Disk Images in OS X are a great way to back up, archive, or protect any file or folder on your Mac® OS X. If you want to create a Disk Image on Mac® OS X™, w. You can mount and unmount drives, volumes, and disks from the command line of MacOS and Mac OS X. For many users, the easiest way to unmount a drive in Mac is to either just drag a volume into the Trash, use the eject keys, disconnect the drive, or use one of the force eject methods.
It’s been almost two years since I last wrote for Low End Mac, but my love of all things Apple hasn’t waned. Most recently, I’ve become the proud owner of an iPhone 3G, which may finally stop me hunting for an elusive MessagePad 2100 on eBay.
What did interrupt my Classic Mac activities was a number of hard drive issues that required multiple reinstalls of various versions of the Mac OS on different machines. It was more of a hassle than a problem, but it became a serious sticking point once I upgraded to Leopard.
Making Boot Disks
In order to keep our classic Macs alive, we need ready access to boot disks and install disks so that when the need arises they can be recovered. Apple very kindly makes various versions available for free – most notably System 6.0.8 and 7.5.3. You can also find useful items in their archive, such as the 7.5 Network access disk, which allows you to boot into System 7 from a floppy.
Depending on the file format, preparing these boot disk follows various routes, but most of them rely heavily on one of the following three items:
- Disk Copy 6 or Disk Copy 4
- .sea self extracting archives
- .smi self mounting images – often split across multiple files
And herein lies the problem: Multiple .smi files need to be copied to one location – in other words, you should be able to boot the Mac you want to install them on. So before installing the Mac OS from .smi files, you need to make a boot disk using one of the other two methods.
But both Disk Copy and .sea files require the Classic Mac OS. Earlier this year, I found myself with three old Macs, none of which would boot, and a G5 with Mac OS X 10.5 Leopard installed that was seemingly useless for this task without the Classic environment.
Making Boot Disks Using dd
![Image Image](https://crystalidea.com/assets/images/blog/screen_dmg2iso.png)
All was not lost due to one simple fact – Mac OS X is a Unix variant, and therefore it has all of the standard Unix tools available. One of these can be used to make boot disks. The dd command can be used to duplicate any disk, and it can be used to take a disk image file and write it to a floppy disk byte by byte. The format of the command’s usage is fairly straightforward:
Where you would replace INPUTFILE with the filename (and path) of the disk image and OUTPUTFILE needs to point to the destination (a floppy disk in our case). At least, it should be that simple, but it isn’t quite. Some extra parameters are needed when dealing with Mac Disk Copy images, because there is some extra information in the header of these files that we want to strip out. The command for creating a Mac boot disk is:
Complications of OS X
This seems simple enough, but you need to know a bit of Unix to get the paths correct. For example, if the image is system7.img and it’s in your home folder, you need to replace INPUTFILE with ~/system7.img. But how do you point OUTPUTFILE to the floppy disk? When Mac OS X mounts a floppy disk called DISKNAME, it creates a location for it at /Volumes/DISKNAME, but if you try to use this with the dd command, you will get an error.
If you have a floppy disk mounted, go to Terminal and type the command df -h. You’ll see your disk listed, but the field of interest is the first column – it will probably say something like /dev/disk1 – and that is the correct value for OUTPUTFILE.
But you’ll hit problems again. If you try to run this, you’ll be told that the device is busy. The trick is to unmount the contents of the floppy disk whilst you still have the disk itself mounted. Sounds confusing? It is – but this is the magic step which seems to be missed from many discussions about using dd.
![Mac Os X Mount Raw Disk Image Mac Os X Mount Raw Disk Image](https://www.icare-recovery.com/images/howto/format-erase-usb-drive-mac-confirm.png)
A Step by Step Guide
After that little tour of the dd command on OS X, here are the step by step instructions for creating a bootable floppy disk from OS X. As ever when using the command line, be careful what you type – it’s all too easy to make mistakes via a typo!
- First up, you need to locate a disk image. If it’s compressed within a .bin or a .hqx file, you’ll need to expand it first (just double click in the Finder). If it’s inside a .smi, you’ll need to mount that disk image first and then work with the actual .img file inside. If it’s in a .sea file, you’ll have to expand it using Stuffit, because Leopard will not open .sea files.
