How To Extract a Basetar from a BCM ISO

How to Extract a basetar from a BCM ISO

An OS basetar (used to create certain images) can be extracted from the downloaded BCM ISO by mounting it locally and finding the basetar within the ‘data’ directory.

You’ll need to mount it locally, with a command like:

# mount -o loop <path to ISO> <mount point>

For example:

# mount -o loop /root/bcm-10.0-rocky9u3.iso /mnt
mount: /mnt: WARNING: source write-protected, mounted read-only.
# cd /mnt
# ls
3rd-party-licenses.pdf boot BRIGHTDATA.md5 data EFI efi.img grub isolinux OSS-Written-Offer.pdf python README.ADDON README.BRIGHTUSB README.MODIFY.BRIGHTISO.md

# cd data/
# ls

bcminstallerfiles.tgz packages ROCKY9u3.tar.gz

"ROCKY9u3.tar.gz" is the basetar.