Questions tagged [disk-image]
A file with the .dmg extension, often used for installing applications.
17
questions
1
vote
0answers
11 views
Mount Read-only Disk Image Without Breaking Spotlight?
I have a disk image with my main media library inside it, but I normally only mount this as read-only, as this prevents applications from touching anything inside (which can cause a lot of band files ...
1
vote
0answers
35 views
How to copy Time Machine directory when rsync can see files but ls can't?
I recently used GNU ddrescue to save a 6TB drive that was having troubles. When I would try to mount the drive, fsck_hfs determined it couldn't be fixed (it was trying to rebuild the catalog b-tree, ...
2
votes
2answers
337 views
How do I skip verification of a .dmg file?
I have downloaded a dmg file but when I click on it it keeps verifying.
I've also tried to go to /System/Library/CoreServices/Installer.app but I can't click on the .dmg because it is greyed out.
...
0
votes
1answer
26 views
How do I remove a disk image that I created myself?
I went to disk utility and created a new image with 1.5 GB of my hard disk.
Now I want to remove it and have all the space back for my Macintosh HD. Nothing seems to work. If I eject it, it's not ...
1
vote
1answer
879 views
“Create disk image” disabled
My 2015 MacBook Pro has become unbootable after software update for 10.14.5 failed to install. Because I do not have a recent backup, I would like to create a disk image of the entire boot disk. ...
0
votes
2answers
173 views
How long does it take to convert a cdr to an iso? [closed]
I ran the command
sudo dd if=/dev/disk# of=/Volumes/Path/To.iso
at about 6am this morning. It's now almost 2pm and the command is still running. The cdr input image is about 300GBs.
I have a Late ...
2
votes
1answer
315 views
Using dd to image a corrupted Windows disk?
What is the proper way to use dd (or anything else - asr?) to create an image of a corrupted yet readable Windows disk?
If what I am using (see below) is correct, then is it possible that an image of ...
33
votes
1answer
5k views
What does a .dmg verify?
Whenever I open a .dmg, my computer says that it is Verifying… for a moment. I'm just curious as to what it is doing at this time. Is it running a checksum, checking if it is the same as the online ...
1
vote
2answers
127 views
How can I stop DiskUtilities from requesting permission every time I try to create an image from a CD
I have a big stack of CDs from the 90s that I want to keep the data from, but don't want the physical CD anymore. So I'm using Disk Utility to create the disk images.
Every time I do (by right-...
4
votes
2answers
2k views
Unable to eject disk images or drives in High Sierra
I am running a MacBook Pro Early 2015 13" on High Sierra 10.13.5, and keep getting the "X disk cannot be ejected because one or more programs might be using it" message, when apparently there is no ...
5
votes
2answers
2k views
Create disk image which can be read on Windows
I am interested in creating a disk image, using Disk Utility (or any other software) on macOS which can also be read on Windows.
Disk Utility provides the ability to create .dmg, .sparseimage, and ....
0
votes
1answer
3k views
macOS High Sierra 17G2112 vs 17G65
I was trying to use
installinstallmacos.py to create an installer disk image for High Sierra 10.13.6 (I need an offline installer and downloading from App Store only downloads a ~4MiB stub file with ...
1
vote
1answer
138 views
See a log of all DMG files that were mounted
Today I saw for a very brief moment (like a fraction of a second) an alert telling me that some “BaseSystem.dmg” file was being mounted, even though I wasn’t trying to mount anything, nevertheless a ...
0
votes
1answer
493 views
Recover data in Sparsebundle disk Image
I'm afraid I'm out of luck but... I followed the directions in various places,
# hdiutil -nomount -noverify -noautofsck SecureRecords.sparsebundle
/dev/disk1
# fsck_hfs -drfy /dev/disk1
...
1
vote
0answers
350 views
MacBook Air High Sierra disk image not recognised couldn't open
I created a disk image from a folder using disk utility and now when I double click it to open it i get an error message saying image couldn't be opened. Image not recognised. What can I do?
2
votes
1answer
3k views
Is a Sparse Bundle image or Sparse Image better for many files 3 TB external hard drive 4TB?
I'm on a Mac and Windows PC, and have many files (videos, photos, documents, iTunes Backups, but without Windows or macOS system backup)
the size is 3TB or larger in my old external hard drive.
I use ...
1
vote
1answer
4k views
How to Mount a Sparsebundle Disk Image from Time Machine Backup?
I have several sparse bundle disk images on my system, used for various purposes (mostly to prevent Time Machine from backing up the entirety of very large files).
However, I'm planning to ...
