Yep this is all good stuff. ftp://ftp.armedslack.org/armedslack/armedslack-devtools/sheevaplug/qemu-to-sheeva.txt
I haven't digested everything you've put down but the above URL is how I bootstrapped armedslack onto the sheevaplug -- converting a qemu installation back to a bootable hard disk. On Fri, 6 May 2011, Davide wrote: > It's often handy to know the physical offset of the first partition of a qemu > raw disk image. > If you do not use raw images you can convert it to raw ... do what you need > and convert it back. > I've not yet found a reliable way of mounting non raw images from ordinary > linux OS. > You can use this trick to populate a qemu disk image with an armedslack > miniroot sistem image directky from your linux x86 box. > > Unfortunatelly the offset depends on the geometry of the disk image. > Here's how I guess the correct offset: > > the firs block of the firs partition is located in: > the first sector of the second track > it will be located in <sectors per track> * 512 > > example: > fdisk -l qemu_hdu.raw > Disk qemu_hdu.raw: 0 MB, 0 bytes > 5 heads, 54 sectors/track, 0 cylinders > Units = cylinders of 270 * 512 = 138240 bytes > Sector size (logical/physical): 512 bytes / 512 bytes > I/O size (minimum/optimal): 512 bytes / 512 bytes > Disk identifier: 0x00000000 > > Device Boot Start End Blocks Id System > qemu_hdu.raw1 1 1016 137133 83 Linux > > the firs partition of this image (qemu_hdu.raw1) will begin: > (54 * 512) = 27648 > > > > Ho do you go about creating the filesystem from the x86 linux box: > > What folows creates an ext2 filesystem on the first partition of the > qemu raw disk image and subsequently mount is so that you can polulate it. > > # losetup -o <previously calculated offset> /dev/loop0 qemu_hdu.raw > # mke2fs -b 4096 -i 16384 -m 1 -L surap_root /dev/loop0 > # mount /dev/loop0 /mnt/tmp/ > > Hope this helps > David > > > _______________________________________________ > ARMedslack mailing list > ARMedslack@lists.armedslack.org > http://lists.armedslack.org/mailman/listinfo/armedslack > -- Stuart Winter Slackware ARM: www.armedslack.org _______________________________________________ ARMedslack mailing list ARMedslack@lists.armedslack.org http://lists.armedslack.org/mailman/listinfo/armedslack
