how to run fsck on disk image

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how to run fsck on disk image

I want to run fsck on a disk image before I use it to restore (replace) a corrupted volume. Using Terminal, what would be the proper command, syntax, and options for this operation?

I've just recently become acquainted with Terminal and line commands, so syntax and specific options aren't part of my computing vocabulary. I'm using Terminal 2.1.2, bash, OS 10.6.8.

Ultimately, I'm trying to restore an image to a secondary startup volume (external drive). The image is mounted on my desktop and I want to check it for errors before I use it. Disk Utility runs "repair disk" successfully but the integrity of the image is suspect.

I've looked through numerous posts around the web and haven't found the specific answer I need; any help is appreciated.

MacBook Pro, Mac OS X (10.6.8), 4G ram, external HD's

Posted on Sep 2, 2011 11:05 AM

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Answer 1

baltwo

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Sep 2, 2011 11:13 AM in response to Gmusic

You don't need the Terminal or fsck, just use **'s scan for restore option.

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Answer 2

Gmusic Author

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Sep 2, 2011 11:58 AM in response to baltwo

Went to **, selected scan images for restore, navigation pane pops up and "scan" is grayed out. Selected mounted disk image in left side of nav window, still grayed out; selected desktop folder to locate mounted image, not there.

Tried to scan image in its finder location, initiate scan, Msg: "Unable to scan [image name]." (Resource temporarily unavailble).

Ejected/unmounted the image, try again. "Unable to scan [image name]." (Invalid argument).

IMaybe I'm not on the right track but is it possible to fsck this image in Terminal?

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Answer 3

baltwo

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62,396 points

Sep 2, 2011 12:29 PM in response to Gmusic

If those steps are failing, then I surmise the image is borked. Recreate it with Disk Utility and try again.

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Answer 4

Gmusic Author

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Sep 2, 2011 2:40 PM in response to baltwo

Thanks for your replies, I've tried every angle I can think of in ** and no progress. I'll try plan B.

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