在linux下制作光盘镜像
Creating an ISO Image
Here are a couple of different commands for creating an ISO image:
[root@server /root]# mkisofs -RJ -o image.iso /burndirectory/ [root@server /root]# mkisofs -J -o image.iso /burndirectory mkisofs -o image.iso -b images/boot.img -c boot.cat -R -J -T /my/file/tree |
The options (-RJ) will preserve long filenames, casing and Rock Ridge extensions (long mixed-case filenames and symbolic links for *nix).
-J Generate Joliet directory records in addition to
regular iso9660 file names. This is primarily use-
ful when the discs are to be used on Windows-NT or
Windows-95 machines. The Joliet filenames are
specified in Unicode and each path component can be
up to 64 Unicode characters long.
-R Generate SUSP and RR records using the Rock Ridge
protocol to further describe the files on the
iso9660 filesystem.
Copying a CD to a File on your Filesystem
Here are a couple of mentods for copying a CD to a file:
[root@server /root]# dd if=/dev/cdrom of=image.iso [root@server /root]# cat /dev/cdrom >image.iso |
More info can be found here: cdimage.html
Buring an ISO Image to CDR or CDRW
[root@server /root]# cdrecord -v dev=3,0,0 image.iso |
Blanking CDRW Media
Here are a few methods to blank CDRW media:
[root@server /root]# cdrecord blank=fast dev=3,0,0 [root@server /root]# cdrecord blank=all dev=3,0,0 [root@server /root]# cdrecord blank=all -force dev=3,0,0 |
Copying Directly from One CD to Another
[root@server /root]# cdrecord -v dev=3,0,0 -isosize /dev/cdrom |
Where the dev designation is the cd burner and /dev/cdrom is your regular cdrom drive.
Verifying an ISO Image or CDR/CDRW
[root@server /root]# md5sum
- or -
[root@server /root]# diff /dev/cdrom image.iso
- or -
[root@server /root]# mount /mnt/cdrom;
[root@server /root]# mount -t iso9660 iso.image /mnt/isotest -o loop;
[root@server /root]# diff -r /mnt/cdrom /mnt/isotest
- or -
[root@server /root]# md5sum /dev/cdrom >md5sum-cdrom.txt
[root@server /root]# md5sum image.iso >md5sum-file.txt
#Script to verify the md5sum results:
echo "Verifying MD5SUMS:"
MD5SUM1=md5sum-file.txt
MD5SUM2=md5sum-cdrom.txt
cat $MD5SUM1 | while read CODE NAME; do
if [ -n "`cat $MD5SUM2 | grep $CODE`" ]; then
echo "Success: $NAME"
else
echo "Failure: $NAME"
fi
done
|
Using an ISO Image without Burning it to CD Media
Mount it via the loop device:
[root@server /root]# mkdir /mnt/isotest [root@server /root]# mount -t iso9660 /dev/cdrom /mnt/isotest -o loop [root@server /root]# ls /mnt/isotest |
More Info:
loop.html
cdimage.html
Setting up your system to work with cdrecord
Before performing the entries mentioned for /etc/modules.conf, try just adding the following line to the global section of /etc/lilo.conf:
append="hda=ide-scsi"
Then run /sbin/lilo, reboot, then run cdrecord -scanbus to see if your CDRW is detected:
[root@server /root]# /sbin/lilo [root@server /root]# shutdown -r now ... [root@server /root]# cdrecord -scanbus |
If the above doesn't work, then you may need to complete the following steps:
Red Hat 7.1 (and probably 6.2 and 7.0) should already have a kernel that is ready to work with cdrecord. You probably need to add some or all of the following entries into /etc/modules.conf (or /etc/conf.modules):
options ide-cd ignore=hda # tell the ide-cd module to ignore hdb #alias scd0 sr_mod # load sr_mod upon access of scd0 alias scd0 ide-scsi # load sr_mod upon access of scd0 #pre-install ide-scsi modprobe imm # uncomment for some ZIP drives only pre-install sg modprobe ide-scsi # load ide-scsi before sg pre-install sr_mod modprobe ide-scsi # load ide-scsi before sr_mod pre-install ide-scsi modprobe ide-cd # load ide-cd before ide-scsi
Script for checking out your system: cdre_sh.txt
Finding your CDR or CDRW drive
[root@server /root]# cdrecord -scanbus |