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DropDMG

Should you use a disk image or a volume?

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.

January 7, 2023 Macs, Technology

A user’s guide to Disk Images

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.

July 11, 2022 Macs, Technology

Securing sensitive data

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.

December 29, 2020 Macs, Technology

A brief guide to disk image files

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?

September 19, 2020 Macs, Technology

Snug sparse bundles work better, but…

Is it better to make sparse bundles ‘snug’, sizing them so that they don’t have as much free space? What if you then need to resize them?

May 16, 2020 Macs, Technology

Sparse bundles leak space

They readily grow in size up to their maximum. But getting them to shrink when contents are reduced isn’t as easy.

May 15, 2020 Macs, Technology
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