.dmg refuses to open now???
By StormNinja586 · QUESTION · About MacBook Pro M4
I keep some files in .dmgs for organization, but one of them is randomly refusing to open now. After I try, it errors and says
"The disk image couldn't be opened. Failed to mount filesystems."
And that's it! A system restart didn't do anything, and I can still open other .dmg files. I can't comprehend what could have changed; I'm not full on storage and didn't update anything. It was opening fine just last week.
Is my file corrupted?? Does anyone know how I can fix it??? There's thankfully nothing super critical on there but it's a lot of files I would need to remake if I can't recover it :')
Thank you
8 upvotes · 4 comments
Comments (4)
StormNinja586: I don't get it, what do you mean you keep files in a .dmg for organization?
What format is the disk image? Both the image format and the format of the filesystem? If its HFS+, you might be able to use something like DiskWarrior to access the data on it.
Other than using encrypted disk images to
BoldVibe231: If you are running macOS 26.3.1 it might be the HFS+ bug that affected both external disks and disk images using the file system format. Try updating to 26.4
ChillDragon399: I can't remember the times and details, but the dmg file format changed at some point and at a later date, Apple released a new version of macOS that would corrupt these files when you tried to open them. It was a small scale issue and as far as I know there was never any fix released.
If the dmg w
SwiftMaker899: Try opening with disk util
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