Re: Upgrading a slink r1 CD to a slink r4 CD
On Fri, 17 Dec 1999, Jean-Baptiste Marchand wrote:
> I have the two i386 binaries CD's of Slink r1 and I would like to
> upgrade it to two i386 binaries CD's of Slink r4.
> I believe that with rsync, it is possible to upgrade ISO images, by
> downloading only the differences between the images but I'm not sure.
> Apart from the fact that the Slink r4 are not done yet, I would like
> to test this with Slink r3.
> My questions are:
> - How can I obtain an iso image of my Slink r1 Cd's ?
> I've done a dd like :
> $ dd if=/dev/hda of=slink1_image.iso
> but I'm not sure it is okay.
> Or should I copy the whole cd's and make the images with mkisofs ?
dd is okay, but is /dev/hda really your CDROM drive? ;-) And I would add
"bs=2k" to speed it up a bit. Make sure your CD isn't mounted when doing this.
> - Is it really possible to obtain a Slink release x (with x > 1) with
> iso images of Slink release 1, without downloading the whole new
> images ?
Yes, BUT... there are so much changes that rsync will probably download over
100 MB per image. This is of course much less than a complete CD, but maybe
more than you expected.
If you want some more info, it's a good idea to read the README of the
Pseudo-Image Kit, available from