Disk Utility issue since snow Leopard Ugrade

Alright, this never seems to get old.

I'm running Snow Leopard OS X 10.6.8 and am trying to restore a windows7 iso on my external harddisk so I can boot it from there and install it on my partition. Here's what I did and tried:

First I converted the .iso file to a .dmg using Terminal

hdiutil convert /folder/folder/file.iso -format UDRW -o /folder/folder/file.dmg

That worked perfectly fine. Now I opened Disk Utility and tried to Restore the .dmg onto my External Hard Disk (Which I Ereased and is formatted HFS+). That didn't work. I got the following error.

"Restore Failure Could not validate source - invalid Argument"

I tried the same thing but instead of picking the .dmg as the source I opened it first and set the actual volume as the source (the white thing).

"Restore Failure Could not validate source - error 254"

So that didn't work either. I tried scanning for restore. Got an error too. Invalid argument or something.

So I ended up trying to use terminal. (I'm a terminal philistine, but I found those suggestions from guys who were facing the same issues)

I typed in:

sudo asr restore -noverify -source /Users/xx/Desktop/Windows_7.dmg -target /Volumes/HFS+

That's what I got:

Validating target...done

Validating source...

Could not detect format of volume on device /dev/disk2

Could not validate source - Fehler 254

Btw I'm logged in as Admin. I purchased Superduper but no help with that. It seems to be restoring the dmg but when it sais it's finished there is no image on the HFS+ partition.

Another interesting thing I found out. I used my OS X Snow Lepard .dmg, mounted it and restored the volume onto the HFS+. What do you know. It worked perfectly fine. Restarted my iMac and when pressing the alt key, I was able to select the volume.

Any ideas?

same problem here. i created a dmg file using DU from a multi partition drive. now trying to restore it to another drive with same capacity but getting "Could not validate source - Invalid argument" error.

btw, i am using ML

I fixed it. Like I said SuperDuper restored the image that I made in Disk Utility, that Disk Utility itself would not restore. I might have had to run Chameleon on it to make it bootable, but it worked wonders. It's free. Check it.

Jannyboy wrote:

Alright, this never seems to get old.

I'm running Snow Leopard OS X 10.6.8 and am trying to restore a windows7 iso on my external harddisk so I can boot it from there and install it on my partition. Here's what I did and tried:

I'd be very surprised if you could restore an NTFS-based operating system to an HFS+ volume and expect it to work. The only hope you might have is running asr to restore the image as a bitstream instead of its default behaviour of file-by-file. Even so, this just doesn't seem feasible to me.

@Skip Nordenholz

Thanks for this tip, I was trying to restore the RecoveryHD partition of a MBP toshiba HDD aftre partitioning with linux crashed it. These instructions were the only thing that worked.

Note fo newby, "+<disk image path>+" would be something like "/Volumes/path.. ../filename.dmg"

Use the command line tool asr, type

sudo asr imagescan --source +<disk image path>+ --filechecksum

You will need to enter your adminstrator password due to the sudo.

Cheers

remoteOne's tip worked for me. I first needed to convert the disk image to Read Only. But once I did that, Disk Utility was willing to restore the image for me. I suppose I could have also done it with asr as well. Thanks!

It works for me!