kern
annotate mkdiskimg @ 83:4ef83db5f4cd
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| author | John Tsiombikas <nuclear@member.fsf.org> |
|---|---|
| date | Tue, 06 Dec 2011 15:53:57 +0200 |
| parents | |
| children | 4dd35ccceba1 |
| rev | line source |
|---|---|
| nuclear@83 | 1 #!/bin/sh |
| nuclear@83 | 2 |
| nuclear@83 | 3 # mkdiskimg - prepare a disk image for the kernel |
| nuclear@83 | 4 # usage: mkdiskimg [size in mb, default: 40] |
| nuclear@83 | 5 |
| nuclear@83 | 6 imgfile=disk.img |
| nuclear@83 | 7 if [ -e $imgfile ]; then |
| nuclear@83 | 8 echo "file '$imgfile' exists, will not overwrite, delete it first" >&2 |
| nuclear@83 | 9 exit 1 |
| nuclear@83 | 10 fi |
| nuclear@83 | 11 |
| nuclear@83 | 12 if [ -n "$1" ]; then |
| nuclear@83 | 13 sizemb=$1 |
| nuclear@83 | 14 else |
| nuclear@83 | 15 sizemb=40 |
| nuclear@83 | 16 fi |
| nuclear@83 | 17 |
| nuclear@83 | 18 # create the image file |
| nuclear@83 | 19 echo 'creating image file ...' |
| nuclear@83 | 20 dd if=/dev/zero of=$imgfile bs=1M count=$sizemb || exit 1 |
| nuclear@83 | 21 |
| nuclear@83 | 22 # create partition table |
| nuclear@83 | 23 if ! sfdisk --version | grep linux; then |
| nuclear@83 | 24 echo "failed to find the linux sfdisk program." |
| nuclear@83 | 25 echo "please install it, or create a partition on the disk image ($imgfile) manually." |
| nuclear@83 | 26 exit 0 |
| nuclear@83 | 27 fi |
| nuclear@83 | 28 |
| nuclear@83 | 29 echo 'creating partition table with a single partition ...' |
| nuclear@83 | 30 sfdisk -q $imgfile <<EOF |
| nuclear@83 | 31 ,,cc |
| nuclear@83 | 32 EOF |
| nuclear@83 | 33 if [ $? != 0 ]; then |
| nuclear@83 | 34 echo 'failed to create partition' >&2 |
| nuclear@83 | 35 exit 1 |
| nuclear@83 | 36 fi |
| nuclear@83 | 37 |
| nuclear@83 | 38 echo |
| nuclear@83 | 39 echo 'done. happy hacking!' |