Disk images originated in the 1960s, and are still valuable tools in modern macOS. They have their limitations, though, and in some cases should be replaced by APFS volumes.
Spundle
If you try compacting a sparse bundle, Spundle and hdiutil could return error 1. This explains why, and fixes Spundle to get over it.
They have more options than most new cars. What are they, how do you use them, how to pick the most appropriate, and which tools to use.
Minor updates to Spundle and Dintch. A bug in SilentKnight and LockRattler. Dropping support for El Capitan and Sierra, and a few obsolete apps.
Sparse bundles, sparse files, and sparse matrices explained in a nutshell, and how a sparse bundle could have a band which is a sparse file containing a sparse matrix.
Securing sensitive data from access by others, and safeguarding it from loss of damage, is common. Solutions range from encrypted images to specialist external disks.
How to store a 400 GB sparse bundle on a volume which only has 200 GB free space – provided that you don’t actually use the space that isn’t there.
So many different types, from read-only disk image .dmg files, to sparse bundles and DVD/CD-R masters. Which to use, and how to create them?
Now runs properly on all versions of macOS from Sierra to Big Sur beta 3, on both Intel and Apple Silicon Macs.
Important update for all users, which addresses several bugs in setting the maximum size of sparse bundles.
The Eclectic Light Company 