I then did "list partition" for both the existing HDD I am trying to copy and my external USB HDD. So I removed that partiton by "select partitition 1" and then "delete partition override".
Partiton 1 was a Reserved partition of 128M that is apparently automatically created by default when the "convert gpt" command is issued. I discovered that there were 5 partitons. I then issued command list partition to check what I had. (this matches the existing HDD I am trying to copy)Ĭreate partition msr size=128 (size from MS web site, and matches existing HDD I am trying to copy) (from MS web site: Note: for Advanced Format Generation One drives, change to size=260.) (disk 1)Ĭreate partition primary size=650 (size selected to match existing HDD I am trying to copy)įormat quick fs=ntfs label="Windows RE tools" Identified my external USB HDD with list disk. (based on instructions from Microsoft technet) Thought if WinToUSB needs to have the partitions prepared on the external drive prior to running WinToUSB, it might be helpful to provide instructions for doing so in the "How to use WinToUSB" page. Is it that I need to set EFI when formatting? I will post the results when I have them. Note I was using AOMEI to set up the partitions, I intend to try again manually setting them up from command prompt commands. WinToUSB ran, said it completed, but I could not boot from the external drive, getting an error saying no bootable device found. I set up two partitions on the external USB drive (formatted as GPT, same as the running internal drive) I am attempting to "clone" an existing Win8.1 "with Bing" (OEM) to run from an external drive. So, then I tried to use WinToUSB on the Win8.1 machine.
So, while there are obviously numerous other variables and permutations, is it that depending on if the computers HDD is formatted as MBR or GPT, the external drive must be the same? I reformatted the external USB drive as GPT and it would then show up in the list. The external USB drive formatted as MBR would not show up. I then tried on a Win8.1 machine with a GPT formatted internal drive. I reformatted the external GPT USB drive as MBR and then it would show up in the list too. I could see one that was formatted as MBR. On that machine I could not see a USB attached external drive that was formatted as GPT. I was using a computer with Win7 with an internal MBR formatted HDD.
I tried and got something similar, then I played a little.
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