You should be able to rename the.IMG file to.DD if you want an disk image called xxxx.dd.However, write blocked, both pieces of software did provide the same hash value.Could be that something was written to the disk between taking the images using the various methods.Using shadow copy is normally only required when taking an image of the live drive.
Using shadow copy means you can avoid hitting file locks from open files and it tracks all the writes to the disk to leave you with a non-corrupted copy of the disk even though the disk was being written to while the imaging was taking place. If you are taking an image of a secondary drive which as no activity on it, then shadow copy should not be required. ![]() Drives might be updated without you knowing it. You are welcome to join puredarwin on irc.freenode.net if you would like to join PureDarwin development and to add to this site. Img To Dmg Using Dd Program Mac OS XNote that this page might mention tools that are only available in Mac OS X, but not in PureDarwin. To mount these on a PureDarwin system, they need to be uncompressed first using the dmg2img utility. Img To Dmg Using Dd Program Download Compressed DMGHere is an example: URL DMGMacFUSE-2.0.3,2.dmg MOUNTPOINTVolumestest VNdevvn0 set v be verbose set e exit on errors wget -c URL download compressed DMG IMG(echo DMG sed -e s.dmg.imgg ) get name of IMG dmg2img DMG -o tmpIMG -v uncompress to IMG, vndevice attach devvn0 tmpIMG attach IMG to device mkdir MOUNTPOINT create mount point mount -t hfs VN MOUNTPOINT mount find MOUNTPOINT -iname Archive.pax.gz do something install (to be written). This is why we prefer the.dd suffix. To write a raw dump to a physical disk: CAUTION: the following commands are dangerous. ![]() IOHDIXController.kext used to be distributed with Darwin under the Apple Binary License. Since we want to use a compressed filesystem, it appears that the raw vndevice approach is not an option for PureDarwin. Only a subset of disk images can be mounted in this manner including readwrite disk images, UDIF disk images that use zlib compression, shad- owed disk images, and sparse disk images. However, it apparently calls usrlibexecloadhdi which, according to its man page, is used to load the disk image driver. Apparently, hdik is part of the closed-source project DiskImages-195. So it appears that it is not an option for PureDarwin either.
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