The flash drive needs to be at least 8 GB in size. The Snow Leopard ISO file was the same as discussed in this answer, which should be the same ISO you have linked to in your question. Use the Finder application to mount the Snow Leopard ISO file. Use the Disk Utility application to erase the flash drive, as shown below. . Open Disk Utility. Select the Hard drive you want to resize and put the installer on. This is not 'Macintosh HD', in my case it is '260.06 GB Hitachi HTS5.'. Select the 'Partition tab' and decrease the size of your main partition (In my cas. Hello everyone, i was wondering if it is possible to install snow leopard without a superdrive or the remote disc utility, but from an external hard disk drive which the snow leopard files have been put on. I have already googled to the end of the world. No success so far.

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Install Snow Leopard Without Disk
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Since Mac OS X 10.5 Leopard, Disk Utility has been able to resize and add disk partitions on the fly without erasing data. Maria Langer shows how it works.
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Mac OS X 10.6 Snow Leopard: Visual QuickStart Guide

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Mac OS X 10.6 Snow Leopard: Visual QuickStart Guide

I found myself in a bit of a predicament the other day. I’d done a clean installation of Mac OS X 10.6 Snow Leopard on my new 13-inch MacBook Pro. I’m using the computer as a “test mule” for a book I’m writing about some Mac OS software that’s still in beta.

Unfortunately, the beta software isn’t behaving nicely in Snow Leopard. Although it’ll be fixed by the time the software is ready for release, the developer suggested that I work with Leopard until then. This puts me in a spot, since I’ve been trying to write brief articles about using Snow Leopard. I don’t want to uninstall Snow Leopard from my little MacBook Pro.

Although I got Leopard running successfully from an external hard disk on the same computer, more beta software problems ensued. I couldn’t tell if it was a beta problem or a problem with my weird external boot disk. I had to install Leopard on my internal drive to test.

That’s where Disk Utility’s repartitioning features come into play. Since Mac OS X 10.5 Leopard, Disk Utility has been able to resize and add partitions on the fly without erasing data. This was my solution. And since I took some screenshots along the way, I can show you how I did it -- in case you ever need to.

Warning! Warning! Danger Will Robinson!

You should never mess with the partitioning on your hard disk without first backing it up. Partitioning can go wrong; problems can occur. It is possible to lose all of the data on your hard disk. So before you do this, make sure your Time Machine backup or other backup strategy is up-to-date.

Don’t say I didn’t warn you. And don’t come crying to me if you lose data.

Repartitioning the Disk

You repartition a disk with Disk Utility, so let’s start by firing it up. You’ll find it in the Utilities folder inside the Applications folder on your hard disk (see Figure 1).

Figure 1 Launch Disk Utility by double-clicking its application icon.

The main window of Disk Utility appears. It lists the storage devices -- in this case, the internal Hitachi hard disk and optical drive in my 13-inch MacBook Pro (see Figure 2).

In the list on the left side of the window, select the hard disk to repartition and click the Partition button (as in Figure 3). The partition scheme for the disk you selected appears in the body of the window. The shaded area indicates the amount of occupied disk space.

Figure 3 The partition scheme for a selected disk appears in the window when you click the Partition button.

To resize the existing partition, drag the corner of the partition box up to reduce the size of the box. As you drag, a new value appears in the Size box. (Another way to resize a partition is to simply enter a new value in this box.)

Figure 4 Drag the corner of the partition box to resize the partition.

To add a second partition, click the + button at the bottom of the Volume Scheme area. A second partition appears (Figure 5).

Figure 5 Click the + button at the bottom of the Volume Scheme area to add another volume.

You can rename the new volume by clicking it to select it and then entering a new name in the Name box (see Figure 6).

Figure 6 Enter a new name in the Name box to rename the new volume.

Click the Apply button. A dialog like the one in Figure 7 appears. It confirms that you want to add a partition and resize the existing one. It’s important to note that it clearly states, “No partitions will be erased.”

Figure 7 This confirmation dialog appears before Disk Utility changes the Partition Scheme.

Wait while the disk is verified and the changes are made. A progress bar like the one in Figure 8 appears while Disk Utility works.

Figure 8 A progress bar at the bottom of the Disk Utility window appears as the partition changes are made.

When it’s finished, you should see two volumes on the desktop, in your Finder window sidebars, and in the Disk Utility window (Figure 9).

Figure 9 The Disk Utility window shows both partitions under the disk.

Removing a Partition

If you decide you don’t need a partition anymore, you can remove it.

Simply select it in the Volume Scheme list (Figure 9) and click the button under the list. You can then resize the remaining volume to take up the lost space. When you click Apply and confirm the change, the partition you deleted is removed -- along with all the data on it.


Although the average Mac user may never need to change a hard disk’s partition, it’s good to know that it’s possible to do it without losing any of your data. This can save a lot of time and effort when you need to repartition your hard disk.

Maria Langer is a freelance writer and the author of Mac OS X 10.6 Snow Leopard: Visual QuickStart Guide for Peachpit Press. She blogs at and shares other tips for Mac users at

About Snow Leopard Recovery Mode
How to Boot into Snow Leopard Recovery Disk
How to Reinstall Mac OS X
How to Recover Data from Mac OS X and macOS

About Snow Leopard Recovery Mode

Pre-installed into Mac, OS X Recovery is a facility provided by Apple computers that enables you to restore or reinstall Mac OS X without using a physical recovery disk. For Mac Snow Leopard, there is also the Snow Leopard recovery that helps you

How to install snow leopard without disk
  • Restore Mac from a Time Machine backup
  • Install or reinstall Mac OS X
  • Check internet connection and get help online using Safari
  • Repair or erase a hard disk or other storage devices with Disk Utility

Mac OS X recovery has two modes: standard and internet-based. The standard OS X recovery mode means working on your own computer, while Mac internet recovery mode refers to working from the Internet.

