Terminal Tip: Stop disk image verification

Sure, we've all wanted to stop the pesky "Disk Image Verification" process that starts when you want to open that .iso, .dmg, or other disk image. While this process is a precaution against possibly installing/using corrupt files, sometimes it is completely unnecessary. To stop disk image verification forever, just open Terminal and type:


defaults write com.apple.frameworks.diskimages skip-verify TRUE

If you want verification enabled again, type the same command, replacing the "TRUE" with "FALSE." While verification is off, we recommend only using disk images from trusted sources.

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Sure, we've all wanted to stop the pesky "Disk Image Verification" process that starts when you want to open that .iso, .dmg, or other...

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PCheese

Just repair the disk image in Disk Utility. You may first have to convert it to read/write if you imaged it as read-only.

August 18 2008 at 7:16 PM Report abuse Permalink rate up rate down Reply

Big John

Thanks for this!

August 18 2008 at 5:21 PM Report abuse Permalink rate up rate down Reply

Ted

Nice! I'm tired of click the skip button.

August 18 2008 at 12:17 PM Report abuse Permalink rate up rate down Reply

MfS

Now if only there was a way to cancel out of the "verifying..." time it takes after burning any kind of CD or DVD...

August 18 2008 at 11:40 AM Report abuse Permalink rate up rate down Reply

Pete Zich

The problem is you can no longer skip verification after creating an image as of 10.5, this fixes that.

August 18 2008 at 11:07 AM Report abuse Permalink rate up rate down Reply

1 reply to Pete Zich's comment

Pete Zich

Actually, this may not do what I'm talking about, I'd really like to be able to do that.

August 18 2008 at 11:11 AM Report abuse Permalink rate up rate down Reply

Raphael Salgado

What about the "The disk image you are opening may be damaged and could damage your system. Are you sure you want to open this disk image?" prompt - I make DMG images in Disk Utility for my kids' games so I don't have to insert each disc for them and have them load on startup, but I get 10 prompts at every bootup. What am I doing wrong?

August 18 2008 at 9:56 AM Report abuse Permalink rate up rate down Reply

1 reply to Raphael Salgado's comment

yagorob

this happens to me too. same scenario with the kids' programs. i dont know what causes it... i think it might have happened after a security update, or maybe after upgrading from 10.3 to 10.4? don't remember.

August 18 2008 at 7:02 PM Report abuse Permalink rate up rate down Reply

ximon

"â€¦sometimes [this process] is completely unnecessary. To stop disk image verification foreverâ€¦"
Wait, what? Wouldn't the skip button be better for those times that the process is unnecessary? Babies and bathwater spring to mind...

August 18 2008 at 9:52 AM Report abuse Permalink rate up rate down Reply

1 reply to ximon's comment

Dave

Exactly. I would rather leave this enabled because unless the image is really large, it doesn't take a long time to complete. And, quite frankly, those extra few seconds make me feel better about the contents that I'm copying out of the newly mounted volume.

August 18 2008 at 6:08 PM Report abuse Permalink rate up rate down Reply

dbs143

i don't understand. doesn't the skip button work just as well?

August 18 2008 at 9:29 AM Report abuse Permalink rate up rate down Reply

Kol. Panic

Instead of using the defaults command in a Terminal session, you can just launch Disk Utility and change the setting in its preferences.

August 18 2008 at 9:19 AM Report abuse Permalink rate up rate down Reply

Frederik Lundgren

This can be set from the preferences in Disk Utility also. Actually better from there because you can set two different options for when to check.

August 18 2008 at 9:18 AM Report abuse Permalink rate up rate down Reply