Am Freitag, 8. April 2016, 13:41:03 schrieb David M Brooke:
> Thanks kp.
>
> Now I understand what Andrew meant! -r refers to the number of directory
> entries permitted (like inodes, I guess). From the man page:
>
> -r root-dir-entries
> Select the number of entries available in the root directory.
> The default is 112 or 224 for floppies and 512 for hard disks.
>
> From memory I would have expected 512 to be sufficient, but maybe not…
>
> davidMbrooke
Hi David;
My findings are:
mkfs.(v)fat automatically chooses the best FAT size (12/16/32) for the size of
the partition.
A partition of 500MB is formatted as FAT16 with 512 root-dir-entries by
default.
A 1Gb partition is forammted as FAT32 with no root-dir-entries (by design)
We have long filenames on the iso image (>8.3). In FAT16 the root-dir-entries
may run out of space because of that (root-dir-entries are also used to store
long filenames) . That's why copying into / stopped at 80MB
It is no problem to copy all the 230MB from iso image to /tmp.
It is also no problem to copy the 230MB into the 1GB FAT32 formatted root,
because FAT32 has a different way to store long filenames.
So either choosing 1GB or enhancing root-dir -entries works...
mkfs.fat has an option to choose the fat_size when formatting a partition ("-F
32" for FAT32 of course).
This does not work on LEAF for whatever reason, so here is the bug :)
But why do I invest time as Linux user to explain other Linux users ancient
Windows filesystem limitations? I could have used Windows if I'm interested in
such problems. I use ext4 on my routers instead.
kp
http://stackoverflow.com/questions/11928982/what-is-the-difference-between-vfat-and-fat32-file-systems
has more information about FAT et al.
> > On 8 Apr 2016, at 13:27, kp kirchdoerfer <kap...@users.sourceforge.net>
> > wrote:>
> > Am Freitag, 8. April 2016, 14:17:42 schrieb Bob von Knobloch:
> >> On 08/04/16 13:27, David M Brooke wrote:
> >>> And I thought it was just me who had this problem with CF cards!:-)
> >>>
> >>> Out of interest, how big is the disk partition & what proportion of that
> >>> does 80MB represent?
> >>>
> >>> Last time I looked into this, I wondered if some aspect of Linux thinks
> >>> the disk is only 50% of the size it really is...
> >>>
> >>> davidMbrooke
> >>
> >> Hi David,
> >> It seems we are not alone.
> >>
> >> My CF has one partition of '256MByte'* when I copy the leaf.lrp files to
> >> it, it bombs always at the same file (approx 80MByte)*. So, approx 1/3.
> >> I also thought it was some nice figure like 1/2, but seems not to be.
> >>
> >> * I'll check exact figures tonight, I don't have the hardware here, at
> >> work.
> >>
> >> Cheers,
> >>
> >> Bob
> >
> > As Andrew said try to increase root fs when formatting
> >
> > mkfs.vfat -r 1024
> >
> > this helped me.
> >
> > kp
> >
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