#Catalina mac disk cleaner update#

This shouldnвЂ™t make any practical difference, but may be confusing if you ever need to refer to volumes using those numbers.

However, as of 10.15.2 that doesnвЂ™t work, and results in the creation of yet another Data volume named Macintosh HD вЂ“ Data вЂ“ Data.Дeleting the Data volume does make a difference to the end result: when you delete the Data volume then add it back, its Unix-style volume number has changed, perhaps from 2 to 1, and that of the System volume goes from 1 to 5. If youвЂ™re performing this clean re-install to try to fix a problem, and donвЂ™t want to make its current data particularly inaccessible, then all you should need to do is select the Data volume and erase it when you re-install macOS that should overwrite everything on the System volume, which is, after all, read-only in normal use. If that happens, restart into Recovery mode and repeat the process of erasing the System volume, which should succeed on the second try. This is described by Apple in this detailed support note, but commonly fails with an error reporting that вЂThe volume вЂњMacintosh HDвЂќ on disk2s5 couldnвЂ™t be unmounted because it is in use by the process 734 (kextcache)вЂ™. Once thatвЂ™s deleted, youвЂ™ll then need to erase the System volume, by selecting it at the left and clicking on the Erase tool. In Recovery Mode select the Macintosh HD - Data volume at the left of Disk UtilityвЂ™s window then use the Delete APFS Volume command from the Edit menu, or use the shortcut by clicking the вЂ“ tool. To perform a clean re-install in Catalina, once in Recovery Mode, you need to delete your Data volume, thatвЂ™s the one named Macintosh HD - Data, or something similar if youвЂ™re using a custom name, and to erase your System volume. Because you want to re-install macOS, the logical thing to do would be to wipe the System volume, which suggests that you could get away with retaining your own files on the Data volume through a clean re-install. The first of those is the read-only System volume, and the second the read-write Data volume. Try this in Catalina and the first thing youвЂ™ll realise is that you donвЂ™t just have a single boot volume now, youвЂ™ve got two, one called something like Macintosh HD, the other Macintosh HD - Data. What determines the source and version of macOS to be re-installed are the keys you hold down to enter the mode in the first place. You boot into Recovery Mode, use Disk Utility there to wipe your boot volume, then re-install macOS from the main window. In Mojave and earlier, a clean re-install is straightforward if time-consuming. ItвЂ™s clean because it isnвЂ™t simply installed on top of your existing files, and itвЂ™s a re-install because those system files are there already.

If you're short on disk space we'd suggest you take it for a whirl, too.When you need to go back to square one and return to a вЂcleanвЂ™ installation of macOS, simply re-installing macOS is insufficient: what you need is a clean re-install.

We've been using OmniDiskSweeper on our Macs for years and thankfully that's going to continue with this update. That's Catalina doing what it's supposed to so don't worry when the dialog boxes start flying. This is because it's looking at the sizes of all your files, which includes the files that contain your contacts.Д«ut it's not actually reading your contacts, files in your Documents folder, and so on - it's just looking at file sizes.Д«ecause the app needs to dip its toes into every corner of your drive Catalina will shout about it, making sure you know what's happening. The updates for Catalina include a Dark Mode About Panel, fixed handling of Catalina volumes, and removal of an unneeded notification.Д«ut do note that Catalina will ask for permissions for OmniDiskSweeper to access various things - it might ask, for instance, if it can access your contacts. You can thank Catalina's new security settings for that. But as the team over at Omni points out, you can expect to see a few warnings the first time you run this thing. It's fully Catalina compatible, including a gorgeous Dark Mode implementation.

#Catalina mac disk cleaner update#

The OmniDiskSweeper v1.12 update is now available for download, as announced on The Omni Blog. OmnniDiskSweeper might have one of the most difficult app names to type, but it's a great way of reclaiming disk space. OmniGroup makes some of the Mac's best productivity apps, but it also makes one of the best disk cleanup apps, too.