Re: [gentoo-user] Resizing a FAT partition?

Mick <michaelkintzios@×××××.com> [15-07-31 03:32]:
> On Thursday 30 Jul 2015 20:18:36 Todd Goodman wrote:
> > * Meino.Cramer@×××.de <Meino.Cramer@×××.de> [150730 14:32]:
> > > Hi,
> > >
> > > I have a SDcard of this layout:
> > > Number  Start   End     Size    Type     File system  Flags
> > >
> > >  1      4194kB  32.0GB  32.0GB  primary  fat32        lba
> > >
> > > There are about 11 GByte of data on it.
> > >
> > > The final result should be a SDcard with two partitions.
> > > First a FAT32 with about 20GByte and a second with 10GByte
> > > (ext4).
> > >
> > > I took a look at parted and the resize command, which sounds
> > >
> > > a little cryptic to me:
> > >           resizepart partition end
> > >
> > >                      Change the end position of partition.  Note that
> > >                      this does  not  modify  any filesystem present in
> > >                      the partition.
> > >
> > > One should use resize2f for that purpose.
> > >
> > > Firstly I want to shrink the first partition and secondly it is a
> > > plain FAT32 partition not ext-something. I did not find a
> > > "resizefat32" or similiar.
> > >
> > > What tools do I need?
> > > (beside the way to backup the SDcard, reinitialize it, put 2
> > > partitions on it and copy back the stuff.)
> > >
> > > How can I acchieve what I want?
> > >
> > > Thank you very much in advance for any help!
> > >
> > > Best regards,
> > > Meino
> >
> > Hi Meino,
> >
> > The "difficulty" with shrinking partitions is that you need to shrink
> > the filesystem in the partition first and then change the partition
> > information (which you can then do if you're careful with your favorite
> > partition tool.)
> >
> > There are definitely tools to do this and I'm surprised parted says it
> > doesn't touch the filesystem in the partition (but that might have been
> > a recent parted change?)
> >
> > Personally, since you're going to play around with the partitions and
> > resizing existing filesystems, you should really have a backup.
> >
> > If you're going to have a backup then the easiest thing to me is to
> > create new partitions and then filesystems and then restore from the
> > backup.
> >
> > However, if you really want to live dangerously, the last gparted boot
> > disc image I used could shrink FAT32 filesystems and partitions.  You
> > might want to see if it still can do so.
> >
> > Good luck!
> >
> > Todd
>
> Don't forget to defrag the filesystem first!  If you were making it larger
> then it wouldn't matter, but if you are shrinking it, then you want your files
> to be contiguous and not sprayed all over the partition.
>
> --
> Regards,
> Mick


Hi all,

thanks a lot for all your help ! :)))

I did a back up and tried gparted with success! YEAH!

Have a nice weekend!
Best regards,
Meino