How To Install Windows on an HDD/SSD (No USB Drive Required)

Installing Windows without a USB drive is possible by creating a virtual boot partition with EasyBCD. This method transforms part of your hard drive into a bootable installer, making the process efficient and reliable.

Tools You Need

• A Windows ISO (Windows 10 or 11, downloaded from Microsoft).
• EasyBCD (boot configuration tool, free for home use).
• At least 10 GB of free space to create a new partition.

Create a Virtual Boot Partition

• Open Disk Management (Windows Key + X → Disk Management).
• Shrink your main drive (C:) by about 10 GB (10240 MB). In some cases, you can shrink 9 GB (9216 MB) and extend later during setup.
• Create a new simple volume using the unallocated space.

Copy Windows Setup Files

• Mount the Windows ISO (right‑click → Mount).
• Copy all files from the mounted ISO into the new 10 GB partition.
• This partition now contains the full Windows installer.

Configure Boot with EasyBCD

• Install and open EasyBCD.
• Go to Add New Entry, then the WinPE tab.
• Select WIM Image (RAM Disk) as the type.
• Browse to the new partition → sources folder → select boot.wim.
• Name the entry (e.g., Windows Installer) and click Add.
• In Edit Boot Menu, confirm both entries appear:
  • Your current Windows installation.
  • The new Windows Installer option.
• Save settings.

Boot into Installer

• Restart your PC.
• At boot, choose the Windows Installer entry.
• The system will boot into Windows Setup, just like a USB installer.
• Follow the normal installation steps:
  • Delete old system partitions (do not delete the installer partition).
  • Select the remaining unallocated space for installation.
• Windows will install, reboot several times, and guide you through the Out-of-Box Experience (OOBE).

Finalize

• Once complete, you’ll have a fresh Windows installation.
• You can keep the installer partition for future reinstalls or delete it later via Disk Management.
• If deleted, adjust partitions as needed (recreate recovery partition, extend C:, etc.).

This approach eliminates the need for external media and leverages EasyBCD to create a reliable installer partition. With careful setup, you can streamline Windows installation and even reuse the partition for future upgrades.