Baslinux mailing list

[sindi keesan <keesan AT sdf.lonestar.org>]

> > I have not yet learned to resize a loop.
>
> There are two ways, either:
>
> dd if=/dev/zero of=newfs.img bs=1024k count=100 # replace count with desired
>                                                # size in MB
>
> mke2fs newfs.img                                # say yes to the prompt
> mount -o loop newfs.img /hd
> mount -o loop fs.img /fd
> cp -a /fd/* /hd
> umount /hd
> umount /fd


Or mount to /mnt instead of /fd?


> or, if you have the resize2fs program:
>
> dd if=/dev/zero bs=1024k count=100 >>fs.img # replace count with the
>                                            # desired size MINUS the
>                                            # current size. for
>                                            # instance, if you want
>                                            # a 50MB image, and it's
>                                            # 20MB now, use 30
>
> resize2fs fs.img  # resize2fs may simply say "run e2fsck -f fs.img
>                  # first". If that's the case, do what it says,
>                  # then run it again.
>
> > How do I copy files to fs.img, with dd?
> >
> > dd if=/dev/hdb1 of=fs.img  (all from ramdisk linux)?
>
> OK.
>
> > Then to copy fs.img to zip drive:
> > mount /dev/sda4 /zip
> > cp fs.img /zip  ?
>
> mount, then mkdir /zip/baslin then cp fs.img /zip/baslin.
>
> > Is your boot disk designed to work only with fs.img?

> > always modify the fs.img while it is running if you want to make
> > changes.
>
> That's your choice. Using fs.img makes it much easier to add files
> which can be read by DOS.

How would I read a file in DOS from fs.img?

> > Could I try out your boot disk with a scsi zip drive?  I think the
> > only difference is the two parport modules (which won't hurt
> > anything) and ppa.
>
> On the contrary, SCSI is more complicated, because you need low-level
> drivers for your specific adapter. You'll probably also need to manually
> set up the module. Much more complicated.

Forgot about this.  There is not much point in doing this with a scsi zip 
disk since it is not very portable (needs a scsi card).

> > I am going to first have to learn to make an ext2 filesystem on the
> > zip disk with iw from iomega.
>
> Note that you don't need an ext2 filesystem on the zip disk to use
> the bootdisk I made. It can be an msdos filesystem instead, as long
> as /baslin/fs.img is on there.

Good, we can make the file and the boot disk now and be all ready to try 
it on the parport drive when it comes.

Can I make a newfs.img and copy a larger fs.img to it and retain all the 
files but have less free space?  Or can one only copy a smaller fs.img to 
a larger newfs.img?  My HD BL3 partition is 200MB with about 30MB of 
files, and I want 50MB of linux on the zip disk.

> > Can I partition a disk to be half
> > linux and half DOS?  I only have one disk here and want to be able
> > to use it in DOS.
>
> You can use the loopback file as described above. I'm not sure how you
> partition a zip disk.
No need if fs.img can be on a DOS partition.

> David
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keesan AT sdf.lonestar.org
SDF Public Access UNIX System - http://sdf.lonestar.org