A hard disk should never get beyond 85% capacity (especially a startup disk) as you will experience slowness and errors the further you get above that mark. If your startup disk is full and you get a message of warning from your Mac, this is a serious indication that you need to free up storage immediately.
Jan 30, 2014 There is a tool bar menu at the top of the screen and one of the options is Utilities. Select that and then select Disk Utility. When finished, select Startup Disk (on the top menu) and you can change the boot disk back to the internal drive. Wonder how many get in trouble by going on to 'continue'. I don't want to find out the hard way. Sep 26, 2018 Step 2: And then I use Disk Utility to make a Disk image of the Mojave USB installation volume. Create macOS Mojave installation disk image using Disk Utility. (Alternatively, if your Mac is already booted into OS X, you may be able to choose the installer drive in the Startup Disk pane of System Preferences, and then click restart. However, sometimes OS. MacOS High Sierra.dmg file format A 16 GB USB Flash Drive; After downloading the below files, move or copy the Unibeast and MacOS High Sierra.dmg file to the created Virtual Machine. Create bootable USB Mac disk utility. Download the MacOS High Sierra.dmg file, and extract that anywhere on your Running Mac Virtual Machine.
A DMG disk image file is Apple's container format for capturing entire drives or disks, similar to ISO for other platforms like Windows. It consists of data blocks that represent a physical disc. If you're on a Windows machine, you're limited in what you can do with DMG files. That's why you need third-party utilities to create a bootable DVD from DMG on Windows. This article explains two different methods to burn DMG files to amake bootable macOS installation DVD in Windows.
Method 1: How to Create Bootable DVD from DMG (Command Prompt)
This approach utilizes a tool called DMG2IMG, which converts DMG file into ISO, the universally more compatible archive format. This ISO file is then burned using a command line execution in Command Prompt. You don't really need any experience with disk images or command line work, but it will certainly help should something go wrong. If you're not comfortable with any of this, you can skip to Method 2, which showcases a powerful but user-friendly tool that does it all for you. But first, let's see how the Command Prompt method of creating a bootable DVD from DMG works.
Note: The older version of DMG2IMG is called DMG2ISO. Although the download is available in the link provided in Step 1 below, it is recommended that you use DMG2IMG instead. The utility has the ability to convert DMG into both ISO and IMG, based on your needs.
Step 1. Install DMG2IMG on a Windows PC after downloading the zipped win32 binary from this website. Unzip the file and run the .exe to install the program. You can also download DMG2ISO, but DMG2IMG is the recommended software to use.
Step 2. Open Command Prompt on your PC and execute the following command to convert your DMG into ISO. Be sure to change the file names as appropriate, and include the whole file path from the main directory:
dmg2img.exe c:downloadsexample.dmg c:downloadsexampleconverted.iso
Step 3. Now that your ISO file is ready, you can use the Windows ISO burning utility or a free application like FreeISOBurner to create a bootable DVD.
This DVD can be used to install macOS in virtual Windows environments with tools like Virtualbox. You can't use ISO files to install software in Mac, so if this is intended for a computer running Mac OS X or macOS, you will need to convert it back to DMG before you can install the program in question. If you're not confident that you can carry out the steps properly, then continue to Method 2.
Method 2: How to Make a Bootable DVD for Mac on Windows (DMGGeeker)
Conversion processes aren't always accurate and success rate is low for the first method. Many DVD are not able to be used to install macOS due to boot errors. Although DMG2IMG is a great tool, you may find that your resulting ISO file is corrupted and therefore useless. That means doing it all over again. Instead, you can try using DMGGeeker, which allows you to directly burn DMG to a DVD in Windows without having to convert the file. Such a disk can be used to boot a Mac computer.
DMGGeeker is an emerging star in the world of disk image file management software. It allows you to edit, add files to, delete content from, rename and do a lot more with DMG files on Windows without any conversion necessary. If you've been searching for the ideal DMG handling tool for Windows, your search has just ended. Let's see how the process works for creating a bootable media from DMG in Windows. It works with all recent versions of Windows.
Step 1Prepare for Installation
You can download it from the official site here. And then install DMGGeeker on a Windows PC.
Step 2Open DMGGeeker in Windows
Launch the application and click on the 'Burn' option. You'll see the other tools available for DMG files.
Step 3Create Bootable USB from macOS Install Image
Click 'Load DMG' to import your DMG file into the program. Insert a blank DVD and click Burn against the DVD option to write the DMG to the disk.
