While I was successful in creating a WinPE Emerg. Disk with Home 6.1, it created a side problem. It took me some hours to figure out that the WinPE Emerg Disk creation is the cause.
With 6.1 installed, when you create such a WinPE Emerg Disk/USB, and you don't already have all the necessary info that goes into the ISO file, then, as an EaseUS guru pointed out in another posting, the EaseUS Home 6.1 s/w will automatically download this info from the network and create the ISO and burn it to disk. This is correct. What seems to also happen in this process, however, is that any external data drive if already attached to a USB port, becomes unreadable. Actually, the flash/data drive itself doesn't get corrupted but the USB driver gets corrupted and the attached USB data drive is no longer recognized or read correctly. The drive may have a letter assigned and the data drive recognized (I tried diskpart, etc... but there is no partition in it) but is unusable.
My solution was to recover my system to before-6.1, i.e. as it was with 6.0 installed and before auto-downloading info for the WinPE ISO. Now the same attached drives are read automatically and correctly and all files are there. This problem seems to be only with USB drives that remain attached during ISO creation. Unattached drives work just fine, when tried after the ISO creation.
1. Backup a system image and have a bootable disk made when you have 6.0 on, and before installing 6.1, IF you plan to make a WinPE disk (if not, maybe this problem is irrelevant).
2. Remove all attached data drives (external/USB) before installing 6.1 and making the PE Emergency Disk.
3. After you make the Disk, reboot and check that any previously attached USB (which you removed only for the time of the ISO creation) is read correctly. If not, ...
4.....reinstall the system to pre-6.1 and the same drives will work. Don't throw out the USB flash drives thinking they are corrupted. I almost did!!