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Tor Olav Kristensen wrote:
> Warp wrote:
>> Tor Olav Kristensen <tor### [at] toberemovedgmail com> wrote:
>>> Orchid XP v8 wrote:
>>>> Tor Olav Kristensen wrote:
>>> ...
>>>>> dd if=/dev/sda of=/mnt/sdb1/WinNT_backup.img
>>> ...
>>>> ...or I could use Norton Ghost (which we have a commercial license
>>>> for).
>>
>>> Hmmm... Why do companies want to use money on such programs ?
>>
>> If the program breaks, they have someone to call to. No such luck with
>> free software.
>
> So you are saying that their chances of having the problem fixed in time
> is better if they have paid money for the program ?
Sure. If Norton Ghost dies they can spend hours on the phone or in
email exchanges to both act all bossy customer and demand a new copy or
a fix, rather than spending a few minutes getting Knoppix to boot and
then typing those 4 lines.
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nemesis wrote:
> You said you had a wonderful time, but that was just sarcasm... :P
"What, do I need to hold up a sign saying 'sarcasm' every time?"
"You have a sign like that?"
--
Darren New, San Diego CA, USA (PST)
There's no CD like OCD, there's no CD I knoooow!
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Tor Olav Kristensen wrote:
> When you are finished, it would be wise to boot from a Knoppix CD
> and connect an external USB HD (sdb) and do this in order to
> backup your whole Win NT disk:
Or you could use the free DriveXML that walks you thru the process, saving
only the space occupied by files, compressing and/or splitting the result,
and restores just as easily. :-)
--
Darren New, San Diego CA, USA (PST)
There's no CD like OCD, there's no CD I knoooow!
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Tor Olav Kristensen wrote:
> Orchid XP v8 wrote:
>> Tor Olav Kristensen wrote:
> ...
>>> dd if=/dev/sda of=/mnt/sdb1/WinNT_backup.img
> ...
>> ...or I could use Norton Ghost (which we have a commercial license for).
>
> Hmmm... Why do companies want to use money on such programs ?
Because they work better.
> But what if the HD breaks ?
What if the HD breaks, and you can only now buy a larger one than you had
when you made the image backup? You're SOL.
--
Darren New, San Diego CA, USA (PST)
There's no CD like OCD, there's no CD I knoooow!
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Darren New wrote:
> nemesis wrote:
>> You said you had a wonderful time, but that was just sarcasm... :P
>
> "What, do I need to hold up a sign saying 'sarcasm' every time?"
> "You have a sign like that?"
I understood it was sarcasm, but couldn't let the joke go... :P
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Darren New <dne### [at] sanrrcom> wrote:
> What if the HD breaks, and you can only now buy a larger one than you had
> when you made the image backup? You're SOL.
At least on the unix side "cp -ax" is useful to create an exact mirror
of the *contents* (ie. at the file level, rather than the raw sector level)
of a disk, to be restored later, or transferred to another disk (even if
that another disk has a different size).
Of course being just a copy of the files means that it won't restore
any partition info, etc. but at least you don't have to worry about the
disk changing size.
I don't know how well this could be used to back up an NTFS partition,
though.
--
- Warp
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nemesis wrote:
> Darren New wrote:
>> nemesis wrote:
>>> You said you had a wonderful time, but that was just sarcasm... :P
>>
>> "What, do I need to hold up a sign saying 'sarcasm' every time?"
>> "You have a sign like that?"
>
> I understood it was sarcasm, but couldn't let the joke go... :P
/me holds up sign reading "Sarcasm".
--
Darren New, San Diego CA, USA (PST)
There's no CD like OCD, there's no CD I knoooow!
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Warp wrote:
> I don't know how well this could be used to back up an NTFS partition,
> though.
One advantage Linux would have here is that Windows wouldn't be running and
accessing the disk and such. Also, Windows goes out of its way to keep you
from doing things like reading and writing the security files, for obvious
reasons. You can get around it under Windows, but it's not as trivial as
copying things in Linux is - you kind of have to say "make a snapshot so I
can copy it for backup purposes".
On the other hand, if you make a backup without understanding it, you have
to restore it to the same place. As a trivial example, restoring the
free-space bitmap file is going to cause troubles if you don't. Obviously
you'd have to know what files you're copying and skip the ones that should
be skipped. (Unlike traditional Unix file systems, all the NTFS data on a
disk is actually in files, including the MFT (aka i-nodes), the free space
bitmaps, etc.) I seem to have 80 unmovable files on my system drive (which
seems very high to me) and 20 on my media drive (that's just data). It looks
like about half of those are related to shadow copies, and a lot of the
system tables don't get to move, but otherwise it still seems like a high
number. </ramble>
I'm pretty sure the Linux tools for NTFS don't make precise file-level
copies, to the point where you could restore things to a blank disk and
expect to be able to boot it and have it run. They don't do encryption, they
don't handle alternate data streams (as far as I know), they don't handle
the system-level streams (like security, escrow keys, reparse points (aka
sym links), etc), and so on. Not bad for backing up your data, but I
wouldn't want to try to restore *just* the data and (for example) none of
the security descriptors.
--
Darren New, San Diego CA, USA (PST)
There's no CD like OCD, there's no CD I knoooow!
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Darren New wrote:
> Tor Olav Kristensen wrote:
>> When you are finished, it would be wise to boot from a Knoppix CD
>> and connect an external USB HD (sdb) and do this in order to
>> backup your whole Win NT disk:
>
> Or you could use the free DriveXML that walks you thru the process, saving
> only the space occupied by files, compressing and/or splitting the result,
> and restores just as easily. :-)
Does it dump your disk metadata into XML? Ie. do you need a disk 10x bigger
to save the backup? :P
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Nicolas Alvarez wrote:
> Does it dump your disk metadata into XML?
Yes, but only the metadata. The actual sectors are saved as binary, but the
directory structures letting you restore individual files (for example) are
in XML, so as to make it easier to recover your files in the event you don't
have the tool available. Hence the name.
> Ie. do you need a disk 10x bigger
> to save the backup? :P
No. My 22G backup winds up with 26M of metadata in XML. And the tags for
individual files are all one character, so the author was a bit cognizant of
the problem.
--
Darren New, San Diego CA, USA (PST)
There's no CD like OCD, there's no CD I knoooow!
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