file size limit exceeded, to backup NTFS. Alternative to limitations use of dd ??

frenchn00b · 11-05-2007, 01:18 PM

Hi,
I am just trying a simple thing:
to backup a NTFS partition of XP with 10-20GB size.

Code:

File size limit exceeded

It is of no way with dd. Is there an alternative that just simply works ?
Partimage is not workign for ntfs (just experimental), hence of no use for my case.

Thanks if somebody knows ...

Regards

==
btw

Quote:

Backing up a NTFS partition into a gzipped image file:

ntfsclone -s -o - /dev/hda1 | gzip -9 -c > winxp_hda1.img.gz

is as crappy too : file size limit exceeded

Partimage: http://www.partimage.org/Supported-Filesystems

macemoneta · 11-05-2007, 02:15 PM

This has nothing to do with dd, unless you are running a very (very) old version of dd. It sounds like you are trying to back up to a FAT formatted drive. FAT has a 4GB file size limit.

Lenard · 11-05-2007, 02:17 PM

Ghost for Linux???: http://freshmeat.net/projects/g4l/

This does overcome the 'file size limit exceeded' issue.

frenchn00b · 11-05-2007, 03:19 PM

Quote:

Originally Posted by macemoneta

This has nothing to do with dd, unless you are running a very (very) old version of dd. It sounds like you are trying to back up to a FAT formatted drive. FAT has a 4GB file size limit.

to backup the NTFS partition and with knoppix v1.1 (not that old)
thx

macemoneta · 11-05-2007, 03:30 PM

Quote:

Originally Posted by frenchn00b

to backup the NTFS partition and with knoppix v1.1 (not that old)
thx

And the filesystem you are backing up to?

David1357 · 11-05-2007, 03:30 PM

Quote:

Originally Posted by frenchn00b

Partimage is not workign for ntfs (just experimental), hence of no use for my case.

I have been using the "experimental" NTFS support in partimage for over 18 months without a single problem. I highly recommend it. One of its features is that it can automatically split files into 2GB parts for storage on brain-damaged file systems like FAT32.

Even though it is "brain-damaged", I generally use FAT32 to store my partitions because it does not have the journaling overhead of NTFS or EXT3 (so it is much faster for writing files), and you can mount it from both Windows and Linux.

frenchn00b · 11-06-2007, 01:07 AM

I found the problem.
NTFS 10GB hdd to backup:

"File limit exceeded"
ntfsclone hangs on 2048MB
dd hangs on 2048MB
since certainly gz is limited to 2048MB

The solution that works is :
dd with split and with gzip

I will write down the command afterwards. (to be cont)

frenchn00b · 12-02-2007, 08:52 AM

hence sthg like worked:

Code:

dd if=/dev/hda1 conv=sync,noerror | gzip -9 | split -b 1500m - backup-image.img.gz