On Sun, Apr 12, 2015 at 09:21:45AM -0600, Brook Milligan wrote: > I find that vnconfig is really useful for building disk images for embedded > or Xen systems. However, in some cases the image file must contain > information (e.g., boot sectors) in addition to the filesystem. It is, of > course, possible to extract portions with dd to a new file, expose that file > as a disk via vnconfig, and then reinsert the file back into the original > image with dd. However, it would make much more sense (I believe) to be able > to use vnconfig with options to specify the offset and size of the file > subset to treat as a disk image. For example, I'm thinking of something like > the following > > vnconfig -c -o 8192 -s 114688 vnd0 bootdisk.img > > as a means to create a virtual disk for the subset of the file bootdisk.img > that contains only 114688 sectors beginning at sector 8192. I feel that this > would greatly simplify the task of building disk images for a variety of > systems. > > Does this make sense? Would this be hard to do? Does anyone have the > knowledge (or bandwidth) to do this?
Doesn't this image also contains some kind of partition table ? I think it would make more sense to use the appropriate partition from the vnd (eventually adding support to the kernel or using a tool like mbrlabel) -- Manuel Bouyer <[email protected]> NetBSD: 26 ans d'experience feront toujours la difference --
