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Full Discussion: Mirroring Disk Geometry
Top Forums UNIX for Advanced & Expert Users Mirroring Disk Geometry Post 302154892 by blowtorch on Wednesday 2nd of January 2008 10:11:59 AM
Old 01-02-2008
You can use the fmthard command to mirror disk layouts. Something like this:

Code:
prtvtoc /dev/rdsk/cXtXdXs2 | fmthard -s - /dev/rdsk/cYtYdYs2

And a snapshot is not like a mirror, a mirror is maintained at all times. Any changes in the data are reflected on all disks in the mirror. A snapshot is used to get a point-in-time image of a disk. It will fall out of sync after any updates occur on the actual data.
 

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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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