Dump and restore for Windows partitions

2008-01-30 Thread Martin Boulianne
Hi,
Maybe this is a dumb question, but I was wondering if I could use
dump (and restore) on Windows NTFS partitions.

Say I have a NTFS partition, ad0s1. Could I use:
   # dump -b 4 -f /backups/winxp.dump /dev/ad0s1

Or after a restore, Windows would be able to read the files? What about dd,
with something like:
   # dd if=/dev/ad0s1 of=/backups/winxp.bck bs=4k


Thanks!! =)
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Re: Dump and restore for Windows partitions

2008-01-30 Thread Alex Zbyslaw

Martin Boulianne wrote:


Maybe this is a dumb question, but I was wondering if I could use
dump (and restore) on Windows NTFS partitions.

Say I have a NTFS partition, ad0s1. Could I use:
  # dump -b 4 -f /backups/winxp.dump /dev/ad0s1
 

No.  Dump is specific to ufs/ufs2 filesystems.  It specifically knows 
the format of the filesystem (superblocks, inodes, directories etc).  
You just get an error if you try:


(cartman)103% dump -0 -f /tmp/foo /windows
 DUMP: Date of this level 0 dump: Wed Jan 30 15:23:25 2008
 DUMP: Date of last level 0 dump: the epoch
 DUMP: Dumping /dev/ad4s1 (/windows) to /tmp/foo
 DUMP: Cannot find file system superblock
 DUMP: The ENTIRE dump is aborted.

I don't know if there are NTFS utils running on FreeBSD that could do 
similar - others may, or search the ports for NTFS related software and 
see what the pkg-descr files say.


--Alex

PS  A question is only dumb if you ask the same one repeatedly.  This 
question might demonstrate some ignorance, but we were all ignorant once 
and questions are one of the best cures!  IMHO, of course. (In the 
computer world, manuals are another cure but the page for dump was 
written when UFS was the *only* filesystem that worked on BSD, so fails 
to actually answer your question). 


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Re: Dump and restore for Windows partitions

2008-01-30 Thread Jerry McAllister
On Wed, Jan 30, 2008 at 09:18:53AM -0500, Martin Boulianne wrote:

 Hi,
 Maybe this is a dumb question, but I was wondering if I could use
 dump (and restore) on Windows NTFS partitions.
 
 Say I have a NTFS partition, ad0s1. Could I use:
# dump -b 4 -f /backups/winxp.dump /dev/ad0s1

Well, I htink it would work for a FATnn slice, but I don't
know about NTFS.

 Or after a restore, Windows would be able to read the files? What about dd,
 with something like:
# dd if=/dev/ad0s1 of=/backups/winxp.bck bs=4k

The problem is that dd copies essentially byte-by-byte and so it
might not restore in the fashion you wish.   Label blocks and file
links would all have to be identical - which they might not be in
a real life situation.  But, give it a try.
Copy it with dd and then restore it with dd back to a different
slice and see what happens.

jerry

 
 Thanks!! =)
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Re: Dump and restore for Windows partitions

2008-01-30 Thread Roland Smith
On Wed, Jan 30, 2008 at 09:18:53AM -0500, Martin Boulianne wrote:
 Hi,
 Maybe this is a dumb question, but I was wondering if I could use
 dump (and restore) on Windows NTFS partitions.
 
 Say I have a NTFS partition, ad0s1. Could I use:
# dump -b 4 -f /backups/winxp.dump /dev/ad0s1

Dump is only suited for FreeBSD's native UFS filesystem.
 
 Or after a restore, Windows would be able to read the files? What about dd,
 with something like:
# dd if=/dev/ad0s1 of=/backups/winxp.bck bs=4k

This should work, I think. But it will take up a lot of space, because
it will copy the every sector (even unused ones).

Unless there are special features of NTFS that you use, you could mount
the volume, and make a backup with zip(1) or tar(1). Note that with this method
you will probably lose any NTFS attributes. 

The port sysutils/ntfsprogs contains programs like ntfsclone and
ntfscp. Maybe those can be of use? 

Probably the best tool to completely backup an NTFS partition is a
windows-based tool.

Roland
-- 
R.F.Smith   http://www.xs4all.nl/~rsmith/
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Re: Dump and restore for Windows partitions

2008-01-30 Thread Martin Boulianne
On Jan 30, 2008 2:08 PM, Roland Smith [EMAIL PROTECTED] wrote:
 On Wed, Jan 30, 2008 at 09:18:53AM -0500, Martin Boulianne wrote:
  Hi,
  Maybe this is a dumb question, but I was wondering if I could use
  dump (and restore) on Windows NTFS partitions.
 
  Say I have a NTFS partition, ad0s1. Could I use:
 # dump -b 4 -f /backups/winxp.dump /dev/ad0s1

 Dump is only suited for FreeBSD's native UFS filesystem.

  Or after a restore, Windows would be able to read the files? What about dd,
  with something like:
 # dd if=/dev/ad0s1 of=/backups/winxp.bck bs=4k

 This should work, I think. But it will take up a lot of space, because
 it will copy the every sector (even unused ones).

 Unless there are special features of NTFS that you use, you could mount
 the volume, and make a backup with zip(1) or tar(1). Note that with this 
 method
 you will probably lose any NTFS attributes.

 The port sysutils/ntfsprogs contains programs like ntfsclone and
 ntfscp. Maybe those can be of use?

 Probably the best tool to completely backup an NTFS partition is a
 windows-based tool.

 Roland
 --
 R.F.Smith   http://www.xs4all.nl/~rsmith/
 [plain text _non-HTML_ PGP/GnuPG encrypted/signed email much appreciated]
 pgp: 1A2B 477F 9970 BA3C 2914  B7CE 1277 EFB0 C321 A725 (KeyID: C321A725)


Hi Roland,
Well, from its man pages, ntfsclone seems very promising!!
If it is restored to a different partition than the one it was backuped from,
Windows won't boot. But that's easy to fix...

Anyway it's for backup purpose, so I shall use it on the same partition.
Moreover, I use FreeBSD's boot manager, so I don't give a crap =P


Thanks! =)
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