To prepare physical media for an installation you must first download ISO image files and then write the ISO data to the bootable media that you need for your server. Detailed download instructions are available in Getting and Preparing OES Software
in the OES 2023: Planning and Implementation Guide.
NOTE:The size of the ISO image file exceeds the maximum capacity of a dual-layer DVD. Therefore, you can boot it from a USB device.
Table 2-5 Files to Download
|
Platform |
File needed |
|---|---|
|
64-bit server with USB port |
|
Download the ISO file from Software Licenses and Downloads (SLD).
Ensure that the checksum of the file you have downloaded is the same as specified on the download page. To get the checksum, use the md5sum <file name> command.
Insert the USB device into the system.
Launch the terminal and go to the logged-in user's Downloads directory (or default download location).
hostname:~ # cd ~/Downloads
Ensure that the USB device is attached and is recognized by the system. The SIZE column in the lsbk output is the best indicator.
hostname:~/Downloads # lsblk
Run the following dd command to write the ISO data to the USB device. For example, if sdb is the USB device identified with lsblk then the command is:
hostname:~/Downloads # dd if=OES2023-x86_64-DVD1.iso of=/dev/sdb bs=4k
(Use sudo with dd if you are not logged-in as the root user)
This process takes several minutes as dd reads the data from an input file and writes it to an output file block by block.
Before removing the device from the USB port, ensure that all cached writes to the device are flushed out to the disk using the sync command.
hostname:~/Downloads # sync
When the sync is complete, the data from the ISO image is fully copied to the USB device and the device is bootable. The new installation device can be safely unplugged from the system.