Restore .dmg containing multiple partitions to bootable USB flash drive


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# 1  
Restore .dmg containing multiple partitions to bootable USB flash drive

I have a .dmg file which was created from a disk consisting of two partitions. When I mount the dmg both partitions pop up, so I know the imaging worked properly. One partition is HFS+ and the other is FAT32.

So far, I've been unable to find a way to restore the dmg to a flash drive where both partitions are accounted for. I've tried using hdiutil, dd, asr, and rain dancing, none of which will restore the image properly with both partitions present.

I'm sure I'm misconfiguring something along the way, and I'm hoping some of you ninjas out there can direct me accordingly.

I'm working on a Mac.

Thanks!
# 2  
Did you try partitioning the flash drive first?

My question may not be helpful, but I have four macs, and a number of flash drives I use for a variety of reasons, and one of my flash drives is partitioned both FAT32 and HFS+ as I recall.

Sorry if my reply is not helpful.
# 3  
Quote:
Originally Posted by Neo
Did you try partitioning the flash drive first?

My question may not be helpful, but I have four macs, and a number of flash drives I use for a variety of reasons, and one of my flash drives is partitioned both FAT32 and HFS+ as I recall.
Thanks for your reply.

I'm able to accomplish the task using several steps, but I'm hoping there's a way to get everything done in a single command. Is this even possible?
# 4  
Without knowing what you're doing it is very hard to suggest ways to do it in fewer steps! My crystal ball just isn't working that clearly this morning.

What steps did you perform to complete your task? (Please don't include a series of steps that includes rain dancing... From experience, we have found rain dancing produces random results. And, water and electronics don't mix well together.)
# 5  
Quote:
Originally Posted by Don Cragun
Without knowing what you're doing it is very hard to suggest ways to do it in fewer steps! My crystal ball just isn't working that clearly this morning.

What steps did you perform to complete your task? (Please don't include a series of steps that includes rain dancing... From experience, we have found rain dancing produces random results. And, water and electronics don't mix well together.)
Hi, Don. Thanks for getting back to me.

I have a drive which I use to install macOS 10.14 containing an HFS+ volume and a FAT32, custom EFI volume. I have an image of that installer drive which I'd like to restore onto a USB drive. I was able to accomplish a partial restore by using Disk Utility on my Mac to format and partition the USB drive. I then manually restored the HFS+ volume from the disk image, but received an error when trying to restore the FAT32 volume saying the volume couldn't be repartitioned. And that's as far as I've been able to get.

Using dd only restores the HFS+ volume and seems to ignore the FAT32 volume.

I'd like to use the command line to do a byte-for-byte restore of the image to the disk to accomplish my goal in one step, but I haven't been successful in finding such a method.

Let me know if you need more information. Thanks!
# 6  
Bump. Any thoughts, Don? Thanks.
# 7  
Pls show e.g. your dd commands (to and fro).
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