Installing VMware ESXi 4 vSphere from USB Drive

If you need to install Vmware ESXi (or possibly ESX) 4 on a server without an optical drive – that is, install FROM a USB drive (not “to”), here is how to do in in Windows:

1. Download and extract syslinux:

You will want – the latest at time of writing is and it works fine.

Extract it somewhere – lets say c:\syslinux

2. Insert the USB drive if you have not already, make sure it is formatted fat32, and make note of the drive letter. For our example, we will use k:.

3. Open a command prompt. (In windows Vista or 7, make sure to Run as Administrator)
Change directory to the place you extracted syslinux \ win32.

cd c:\syslinux\win32
syslinux -m -f -a {drive}:
where {drive} is the drive letter of the USB drive.

4. Extract or copy the contents of the ESX iso image to the USB drive (you can use 7zip or winrar – no need to burn it)


That should do it.

This is based on info from the following sites – I didn’t really change anything except the version, so if this doesn’t work, they these:

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