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Top Forums UNIX for Beginners Questions & Answers Restore .dmg containing multiple partitions to bootable USB flash drive Post 303033348 by paulcristo on Wednesday 3rd of April 2019 07:52:51 PM
Old 04-03-2019
Quote:
Originally Posted by RudiC
Pls show e.g. your dd commands (to and fro).
Thank you for your reply. Apologies for taking so long to get back to you.

I don't remember exactly what my commands to create the image were. However, when I mount the image with my Mac it shows up as two different volumes which is how the original disk was formatted.

Here is the code I use to write the image to my uninitialized flash drive.
Code:
sudo dd if=/Volumes/Drobo/Installers/macOS\ installs/installmojave.dmg of=/dev/disk5

The result from dd:
Code:
11813828+1 records in
11813828+1 records out
6048680362 bytes transferred in 4055.983771 secs (1491298 bytes/sec)

Though running this dd command takes over an hour, the disk still ends up uninitialized. When I give it a formatted disk, it only writes the first volume in the disk image and not the second.

Any thoughts?
 

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raw2hdf(1)							     Emulators								raw2hdf(1)

NAME
raw2hdf - Create an .hdf hard disk image from a raw data file SYNOPSIS
raw2hdf rawfile hdffile DESCRIPTION
raw2hdf converts a binary dump of a hard disk's data into an IDE disk image in .hdf format for use with Sinclair ZX Spectrum emulators. OPTIONS
-v version specifies the version of .hdf image to be created. Valid values are `1.0' for a version 1.0 file and `1.1' for a version 1.1 file. Defaults to creating version 1.1 files. rawfile specifies a raw data file (or block device corresponding to an actual disk) to be converted. hdffile specifies the .hdf file to create. NOTES
Since raw2hdf has no knowledge of the geometry of the disk from which the original image was taken (indeed, the input file need not origi- nate from a real IDE disk at all), there is no guarantee that the information contained in the .hdf file header accurately represents the original disk. However, it will attempt to construct a header that is consistent with the size of the image, to produce an .hdf file which is functionally equivalent. BUGS
None known. SEE ALSO
fuse(1), fuse-utils(1), libspectrum(3) The .hdf format specification, at http://www.ramsoft.bbk.org/hdfform.html. The comp.sys.sinclair Spectrum FAQ, at http://www.worldofspectrum.org/faq/index.html. AUTHOR
Matthew Westcott (matthew@west.co.tt). Version 1.0.0 16th December, 2010 raw2hdf(1)
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