Any Way To Combine .dmg Files

  1. Any Way To Combine .dmg Files Without
  2. Any Way To Combine .dmg Files
  3. Any Way To Combine .dmg Files Together
  4. Any Way To Combine .dmg Files Online

If you haven’t already, open and mount the Merge disk image (.dmg file) that you have downloaded. You will need to accept the Merge licence agreement to do this. Drag the Araxis Merge application from the disk image into your system’s Applications folder. Integrating Merge with Finder (optional). How to Combine Excel Sheets in a Folder Full of Files. A few times, I've had a folder full of files that I needed to put together into a single, consolidated file. When you've got dozens or even hundreds of files, opening them one-by-one to combine them just isn't feasible. Learning this technique can save you dozens of hours on a single project.


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Restore a full-disk .dmg file to a raw block device | 6 comments | Create New Account
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Any Way To Combine .dmg Files Without

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Restore a full-disk .dmg file to a raw block device

Wow, great hint. This is going to go to good use. Thanks!

Restore a full-disk .dmg file to a raw block device

Somehow I thought that was what the menu item Images -> Scan Image for Restore always did... but I suppose there has been at least one occasion where this may have actually been what I needed.
g=

Happily, I've never found myself in a position where I needed to restore my backup image files, (made with Carbon Copy Cloner.) But I'd like to know the routine if I ever need to use it.
My question: since I back up separate partitions into separate disk image files, is this hint inapplicable to me? Does this hint only apply to backing up multiple partitions into a single disk image?
(I had no idea it was even possible to backup multiple partitions to a single disk image...)

Restore a full-disk .dmg file to a raw block device

This is great. I was getting real frustrated with Disk Utility's non-specific error messages. This worked just like you said it would.

Restore a full-disk .dmg file to a raw block device

Great post. However, when I tried this I got a 'Resource busy' error.
In order to avoid this problem, you have to make sure the mac OS isn't 'using' the device first. To do this just open the DiskUtility.app, and on the target USB hard drive, unmount any of it's partitions. Make sure to not eject the USB hard drive so that the device is still available in DiskUtility and shows up in the result from 'diskutil list'.

Any Way To Combine .dmg Files

Restore a full-disk .dmg file to a raw block device

Many thanks to you and daveosborne for your hints !
1) I'm currently dumping the content of a .dmg file to an external disk.
2) 'with an appropriate buffer size to copy over the whole block image, including partition table and boot sector'
-> what do you mean by that and how can I determine which buffer size is appropriate ?
-> how did you determine the 131072 size ?
For my use I trusted blindly the example and used the bs=131072 option. Untill now it seems to be working... (it's still copying).
I'm currenlty getting tons of lines on my terminal screen that look like :
...
CZlibDecompressor::decompressData: src 0x02E4AA97 srcLen 116073
CZlibDecompressor::decompressData: dest 0x02E26000 destLen 262144
CZlibDecompressor::decompressData: src 0x02E61F0D srcLen 20723
CZlibDecompressor::decompressData: dest 0x02E26000 destLen 262144
...
with sometimes long series of
...
CZlibDecompressor::decompressData: src 0x02E66B71 srcLen 1167
CZlibDecompressor::decompressData: dest 0x02E26000 destLen 262144
CZlibDecompressor::decompressData: src 0x02E66B71 srcLen 1167
CZlibDecompressor::decompressData: dest 0x02E26000 destLen 262144
...
I notice the destLen (I suppose it means block destination length) 262144 is exactly the double of the bs=131072 that was used before. I'm curious if anyone can help me understand this. Does this mean the source data is sparsed over the destination disk by blocks of 131072 or 262144 bytes, thereby fragmenting the disk ?
In your replies, please kindly take into account that I'm a French newbie with a fair level of ignorance of OSX command line technical slang, however not completely ignorant with computers either (one piece of paper even says I'm an engineer :), it's just that I don't understand what the buffer size technically means here.
Many thanks in advance for your insights !

Any Way To Combine .dmg Files Together

I think what you're saying is that you have a _segmented disk image_ correct? And not simply several separate disk images whose contents you want to combine.
Typically you don't have to re-combine the segments. Just put all the segments into one location and double-click the first segment. That should cause the disk image to mount just as if it was a single dmg file.
Normally the segments are named such that the first segment has a .dmg extension and the rest of the segments have names ending in .002.dmgpart, .003.dmgpart, etc. If yours don't have names like that then I suppose it may cause a problem mounting the image.
But if you want to recombine the segments back into a single dmg file I think you still need to get it mounted (as stated above) and then use Disk Utility to create a new disk image file from the mounted volume. I didn't find anything in the man pages indicating there was a way to directly recombine the segments.
Steve

Any Way To Combine .dmg Files Online

Aug 25, 2007 10:53 AM