perform a procedure called fsck to perform the analysis
If we open a terminal window and kill that process, which is not recommended, macOS will override the disk but in read-only mode that cannot guarantee the authenticity of the data. You will instruct us to copy the entire contents of the disc to another part and then re-do something. If we do not do anything and wait a long time, the disc will end the ride without any problem after the analysis process introduced by macOS ends normally.
Right now the disk can be used as though it doesn't exist, but if we use it again on the iPad and then plug it in again on the Mac we'll have to go through the same sequence of events. It sounds like there is some kind of inconsistency or conflict with the file system, or at least some disk models are not ready for you. So far, for example, I didn't have this problem pendrives HFS + formatted.
What can we do to avoid that? Well, for now, and without making sure it's organized, try having a disk in another file format or look for other options such as cloud storage. I hope Apple developers will eventually find this problem and an iPadOS update will fix this problem.