For some reason, restoring a DMG image to a block device has been an atypically frustrating experience under Mac OS X (since Leopard – 2007). Apple Disk Utility comes back with user unfriendly errors citing an ‘invalid argument’. It insists on doing some silly ‘image scan’ which never actually works, thereby blocking any successful image restore. Delving deeper I thought it was likely some other component utilized by Disk Utility was failing and I found what it was.

10.5: Avoid 'resource Busy' Errors In Disk .. - Mac OS X Hints

It turns out that Disk Utility employs Apple’s ASR utility, stored at

To learn more you can run ‘asr’ by itself in Terminal. While

Note: Attempting to fix Could Not Validate Source – Invalid Argument manually requires technical skills which newbie lacks. Even slight mistake might bring risk to data. So, it is recommended to take the help of Mac Data Recovery tool to rescue data in case of Could Not Validate Source – Invalid Argument issue.
Thank you for mentioning the stress test, I didn't know that was a thing they could do. Hopefully it'll still refuse to turn on tomorrow, haha. I was actually so glad when it crapped out today, because now I have real evidence.

Restore a full-disk.dmg file to a raw block device Apr 14, '09 07:30:00AM. Contributed by: Anonymous Like many others, I used Disk Utility to create a disk image (.dmg) from my full disk, with the expectation that I could restore this backup at a later date. Aug 20, 2013 Even if “show configuration verbose” was indicating that everything had the SUCCESS status, switchover could lead to issues during role changes. However, Data Guard Broker in #DB12c introduced a new command, VALIDATE DATABASE, which tremendously lightens the process of information gathering to make sure role change operations succeed.

Fl reg key. regfile. shows a lot more, I’ll save you from reading that (this man page has even got a History section). Index of kmspico 10.

10.5: Avoid 'resource Busy' Errors In Disk .. - Mac OS X Hints

Yamaha piano serial number identification. Simply restore without an image scan:

Restore Dmg Could Not Validate Source