Re: Is there any disk image software that recovers from bad media?
From: Willard (guess_at_msn.com)
Date: 04/16/04
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Date: Fri, 16 Apr 2004 16:52:58 -0400
*Vanguard* wrote:
> "wojo" said in news:sXQfc.45716$F9.6048@nwrddc01.gnilink.net:
>
>>Ahead Nero comes with a program called BackItUp. This program does
>>recover from a bad disk error as your describing. It warns you of the
>>bad disk and then prompts you to replace it with a new disk then
>>continues on your merry way. You can download the free trial version
>>of Nero6 Ultra here: http://www.nero.com/us/nero6-ultraedition.php
>>Every aspect of the trial works for I believe it's 60 days and then
>>you would have to purchase it but purchasing it is very highly
>>recommended. As far as I am concerned it's the best burning package
>>I've seen out there.
>
>
> I'm currently at Nero 5.5.10.54, the last version before customers get
> forced to pay for the upgrade to version 6.
>
> The problem with backup software is that it is a logical backup, not a
> physical backup. Files are read and copied onto the target media. You
> can run into problem on a restore of EFS-protected files. You can run
> into a problem that the logical restore of reading files and trying to
> replace them onto the hard drive won't give you the same exact image
> because files were inuse and they are not placed exactly as they were
> before. The Veritas Backup Exec Desktop program also lets me select the
> CD-RW drive so I could use it to span a backup file across multiple
> CD-Rs but that's not the type of backup that I'm looking for.
>
> With DriveImage, the first CD was bootable. I didn't need the bootable
> floppies. I could just boot right from the disk image CD and start the
> recovery (not a logical data restore but a physical drive recovery).
> With a logical data backup, you have to use a bootable floppy. Also, in
> some full recovery modes for backup programs, this bootable floppy
> merely lets you install Windows which then automatically starts the
> backup program to perform a logical restore (boot by floppy, installs
> Windows, auto-runs the backup program, does a logical restore). That's
> how the Veritas "Disaster Recovery Set" works. You need up to 6
> floppies (equivalent to the Windows 2000 startup floppy set), the
> Windows installation CD, and you create a full backup (on tape or CD).
> This takes a hell of a lot of time not only in creating this recovery
> set - which is STILL a *logical* backup - but also in using it because
> of the time to boot from the multiple-diskette set and installing
> Windows before it even gets to run its minimal version of its backup
> program. I did that once. I never used it again. It also was not a
> *physical* disk image backup. I think a later version of the Veritas
> Backup Exec Desktop (and probably the one that I have) lets you
> eliminate the bootable floppy set by letting you make the first CD-R
> bootable. Still doesn't eliminate it being a logical backup.
>
> I need a *physical* disk imaging product that reads the hard drive
> sector by sector and restores that *exact* physical image on the hard
> drive. I don't want it reading anything from a file system (which means
> you have to boot that OS to provide the file system in the first place).
> Ghost had the problem that it defaulted to a logical disk image because
> it read the files instead of the sectors. You can use the /IA switch
> but, when I trialed it, it would include the unused sectors in the disk
> image to the image file was huge. DriveImage would do a
> sector-by-sector read of the hard drive regardless of what OS was on
> that partition, do compression to minimize the media count, and skip the
> unused sectors to further reduce the image file size. Unfortunately it
> has absolutely no graceful recovery from media failures. I don't recall
> Ghost having graceful recovery, either.
>
> I did take a look at Nero's ViewIt tutorial on how to use BackItUp. It
> mentions when selecting a target of where to place the data that you can
> select "Nero Image Recorder". Does this force a reboot of the computer
> to then run a DOS-mode-like version of its program? Obviously you
> cannot create an exact image of the hard drive with a live OS currently
> running and making changes to the disk when you are running the disk
> image. There was nothing described of "image recorder" in the manual.
>
I use Power Quest Drive Image 7.0 "Copy Drive" to clone (C:\) drive 1 to
external USB2.0 backup drive 3, which is a duplicate of drive 1...
I use "Ghost /IA /IB /2 /1" on a DOS A: boot floppy to copy the cloned
backup drive 3 to C:\, sector by sector including the MBR...
(Used with Windows2000pro on my Notebook and Desktop external drives)
Willard
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