![]() When the exact same data is written to a USB disk, the OS will find a large "empty" partition and a very small "EFI boot" partition. ![]() When written to a CD, the OS will find a regular ISO 9660 filesystem. The result is an image whose contents depend on the way you look at it. Programs such as isohybrid prepare the image itself such that it simultaneously contains CD (ISO 9660), BIOS (MBR), and UEFI boot code, so that it can be written to any kind of disk without further conversion. (For example, if the CD used isolinux, the converter needs to install syslinux to the USB stick.) This requires the conversion program to actually understand how the CD image works. They try to recognize the image's contents, extract them to the USB drive, and create a whole new bootloader that – hopefully – will be compatible with the original one. Programs such as Rufus and Unetbootin don't simply "burn" the image they convert a pure CD image to a USB one. So in order to boot a CD image from USB, there are two options: Most importantly, the boot information is placed in a different location – CDs use an "El Torito" boot record at sector 17 BIOS-compatible disks use a MBR at sector 0 UEFI-compatible disks use a GPT at sector 1 and a whole separate partition to contain the bootloader. ISO images are CD images (the name comes from "ISO 9660"), and they're structured differently from "regular" disks. dd if=/path/to/iso of=/dev/rdiskX bs=1M (comments suggest "rdisk" for performance).diskutil list to find the "/dev/diskX" device.You can use plain dd, or direct imaging tools like Win32DiskImager. Try to write the image without using conversion tools (such as unetbootin). iso boots perfectly fine with VirtualBox, but has no apparent file system and fails to be imaged to any sort of USB drive? How can I create a bootable version this image for use with a "real" computer? ![]() However, there is definitely some real data in the image: Which is confirmed by mounting the image in macOS and Windows: iso using unetbootin just causes it to silently struggle, Rufus says the image is unsupported, and Etcher yields an error saying there's no file system: On a new VM, booted from the Bootable Media and successfully deployed the master image.Used Acronis Snap Deploy 5 to create an Acronis Bootable Media.Following various instructions in a Windows 10 VM hosted on macOS via VirtualBox, I: These computers have dissimilar hardware, and there is no automatic updates of any sort (let alone a centralized system.) To solve both the issue of deploying these suites and updating them, I've been attempting to use Acronis True Image. ![]() One of my duties requires having a variety of computers with a series of preconfigured software suites available for use on fairly short notice. ![]()
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