- Next, connect up your USB floppy drive and insert the high density floppy disk you are going to turn into a boot disk (none of the USB floppy drives support the Mac’s old 400K and 800K formats, only the 1.4 MB one). This process will erase anything that is already on the floppy, so be warned!
- Open Disk Utility (it’s in the Utilities folder, which is in the Applications folder). You’ll see the floppy drive on the left hand pane in Disk Utility. Click on the lower level (the piece whose name matches the icon mounted on the desktop) of the floppy and choose Unmount from the toolbar. Once this is done, the name of the volume will be greyed out.
- Select the top level of the floppy disk and click the Info button on the toolbar. Make a note of the ‘disk identifier’, which will be something like ‘disk1’. This determines what you will enter for OUTPUTFILE (if it says disk2, you’ll enter /dev/disk2).
- Quit Disk Utility and launch Terminal.
- At the command line, enter dd if=INPUTFILE of=OUTPUTFILE bs=84 skip=1 and hit Enter. If you are using a file called system7.img and it’s in a folder called Classic within your home folder, and your disk identifier from step 4 was ‘disk2’, then you’ll enter dd if=~/Classic/system7.img of=/dev/disk2 bs=84 skip=1
- Wait for the process to complete in Terminal, then eject the floppy disk and use it to start your old Mac.
The process is a bit fiddly, but you soon get used to it. What it means is that Mac users are no longer reliant on having two working classic Macs at home (so one can be used to help recover the other) – any OS X machine with a USB floppy drive should be up to the task. I’ve managed to Boot Macs into System 6 and 7 this way – and I’ve even made an A/UX boot disk . . . but that’s another article for another day.
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Summary
When a hard drive becomes raw, you cannot access pictures, videos, office files and music from macOS. EaseUS Data Recovery Wizard for Mac is the best software for Mac Raw recovery. This easy-to-use software only takes three steps to restore lost Raw data. Read on to learn the detailed steps.
PAGE CONTENT:
- Use Mac RAW recovery software to recover data from RAW drive
- How to fix RAW partition on Mac
- FAQs about Mac RAW hard drive data recovery
Symptoms of Raw Drive/Partition on Mac
A hard drive that displays files as RAW means the Mac cannot properly read it as they drive may have become corrupted. The RAW file system is a system error due to virus infection, power outages, format failure, or improper system shut down. Generally, when the hard drive is shown as RAW, possible symptoms are:
- The file system is displayed as 'RAW'
- File names contain 'weird' characters.
- When you access files, it will warn 'Sector not found'
- You will be reminded of 'Disk is not formatted. Do you want to format now?'
Usually, the effective way to fix the RAW partition is to erase and format the drive with a new file system by rebuilding DBR, FAT, MFT, etc., so that RAW partition can be accessed and used again.
But as we all know, hard drive formatting will lead to data loss. Therefore, you need to first recover your essential data from the RAW drive with a professional Mac RAW recovery tool. After that, continue fixing the RAW disk by formatting.
The Solution for Mac RAW Data Recovery
Before you do anything to the drive, if the data on the hard drive is important or irreplaceable, it's best to stop using it immediately and turn to specialized RAW recovery software to get back the files in advance.
A wide range of supported file systems and availability of different scanning modes make EaseUS Data Recovery Wizard for Mac the best Mac data recovery software. With it, you can recover data from Mac hard drive, external drive, memory card, as well as recover deleted files from trash.
Far cry 1 pc download softonic. The software is easy-to-use and safe. You can completely trust it as it has so many users around the world. With simple 3 steps, you can restore all lost files from hard drive on Mac 10.15, 10.14, 10.13, 10.12, or below. Read on to recover RAW data on Mac.
Step 1. Select the disk location (it can be an internal HDD/SSD or a removable storage device) where you lost data and files. Click the Scan button.
Step 2. EaseUS Data Recovery Wizard for Mac will immediately scan your selected disk volume and display the scanning results on the left pane.
Step 3. In the scan results, select the file(s) and click Recover Now button to have them back.
