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WTF Does this mean

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I am using TIH 2010 and just started getting this error in the last few minutes of a backup

Failed to read from sector '426,519,880' of hard disk 1
Failed to read the snapshot. (0x10C45A
CRC error (0x100155)

Does anyone know the English translation of this

I am backing up a studio 1555 dell laptop running Windows 7

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CRC means Cyclical Redundancy Check and is used on hard-disks or other devices to ensure the data being read is correct. When you get CRC errors it means that the data being read is not what is expected.

My first guess is that your disk has some bad sectors on it.

Run chkdsk X: /r on the partition being backed up. Replace X in the command with the drive letter of the partition being tested. It will take some time to run since it will check all sectors in the partition not just the used ones.

Note that chkdsk may not always find errors that TI seems to be able to uncover.

will chdsk repair any bad sectors and if i hit ignore to the bad sectors when ti finds them can i still have a viable backup?

BTW I am running chdsk as we speak. i am on a different laptop.

If the /r is specified it implies a /f fix but the fix may be to just to mark the sectors as bad. I'm not sure but I think if it can recover the data it will keep it intact. If not, you will have some useless files.

If chkdsk reveals a lot of bad sectors (whatever "a lot" means) you should probably get another drive. If you leave the drive then be sure to run chkdsk at some interval because once a disk starts to fail it never gets better.

i am running a new backup and completed the chkdsk r if it finds a bad sector again(in the backup) can i clik ignore and still have good backup? i believe it only found 1 problem(in chkdsk) that it says windows fixed. i will report back here after the backup.

Hello all,

Thank you for posting and helping out.

I would like to add this Knowledge Base article to the thread, hopefully it can be useful to anyone who stumbles upon this thread - Acronis Backup Software: "Failed to create volume snapshot".

Please let me know if you have additional questions.

Thank you.