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Acronis can't read sectors from hidden partition

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Hello,
I'm trying to use the Acronis 2013 boot media to image a drive. However, Acronis has reported that it can't read some sectors and gives me the option to ignore or cancel.

The drive has one hidden partition and one OS partition (C:). I've tried running chkdsk /r on the c: drive but no errors were found. I am guessing that the bad sectors are located on the hidden partition.

I'm having a hard time figuring out if there's a way to run chkdsk or a similar scanner on the hidden partition. There are some posts that say you just have to run chkdsk /b (I am trying that). The chkdsk documentation indicates that you can run chkdsk on a volume, and I'm not sure but maybe a volume is an entire disk, in which case I need to figure out the volume name. Some other posts say you have to assign a drive letter to the hidden partition (I don't like that idea, I don't want to mess with the hidden partition, even if it is slightly corrupted).

If I don't clone the entire disk, just the c: partition, then if I restore my c: drive to another disk, there will be issues because I didn't get the MBR, right?

Does anyone have any experience with this?

Thank you!

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Run chkdsk /r on each partition of that drive. If there are hidden partitions, assign letters to them so you can chkdsk.
Also run a drive checking utility from the drive manufacturer, as those sometimes catch errors missed by chkdsk.

Yes, I have run chkdsk /r on all lettered partitions. I ran chkdsk /b and got a few more bad clusters reported. I installed the Seagate drive tool, but it crashes on several different systems. I don't want to assign a letter as I'd rather maintain the integrity of the hidden partition.

Benjamin,
If the hidden partition has bad sectors, it has no integrity.
I would suggest that you assingn a letter to the hidden partion
Run
CHKDSK X: /R (WHERE X IS THE HIDDEN PARTITION LETTER)
After completion, remove the drive letter.

If you want to be extra caution, take another backup which includes the hidden partiton before you run chckdsk on the hidden partition.

Not necessarily. Empty space in a partition can have bad sectors. I'm holding out for a better option :)

Drive letter assignments need not be permanent. I advise you to assign one temporarily to each hidden partition. It makes no sense to continue relying on a drive that may have errors.

Thanks all for your help. I didn't really understand the system reserved partition before so I was scared of touching it. Now I understand that there isn't much "magical" about it. However, my fix in the end was to download a seagate boot disk, which did run and did identify several bad blocks. After that, I was able to back up the disk.