Also read: Mac partition recovery: how to recover deleted or lost partition on macOS/Mac OS X
How to Fix Mac RAW Partition by Formatting
Now that you've successfully recovered files from RAW disk with EaseUS Mac RAW recovery program, you can try to repair the corrupted RAW partition. To fix a RAW disk, you can format it to any supported files system on Mac, including APFS, HFS+, HFS X, FAT16, FAT32, exFAT, and NTFS.
In this section, we will show you two ways to format the RAW file system to NTFS/FAT32 with ease. The solutions are applicable to format a RAW drive on HDD, USB, SD card, or memory card.
1. Format RAW Partition with Disk Utility
Step 1. Go to 'Applications' > 'Utilities' > Double click and open 'Disk Utility'.
Step 2. Select your RAW drive or other USB flash drives on the sidebar, choose'Erase'.
Step 3. Rename the RAW partition, choose the format as MS-DOS (FAT) for Format, Master Boot Record for Scheme. Then click 'Erase'.
Wait for the process to complete, then you'll get an empty new hard drive with FAT32 as the file system. You can reuse the partition for saving data again.
2. Format RAW Drive on Mac with Terminal Command Line
Another more complicated way to fix and format a RAW partition is using the Terminal command line. If you are a novice to Mac computer, you'd better use the Disk Utility to complete the formatting with simple clicks.
Mac Os X Disk
Step 1. Hit cmd + space to run Spotlight, type: terminal, and hit Enter.
Step 2. Type:diskutil list and find out the corrupted RAW drive.
Step 3. Type: sudo diskutil eraseDisk FAT32 MBRFormat /dev/disk2.
- sudo gives you user right
- Diskutil calls disk utility program
- eraseDisk commands to format
- FAT32 sets the file system
- MBRFormat tells disk utility to format with a Master Boot Record
- /dev/disk2 is the location of an external hard drive
Step 4. Wait for the process to complete. After this, you can type: diskutil list in command again to check if the formatting has been successful.
Conclusion
If you want to recover corrupted RAW files from a digital camera, SD card, or hard drive on Mac, EaseUS Mac RAW recovery software is a great choice. It is a professional and easy-to-use RAW file recovery tool. Besides, the software is also qualified to fix corrupted photos and repair corrupted MOV/MP4 files on Mac. Django serialize dict object has no attribute meta.
Instead of data recovery after hard drive corruption, avoiding RAW drive again and being at risk of data loss in advance is more useful. You can pay attention to the following points in the daily use of a computer:
- Install and upgrade the antivirus software
- Safely eject the external USB drive
- Avoid misoperation, such as sudden power outage
- Use the advanced file system, like NTFS
- Back up important data regularly
FAQs About Mac Raw Hard Drive Data Recovery
Here are the frequently asked questions related to RAW recovery for Mac. If you also have any of these problems, you can find the methods here.
What is raw drive recovery?
Mac Raw recovery is a type of data recovery. When the hard drive is crashed, or the file system has been damaged, raw recovery can help users recover most of the lost files on a hard drive, SD card, USB flash drive, or other storage media devices.
How do I restore raw disk?
Use EaseUS Data Recovery Wizard for Mac to restore RAW disk within three steps:
Step 1. Select the RAW hard drive where you lost data and files. Click the Scan button.
Step 2. EaseUS Mac RAW recovery software will immediately scan your selected disk volume and display the scanning results on the left pane.
Step 3. In the scan results, select the file(s) and click Recover Now button to have them back.
Is Mac Data Recovery Free?
The free version of EaseUS Data Recovery Wizard for Mac lets you recover up to 2 GB of data free of charge. It enables you to recover deleted or lost photos, videos, Word, Excel, PPT, and other files from all Mac devices and external storage media, like external HDD/SSD, fusion drive, USB drive, SD card, CF card, Digital Camera, Video Player, and more.
What is the best data recovery software for Mac?
One of the best data recovery software for Mac is EaseUS Data Recovery Wizard. It can help you restore data in complex cases by supporting deleted file recovery, formatted recovery, RAW recovery, partition recovery, virus attack recovery, OS crash recovery, and other recovery scenarios.
Other best data recovery software for Mac you can try is:
Disk Image Mac Os
- Disk Drill
- PhotoRec
- TestDisk
- Exif Untrasher