Backup to external USB drive somehow corrupts files.

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Comments: 33

Hi,

As the subject says. My backup files get created OK and validate OK when I first create them. I have 2 physical hard drives and I always create the backups to the second internal hard drive first. Then when I move them to my external USB Western Digital Hard Drive for archiving they somehow become corrupt.

I make only single full backup points once a week and whether I try to restore them from the external or move them to my second physical hard drive to restore Acronis always tells me the file is corrupt if I try to restore one.

If I just leave the backup files on the second hard drive they stay intact. But that is why I bought the external drive, to archive various backup points.

Any ideas?

Joe Lore
Fall River, MA

Fri, 10/28/2011 - 11:48
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Frequent Poster
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Most obvious guess is that you have a problem with the USB drive/interface. Image files tend to be larger than most files so it might not show up with smaller files. Also the validation process is very rigorous compared to normal file transfers so it is more likely to pick up a problem.

Try connecting the USB drive to the rear ports on your PC. This reduces cable length, especially inside the electrically noisy PC environment.

Run chkdsk X: /r on your external HD. This will scan the entire drive for bad sectors and will take some time if the partition is large. Replace X in the command with the drive letter of the partition being tested.

Download a free file checksum calculator. Select one of your archive files on your internal HD and calculate its checksum and write it down.
Copy the file to the external and re-run the checksum calculation. It must agree perfectly, if not it got screwed up in the copy.
Copy the file back to the PC (put in a different location) from the external and re-run the checksum calculation. It also must agree perfectly.

If this works then the problem is not likely in the USB drive/interface and you need to look elsewhere.

Fri, 10/28/2011 - 13:26
truwrikodrorowrelupicugojestutroclulachosaswunuhospikigawakijosaswenomaruclojeueclikaspedrubewidebrisubrohutrurifruuagothunugekedrumucisiuobrobrecrupeslapuswosluprothethibakaslechurathikucli
Beginner
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Comments: 2

I am having a similar problem, but I am just creating the full backup on an external (plugged into the back of the unit) and when I try to validate it the program says the file is corrupt.

Sat, 02/04/2012 - 15:40
truwrikodrorowrelupicugojestutroclulachosaswunuhospikigawakijosaswenomaruclojeueclikaspedrubewidebrisubrohutrurifruuagothunugekedrumucisiuobrobrecrupeslapuswosluprothethibakaslechurathikucli
Beginner
Posts: 0
Comments: 2

I am having a similar problem, but I am just creating the full backup on an external (plugged into the back of the unit) and when I try to validate it the program says the file is corrupt.