In three simple steps, your bootable DVD is ready. You won't find that many tools that are so easy to operate. DMGGeeker also has one of the highest burn success rates in its class, which means no wasted DVDs and no wasted time.
Summary
How to choose the rignt tool depends on what the purpose is. If you want to use a DMG file in Windows to mount a version of Mac OS X, then Method 1 will work. However, most of the time, you'll need a DMG to install an OS version on a Mac computer. In those cases, if all you have to work with is a Windows PC, DMGGeeker is the perfect application. It's simple enough for a novice yet robust enough for a professional, it contains all the tools you need to manage DMG files, and it's a life-saver if you only have a Windows PC to work with.
Dec 10, 2018 16:32:11 / Posted by Candie Kates to Mac Solution
Related Articles & Tips
A full startup disk is something that every Mac user will experience. This problem used to be known as “Startup disk full” notification. However, on newer macOS versions this message has been changed to “Your disk is almost full.”
But luckily, it’s a problem that has many solutions. And in this article, we’ll go over:
However, we also understand that some people are short on time and just want to fix startup disk full. So, if you’re not really interested in what it is and why it happens, just skip the next two sections and head to “How to Clean Your Startup Disk”.
Or, even better, if you’re looking how to clear space on Mac, we’d highly recommend a utility called CleanMyMac X. It'll help you clean up gigabytes of disk space in just minutes (you can download it here).
Note: if you’re running macOS Sierra (or higher), it has a built-in option of Optimized Storage that is supposed to solve the problem of the full hard drive by moving files into the cloud.
By clicking 'Manage' you can open the menu and see what Optimized storage offers. However, it moves junk and useless files to the cloud together with your files, and eventually you end up paying for iCloud storage to store junk. So we still recommend getting CleanMyMac and actually dealing with extra files rather than simply moving them.
Now, with all that said, let’s get into what exactly “Your disk is almost full” means.
Understanding What “Your Disk is Almost Full” MeansWhat is a startup disk?
A startup disk, as taken from Apple Support article, is a volume or partition of a drive that contains a usable operating system. Still confused? Let’s break it down for you.
Your Mac hard drive consists of disks (or partitions). Each disk (or partition) has your Mac data on it, which consists of your operating system, applications, etc. Most Mac users have just one disk but power users may have two or more.
Let’s look at an example of a Mac with only one hard disk:
A Mac with two disks will have the storage divided between them. The Mac drive with the OS on it is the startup disk while the other drive is just used for storage of files. It’s possible to have multiple startup disks, but most Macs will only have one.
Why your disk is almost full?
This is easy. It’s a lot like why is your fridge full? There is no more space! Your disk is almost full and this is very bad news for any drive. A hard disk should never get beyond 85% capacity (especially a startup disk) as you will experience slowness and errors the further you get above that mark.
If your startup disk is full and you get a message of warning from your Mac, this is a serious indication that you need to free up storage immediately.
What to do when your disk is almost full?
So how do you fix your almost full startup disk? The same way you solve the problem of a packed fridge - you need to clear up space, of course. To make more space on your startup disk you will need to:
How to open a dmg file on windows 10. So, now that we know what a startup disk is, we need to talk about how to fix it. Let’s take a closer look at your disk space to see exactly what is causing your disk to be almost full.
What’s Causing 'Your Disk Is Almost Full' Alert?
Short version: Take a look under-the-hood of your Mac.
Before we can see what is taking up space on your startup disk, first we have to find it:
After selecting this box, your desktop should now show the hard disks on your mac, in the form of icon(s), like this:
These are disks on your Mac that you can “startup”, this is because they have operating systems on them. If there is more than one of these hard disk icons that show up on your desktop, it means you’ve got multiple hard disks on your Mac. If you only have one, skip the down to “What is taking up all of my startup disk space?” section.
If you have more than one, continue with the next step:
Click on the Apple icon at the top left of your screen System Preferences > Startup Disk.
Here, again, you’ll find your hard disk(s); they’re probably named something like MainSSD or MainHD. It will also display “OS” and the version number of that OS. If you have more than one OS drive, your startup disk should be the one with the latest version of macOS running on it, but we’re going to make sure of that in the next step.
I only have one and it looks like this:
To make 100% sure that you know what drive is your startup disk, follow these steps:
See how my version number in the “About This Mac” window matches the number in my Startup Disk section? Yep — That’s my startup disk. Found yours? Good.
What is taking up all of my startup disk space?
Now that we’ve identified our startup disk, let’s take a closer look at how to clear up space on Mac:
Take a look at my hard drive disk:
I’ve got 500GB of storage, and about 275GB of it is free space.
