Re: How to reference xxxdvd1.iso in sources.list
On Thu, May 13, 2021 at 06:53:28PM +0200, tomas@tuxteam.de wrote:
> On Thu, May 13, 2021 at 03:47:34PM +0000, Andrew M.A. Cater wrote:
>
> Hi, Andrew
>
> thanks for chiming in
>
> > If you _really_ want to have one .iso to mount - this is where the 16G .iso
> > or the BluRay sized disks help - one image that holds a larger chunk of the
> > whole archive.
>
> Yes, one big .iso seems to be more comfortable than a whole bunch of
> smaller ones.
>
> > apt-cdrom will effectively read the index(es) off the .iso of what packages
> > there are and will cache that.
>
> I understand that: this is the "iso sister" of apt(-get) update.
>
> My question: it does operate on the (already mounted) .iso image, right?
> Or does it do the (loopback and) mounting on its own?
>
No, it relies on the image to be mounted. I last did this in anger with real
CDs / DVDs. A package install would prompt for the DVD to be phsyically
inserted into the disk drive [/mnt/cdrom probably at that stage - physical
drives automounted] and then read the list of packages off them.
If you were doing a large install e.g. Gnome / KDE, you might have to
physically change disks (sometimes more than once) so DVD1 -> DVD2 ->
DVD1 -> DVD3, for example.
If the DVD drive autolocked, then you might need to run an eject command in
there.
In practice, queuing up a few mount/umount/eject commands and then runnng
the apt-get install commands or whatever by using an up arrow command to
repeat wasn't a problem. DVDs loop mounted would be less of a problem, as
outlined.
> > If you have multiple DVDs, it will prompt you to
> > change them - so, actually, you could mount the DVD images in separate
> > directories under /media as individual mount points and then run apt-cdrom
> > to index them all with Tomas -d switch, as outlined above.
>
> Yes, that makes sense. Perhaps dedicate one directory to each install
> medium (/media/installers/buster/cd-23 or something).
>
> > For me - I find that a netinst - and internet bandwidth - is all that I need
> > but I recognise that that's not everyone's cup of $BEVERAGE.
>
> ISTR that Richard's Internet connectivity isn't... stellar. Sitting behind
> a >= 4Mbit spoils us, it seems :-)
>
> Cheers
> - t
All best, as ever,
Andy C.
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