Restore Dmg To 2nd Partition Error Resource Busy

Restore DMG to SD Card - MAC OS X. More by the author: After making a backup of a SD Card, and trying to restore it using 'Disk Utility' you may have some issues during the process like: To solve this, there is this 3 step process that you can perform in the terminal.

  • Mac File Recovery. Tutorials show how to recover deleted, formatted and corrupted files from Mac computer, lost Mac volume, storage media such as memory card, camera, USB drive etc with EaseUS Mac data recovery software.
  • Restoring an image to the C: Partition using Acronis V9.0 (Build 3854) Bootable CD 8. Confirm the partition size is correct for your system. When asked to restore another partition or hard drive from the backup archive, select No, I do not.

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Restore a full-disk .dmg file to a raw block device 6 comments Create New Account
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Restore a full-disk .dmg file to a raw block device
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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

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

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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'.

You can open dmg file, convert it to iso file, or burn it to a CD / DVD disc. To convert it to iso file, please follow the steps, Run PowerISO. Choose 'Tools Convert' Menu. PowerISO shows Image Converter dialog. Choose the source DMG file you want to convert. Set the output file format to iso file. Enter the output file path name. The DMG image format is by far the most popular file container format used to distribute software on Mac OS X. Here’s how to convert a DMG file into an ISO file that can be mounted on a Windows PC. How to convert a dmg file to an iso. The DMG file can be burned to a CD or mount as a normal volume on Macintosh computers. Usually, the data in DMG file is stored in compressed format. On a Windows PC, AnyBurn can convert DMG file to ISO format, or burn it to a blank CD / DVD disc. To convert DMG file to ISO format, please follow the steps, 1.

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

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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 !

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