Mac OS X Internet Recovery

Newer Macs have the ability to start up directly from an Internet-based version OS X Recovery. When the Recovery System on the startup drive isn't available, your Mac will automatically use this feature. If the startup disk is damaged or replaced, Internet OS X recovery mode is very useful and lets you start your Mac directly from Apple's servers. You can perform a quick test of your memory and hard drive to check for hardware issues.

Snow leopard download

Mac Internet Recovery downloads and starts from a Recovery System image, which provides the same utilities and options as the Recovery System on a startup drive.

How To Install Snow Leopard

How to Boot into Snow Leopard Recovery Mode

  • Turn on your Mac. Simultaneously press and hold Command and R keys.
  • Release the keys when you see an Apple logo, spinning globe, or other startup screens. If a window pops up and asks you to enter a password, do as required.
  • After your computer finishes starting up, choose the option you want to use from the OS X Utilities menu.

Note: Command R not working? Snow Leopard Recovery mode not working? Try the following methods to reinstall macOS if Recovery won't work.

  • Use Internet Recovery to reinstall macOS on Mac
  • Create a boot drive to install a copy of macOS from
  • Use your Time Machine backup as your start-up drive
  • Create a Recovery partition on an external hard drive

How to Reinstall Mac OS X

Select 'Reinstall macOS' to start reinstalling macOS directly. Follow the instructions on the screen to proceed.

  • If the installer doesn't see your disk, or it says that it can't install on your computer or volume, you might need to erase your disk first.
  • Don't put your Mac to sleep or closing its lid until the installation completes.
  • The specific device model determines whether you can install the latest macOS.

See More: How to Recover Data from Mac OS X

EaseUS data recovery program for Mac provides you with the easiest solution to recover deleted or lost files on Mac (from Mac OS X 10.9 - latest macOS version) by scanning, previewing, and restoring. Read on and see the details.

When Do You Need Data Recovery on Mac OS X

  • Files loss caused by installation or update in Mac OS X
  • File system crash makes the data on Mac inaccessible
  • Virus attack leads to data loss
  • Hardware failure unexpected results in data missing
  • Mistakenly delete some crucial files

It is depressing when experiencing data loss on Mac as the data recovery is rather tricky if you are a Mac user. However, if you turn to a professional Mac data recovery software, things will get very simple. And EaseUS Data Recovery Wizard for Mac is such a powerful Mac data recovery tool that enables you to recover deleted files on any Mac devices effortlessly.

Overview of EaseUS Mac Data Recovery Tool

How To Install Snow Leopard Without Disk

EaseUS Data Recovery Wizard for Mac is an advanced and professional file recovery software for Mac devices. It is qualified to salvage, rescue, and recover lost data from hard drive/disk as well as many other storage devices, such as USB drive, SD card, digital camera, pen drive, and more. All the data lost due to file system corruption, hard drive volume deletion or corruption, disk formatting, operating system corruption, erroneous file deletion, and virus infection is recoverable.

The supported file types are DOC/DOCX, XLS/XLSX, PPT(PPT/PPTX ), PDF document, photos, videos, music, emails, archives, etc..

Snow Leopard Download

How to Recover Data from Mac OS X with EaseUS Data Recovery Software

Step 1. Select the disk location (it can be an internal HDD/SSD or a removable storage device) where you lost data and files. Click the 'Scan' button.

How To Install Snow Leopard Without Disk

Step 2. EaseUS Data Recovery Wizard for Mac will immediately scan your selected disk volume and display the scanning results on the left pane.

Step 3. In the scan results, select the file(s) and click the 'Recover' button to have them back.

Snow Leopard Recovery Mode FAQs

1. Does Snow Leopard have recovery mode?

Yes, you can enter Snow Leopard recovery by restarting your Mac and holding down the Command and R keys at startup. Hold these keys until the Apple logo appears. If you succeed, you will see a desktop with an OS X menu bar and an OS X Utilities window on your screen.

2. How long does it take to install Snow Leopard?


The Snow Leopard installation can take 45 minutes to an hour. This does not include the time to restore your Time Machine backup (depending on how much data there).

3. How do I do a clean install of Snow Leopard?

Boot from the Mac OS X Snow Leopard Install DVD, and from the 'OS X Utilities' menu, choose 'Disk utility'. From there you can reformat your hard disk. After this, you can choose Re-install OS X and perform a clean install.

4. How do I reinstall Snow Leopard without a disk?

You can reinstall Snow Leopard without a disk in three steps: first is creating the partition in Disk Utility, then copying the installation media; at last, booting into the installer.

Steps to copy the installation media and boot into reinstaller:

  • Open Disk Utility, and drag the Snow Leopard . dmg installer into the pane on the left.
  • Select the Snow Leopard .dmg, and click the 'Restore' tab.
  • Drag the Snow Leopard .dmg into the 'Source' field, then drag your newly created 'Snow Leopard Installer' partition into the 'Destination' field.
  • Make sure 'Erase Destination' is checked. Then, click the 'Restore' button to proceed.
  • Once you have set up Snow Leopard Installer partition, restart your computer and hold the 'Option' (or alt) key at bootup and select 'Snow Leopard Installer' from the list. The Snow Leopard Installer should successfully boot up and you can upgrade to Snow Leopard!