So, how big is your hard disk? How much free space do you have (if any — *gulp*)? And what’s taking up the most space? It is important to consider drive capacity and data storage needs for future storage plans — we’re not just here to fix the problem, for now, we’re going to make sure you never have this problem in the future as well.
Now that we have the knowledge, it’s time to take action and fix your Mac’s “Startup Disk Full” problem.
How to Clear Space on Mac (11 Ways)
Let’s go over 11 things you can do to help fix 'your disk is almost full.' These should also give you other ideas as to how else to fix it — You know your Mac better than we do!
1. Clear system storage on Mac
System storage cleanup sounds like a serious undertaking. But, technically, it boils down to just one thing: having the courage to scrap the old files.
Is Dmg A Startup Disk Drive
2. Clean up cache files on your MacCache files are files that help your Mac run programs a bit more smoothly. Think of them like blueprints for a house: your Mac has the blueprints for how a program is supposed to load/run/look, so it loads it faster; without them, it’d be like building it from scratch. However, over time, these caches can start to take up some serious space. Periodically, removing them can help free up space. And don’t worry, your Mac will create fresh, new ones after you restart your Mac. To remove caches:
Deleting cache files is generally safe for your Mac. And once you delete them, the applications and processes you run on your Mac will generate fresh, new ones. But, when deleting, worry more about removing them based on size rather than just removing all of them.
Also, you can check the /System/Library/Caches folder as well, but it might be better not to touch this folder without knowing what the items are. A utility that correctly cleans up these files (and pretty much everything else on this list) is, you guessed it, CleanMyMac X. It cleans up even your system caches with just a few clicks. By the way, this program is notarized by Apple.
Oh, and once you’re done with this list, restart your Mac so it can create these new cache files.
Read more: How to Clear Cache on a Mac?
3. Get rid of localization files
Localization files are also known as “language packs.” Lots of apps come with other languages that you probably don’t need. To clear up space on your Mac, delete the ones you don’t need:
From here, go to Contents > Resources and look for files ending in .lproj. These are the languages your app has just in case you want to use it in another language, like Spanish (es.lproj). Drag the ones you’ll never use to the Trash.
Again, a safer alternative to this would be to use CleanMyMac X. It gets rid of all of them with a click. No digging through application folders, just a cleaner Mac.
Read more: How to Delete Language Files from macOS?
Is Dmg A Startup Disk Windows 104. Delete old iTunes Library backups
The more recent versions of iTunes create backups of your iTunes Library, whenever you update the application (which, to me, feels like every day). You can trash these old iTunes Library backups by:
They’re all dated, just delete the old ones you don’t need anymore.
5. Remove old iOS backups
Backups can tend to take up a lot of space. You can find and remove them by:
Get rid of all the old, outdated backups your Mac has been storing for a bit more extra space.
6. Remove iOS software updates
You can find all the unnecessary data for your devices by:
Macos sierra 10.12 5 dmg download. In the menu left of the “Disk Utility” window select the USB Drive “Untitled”.3. Open Disk Utility2.
Delete downloaded files for any of the devices that you are not using anymore, or ones which software just already updated. Remember that after any of your devices have been updated, you don’t need those files.
Read more: How to Delete iOS Software Updates from Mac?
7. Remove unnecessary applicationsThis isn’t often overlooked, but definitely under-appreciated. Removing old, unused applications is a great way to get some extra space on your startup disk. Go through your applications folder and get rid of all the apps you rarely use. But make sure you remove them correctly, don’t just drag them to the Trash. If you do, you’ll leave behind tons of leftover parts and pieces, and we’re trying to get back startup disk space — It’ll kinda defeat the purpose, no?
This is another place we’d suggest using CleanMyMac X. To completely remove any application, just launch CleanMyMac X, click Uninstaller, select your application, and then click Uninstall. You won’t have to search all over for development junk that’s left behind when Trash’ing an application. It’s incredibly easy and saves you tons of time.
8. Clean up your photo library
Photos, photos, photos. Talk about tons of space! First and foremost, select only what you can get rid of, like image copies and maybe some photos that were mistakenly taken. You know, ones of the ground or something?
Ok, once your own files are taken care of, it’s time to get rid of the files your system created. In Photos for Mac, it’s cache files. In iPhoto, it’s service copies. Both are a pain to find, but here’s how you can get rid of them.
