A Mac machine needs to be reformatted with Lion. I backed up the Lion dmg file when I purchased it via the Mac App Store.

I now need to create a bootable USB drive from the DMG file but I need to be able to do it in Windows, preferring open source or at least free options.

How can I do this?

3 Answers

Use TransMac, which has a 15-day trial period and works flawlessly.

1. In the left pane, right click the USB Drive and select Format Disk for Mac

2. In the left pane, right click the USB Drive and select Restore with Disk Image

3. Point to your .dmg (or choose All Files to select an .iso) file and click Open.

It will take a few minutes depending on size of .dmg and speed of USB drive, but once done you can pop it into your mac, hold down the option key when turning on the mac and choose the USB drive.

TransMac worked for me, but first you need to partition your USB drive with GPT. It will not work if partitioned as MBR. diskpart on Windows can do this:

As far as I know, the only way to properly create a bootable Lion disc/disk is to use Disk Utility on a working Mac. However, the other option is to use a Virtualbox VM to run OS X temporarily (scroll down for that info).

The guide from lifehacker:

1. Download Lion from the Mac App Store. The installer should show up in your Applications folder.

2. Right-click on the installer and hit 'Show Package Contents'. Navigate to Contents > SharedSupport and look for a file called 'InstallESD.dmg'.

3. Open up Disk Utility and drag the DMG file into the left-hand sidebar. If you're burning it to a DVD, insert your DVD, select the disk image in the sidebar, and hit the 'Burn' button. Skip down to the last step to use it.

4. If you want to burn Lion to a USB flash drive, plug it in and click on it in the left-hand sidebar in Disk Utility. Go to the Partition tab and select '1 Partition' from the dropdown menu. Choose 'Mac OS Extended (Journaled) on the left.

5. Hit the Options button under the partition table and choose 'GUID Partition Table'. You'll need this to make the drive bootable on a Mac. Hit the Apply button when you're done to format your drive (note: it will erase everything on the drive).

6. Click on the 'Restore' tab, choose the InstallESD.dmg file as the source and your flash drive as the destination. Hit the Apply button and it will create your bootable USB drive.

7. Reboot into OS X and hold the option key when you hear the startup chime. You can boot into your DVD or flash drive from there.

I know this works with Snow Leopard, but I'm not sure about booting Lion in Virtualbox. My suggestion is:

1. Acquire a Snow Leopard iso image

2. Use this guide to convert the Lion dmg into an iso

3. On Virtualbox click 'New'

4. Choose OS as Mac OS X and click on 64bit or 32 bit (depending on your system) Snow Leopard
5. Choose VDI as storage and click next
6. Click on Dynamically Allocated space
7. Give 4096 MB of Ram for optimum performance or you can also give 2048
8. Once finished click on the Virtual OS you just created and click on settings.
9. Go to storage and click on the disk below the vdi storage.
10. Click on the empty disk button on the right side of the window.
11. Choose the .iso file you converted earlier.
12. Just click ok and start the Virtual OS

protected by Community♦Sep 6 '12 at 2:36

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My mom's Vista Home Premium (32 bit) password was changed. My mom said that she didn't change it and she doesn't think anyone else here did either. So. Could this have been done remotely?

I'm running Ophcrack now, what else can we do? (I haven't tried safe mode yet.) I'm a techie and somewhat baffled. Help!

Edit:

ophcrack found empty LM but no NT hash is displayed. Entering safe mode.. Html.

Edit2:

I'm an idiot. Well sort of. Ophcrack could not crack the password which was just lowercase English letters, but for some reason, I was able to login using the orignal password in safe mode. Once in safe mode I 'changed the password' back to it's original value and was then able to login in regular mode.. It's time to run a virus scan.

2 Answers

Passwords can be changed remotely, e.g. using http://www.bo2k.com/whatis.html

If you suspect that really happened (i.e. caps lock is not pressed, the language is correct, the keyboard is OK and password was not forgotten), then it might mean your computer is compromised otherwise (e.g. have an installed rootkit), so unless you are confident you can solve that - a complete re-install might be better than simply regaining control over it.

If you were to have this problem again, I would advise on using KON-BOOT , it bypasses all windows password checking, so you can boot to windows and change the password.Its like a live cd that boot prior to windows and tricks it when asked for the password.

Great tool for hacking your own box (you can only change the pass, you can't see the oldo one)

From the site:

Kon-Boot is an prototype piece of software which allows to change contents of a linux kernel (and now Windows kernel also!!!) on the fly (while booting).

In the current compilation state it allows to log into a linux system as 'root' user without typing the correct password or to elevate privileges from current user to root. For Windows systems it allows to enter any password protected profile without any knowledge of the password.

It was acctually started as silly project of mine, which was born from my never-ending memory problems :) Secondly it was mainly created for Ubuntu, later i have made few add-ons to cover some other linux distributions.

Finally, please consider this is my first linux project so far :)

Entire Kon-Boot was written in pure x86 assembly, using old grandpa-geezer TASM 4.0.

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