When a new version of macOS comes out, I usually upgrade my computer relatively soon. I like having access to the latest features, and significant macOS release upgrades are generally trouble-free. That hasn’t been the case with the newest version, Catalina. The trouble stems from the fact that Catalina doesn’t run 32-bit applications. While most major software in the system is now 64-bits, there are still some stragglers — especially legacy apps and drivers that haven’t been (and likely won’t be) upgraded.

That’s why I waited longer than usual before upgrading to Catalina: there was one application in my system that was 32-bits, the driver for my Fujitsu ScanSnap S300M scanner. I knew this driver was incompatible because every time I launched it (under Mojave, the previous version of macOS), I’d get a warning saying that the app would not run in the future. (Here’s a way to learn which apps won’t work: under the Apple menu, go to About this Mac > System Report… > Legacy Software.)

Without this driver, the scanner is useless — even though the hardware is perfectly functional. This device is an important part of my workflow; I use it every other week to digitize most of my paper documents and correspondence. Fujitsu no longer sells this model and has no plans to release 64-bit drivers. So I was stuck. I had two choices: I could hold off on upgrading the operating system (for a while), or I could buy a new scanner. I didn’t like either option. Sooner or later, I’d have to upgrade the OS. And as I said, the scanner itself was in perfect condition; I didn’t need a new one. What to do?

It turns out there was a third option: look for an alternative driver. I found a third-party application called VueScan that works with a range of scanners, including the S300M. It’s been working well for me; the only downside is that it’s a bit slower than Fujitsu’s driver. But given my use of the scanner, it’s not slow enough to merit buying a new device.

Thus far, Catalina has been great. I’m especially enjoying the new Sidecar feature, which allows me to use my iPad as a second screen when I’m on the go. So far, everything is working for me — including my old scanner. The lesson: if you’re contemplating upgrading to Catalina, but are holding back because of legacy software on your system, consider looking for alternatives.