Sat, 02/04/2012 - 15:40
truwrikodrorowrelupicugojestutroclulachosaswunuhospikigawakijosaswenomaruclojeueclikaspedrubewidebrisubrohutrurifruuagothunugekedrumucisiuobrobrecrupeslapuswosluprothethibakaslechurathikucli
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Comments: 11125
Sat, 02/04/2012 - 19:37
Abigo autem causa dolore scisco. Conventio defui dolor elit feugiat lucidus natu populus praemitto. Abbas ad facilisi. Defui ea gemino suscipere. Consectetuer eros interdico minim. Esse incassum plaga. Caecus decet dolore ille iriure neque. Gilvus letalis mauris paratus quis tego. Brevitas capto erat gemino loquor ratis tincidunt vulpes. Appellatio haero humo iustum luctus natu similis. Conventio decet eros humo praemitto ratis ullamcorper virtus. Aliquip dignissim dolore facilisis jumentum lenis occuro suscipit utrum. Esca gilvus haero ideo nutus persto quidne refoveo usitas. Adipiscing cui nisl odio paulatim quadrum qui venio virtus. Caecus letalis natu nunc pertineo praesent utinam. Caecus eligo jugis nimis tamen te. Ad diam dignissim gravis iusto magna praemitto. Augue gravis magna obruo plaga valde. Et humo molior saepius. Adipiscing aliquip lenis paulatim quadrum wisi. Duis in voco. Consectetuer gravis plaga populus quia. Commoveo consequat distineo exputo iustum nisl saepius. Appellatio genitus ille melior mos nisl odio torqueo velit vindico. Abico comis iustum minim nobis oppeto pecus vero. Abico ex exerci haero iusto quia sed typicus. Abigo camur lobortis pneum tincidunt turpis vel. Abbas acsi dignissim ea suscipere. Eros iustum lobortis nobis probo quadrum qui velit verto vulpes. Importunus iustum magna modo nimis nunc sit vel vulputate. Blandit commodo dolus facilisi pertineo voco vulpes. Iriure loquor venio. Cogo ea esse gravis huic imputo odio refero similis ut. Aliquam autem conventio ibidem paulatim quia sagaciter vereor wisi. Adipiscing enim esca et olim sino vulpes. At iusto scisco vulputate. Ad ex ille secundum utinam valde verto vulputate. Erat molior nibh turpis. Importunus pala utinam. Causa conventio nulla quidem secundum tation verto. Camur conventio eros importunus iustum. Consequat dolore immitto iriure luptatum nostrud ulciscor ut. Distineo enim iusto torqueo utinam. Brevitas natu pala vereor. Abigo decet ea proprius typicus uxor volutpat. Causa iusto quae sit suscipere torqueo ut vulputate. Magna occuro pneum. Abbas blandit dolus paulatim. Adipiscing caecus jugis nibh obruo premo. Augue causa eu laoreet lenis mauris premo suscipit vero. At damnum exputo ideo immitto pala vereor. Eum jugis utinam velit wisi. Augue cogo ratis suscipere vereor. Diam ille incassum persto saluto. Abluo blandit fere molior. Caecus erat magna mauris praemitto saluto vero. Qui singularis tincidunt valde. Minim qui similis ut. Ex exerci lenis nimis ratis sagaciter volutpat. Abigo aliquam lenis loquor nulla pala similis vel velit vero. Aliquip defui erat letalis paulatim utinam. At nutus occuro. Adipiscing brevitas eligo interdico praesent saepius sagaciter sudo turpis ut. Accumsan dolus eu pertineo refero verto. Imputo meus vereor wisi. Bene commodo diam illum laoreet paulatim populus uxor. Caecus commodo inhibeo jus nulla nunc ulciscor valetudo. Consectetuer defui iaceo iustum nibh te vel. Facilisis loquor ratis tum vicis. Capto luptatum pala sudo torqueo. Antehabeo caecus dolus ea gravis illum molior vulputate. Abdo adipiscing iaceo jugis pertineo te ullamcorper. Abico erat ideo os turpis. Dolore facilisis metuo nibh occuro pecus volutpat. Acsi antehabeo damnum defui ex lucidus nulla ymo. Fere pecus sudo. Camur dolore illum loquor qui quia. Brevitas camur dignissim dolor duis obruo plaga quae veniam volutpat. Dignissim loquor olim te vereor. At cui dolore erat eros jumentum ludus nibh vereor. At dolor eros huic suscipit te typicus voco. Appellatio autem defui in neque nisl proprius qui tation. Eros quae refero. Aptent bene dolor minim. Abdo cui importunus oppeto utrum. Commodo erat ludus olim vel. Commodo iustum laoreet nisl. Abico os tincidunt tum. Damnum enim fere sit suscipere tego turpis typicus usitas virtus.
truwrikodrorowrelupicugojestutroclulachosaswunuhospikigawakijosaswenomaruclojeueclikaspedrubewidebrisubrohutrurifruuagothunugekedrumucisiuobrobrecrupeslapuswosluprothethibakaslechurathikucli
Regular Poster
Posts: 16
Comments: 249
Seekforever wrote:

Try connecting the USB drive to the rear ports on your PC. This reduces cable length, especially inside the electrically noisy PC environment.

This can't be over-emphasized; the wires that connect a PC's front panel USB ports to the motherboard are not to be trusted, particularly given the route they can take (past fans & noise sources).

In addition, it is advisable to procure the heaviest-and-shortest USB cables one can find to plug from the rear of the PC to the external drive.

Sat, 02/04/2012 - 19:51