Photos cache includes iCloud local copies (created when you view pics from your iCloud photo library on a Mac), Faces cache (generated when you use Faces), and other app-related cache. You’d be surprised how much all that takes up if you regularly use Photos. For OS versions prior to macOS Sierra, here’s the path to locate the cache:
You should now see a lot more folders in your Finder window. Photos cache sits in these folders, but the tricky thing is that it’s really hard to say what is safe to remove and what isn’t. Deleting the wrong file can compromise the performance of Photos, which is why we highly suggest you use CleanMyMac X to clear the cache and system junk. It only removes files that are safe to delete, never a critical file or important image.
You can download CleanMyMac X for free and see how it works, it’s so much safer than cleaning up system junk manually.
9. Clean up your Downloads, Movies, and Music folders
Have a closer look at these three folders. You’d be surprised at how many downloads can accumulate when you aren’t paying attention. Clean out anything you don’t need (or don’t know) and organize the rest. It’ll take a load off your mind to know that there’s nothing excess there.
The Movies folder can be a pain, not because you’re searching through tons of files, but it can be difficult to choose what to delete. Personally, I never want to get rid of Top Gun. It’s amazing. I watched it 3 times in a row last weekend. But alas, sometimes you need to make sacrifices for the health of your Mac. Though, what you can do with movies you want to keep is to archive them. So, archive what you wish to keep and remove the rest.
How to archive/compress a file
Archiving a file doesn’t mean to store deeper into the abyss of your Mac — but to turn the file into something smaller, into a compressed file (like .zip or .tar). By archiving a file, you shave off some memory. Archiving is essential for things you want to keep on your Mac, but don’t often use, and helps you clear up some space. And that’s what this is all about right? We’re essentially doing the hokey-pokey on your Mac. To archive a file, just:
The last place to sweep through is the Music folder. Find and remove duplicate music files first, and then clean up all the songs you downloaded on a weird Sunday afternoon cleaning the house.
10. Clean your Desktop
“Clean my desktop… but why?” Because some people’s desktops are hard to look at, that’s why. Organize your desktop and get rid of the stuff you just don’t need on there. It looks better and helps your Mac act a bit faster (I don’t know the rocket science behind this one, but it feels too good to be false). Your Mac doesn’t waste time loading all those icons and junk, just… Just clean it, please.
11. Empty out the Trash (No, we’re not joking…)Seriously: It may sound incredibly basic, but it could free up a surprising amount of space. I forget to do it all the time. The thing is, that when you delete something, your Mac doesn’t remove it — it just moves it to the Trash. Plus, you’ve probably deleted way more than you realize, and all that could be sitting in the Trash, wasting space. So get rid of all that junk by emptying the Trash:
And, the easiest step is done.
A few more tips to free up space on Mac
Some files often have two or more copies. Check out Gemini 2 — it searches for identical files and folders all across your Mac.
2. Manage your Optimized Storage
This option comes with your operating system starting macOS Sierra. Go to the Apple menu > About this Mac > Storage
Now, click on Manage to reveal the space-saving options:
3. Erase your Junk Mail
Open your Mail app, and click Mailbox in the upper menu. Here you can erase spam and already deleted items.
4. Delete system junk with CleanMyMac X
Again, this is an incredible utility when it comes to cleaning your startup disk. And this app is notarized by Apple, meaning it's safe.
To avoid the annoying “your disk is almost full” error, download the free edition of CleanMyMac X.
Once you've installed the app, click on the System Junk tab. It will clean up caches, logs, language packs, binaries, duplicate photos, outdated backups, Trashes, and more. Full Startup Disk Prevention
We’ve cleaned up a few things on your Mac, and hopefully it’s given you more ideas as to what else you can clean. But, let’s take a look at how much space you saved from cleaning the list above. Remember how we checked your Mac’s free space? Open that window again and see how much space you’ve freed up:
You’ve probably got a bit more space, and you’ll want to keep it that way. The only way to prevent a “your disk is almost full” is by keeping your Mac clean. We’d recommend a complete cleaning every 2–3 weeks.
Say goodbye to the 'Your startup disk is almost full” message.
So, we’ve now covered everything that we wanted to share with you. Hopefully, this has helped you fix that full startup disk problem. Your startup disk should now be quite a bit lighter (we hope). Oh, and if you liked this article, get social with it to help others in need. And if you really liked this article, subscribe to our email list — we’ve got more guides on the way. And we’ve also got a utility that’ll help you out a ton in the long run: CleanMyMac X. It helps you clean your entire Mac with just the click of a button. It’s incredibly easy to use and works like a charm.
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