1. Our problem was that we could not get the ACER-One to Boot off of the Flash Drive because the Flash Drive was not able to be Marked Active.
"You cannot use Diskpart to create a partition on removable media. Windows supports at most one MBR partition on removable media. If the media is manufactured with an MBR, that MBR cannot be altered, but the MBR is followed even if multiple partitions or logical drives are configured. If the media is manufactured without an MBR, the media is treated as a "superfloppy" and no partition structure is written to the media."
The above is from Here
Wether or not their may be other ways to, Mark Active, removable media, I don't know, . .
However, . .
2. We have decided to use the Slave Drive E: after configuring it to conform to the applicable use of either Re installing W-7 or Recovering the system that remains on the ACER.
3. I am attempting to Mark Active the OS W-7 that is on the Slave E:, so that it can be placed into the External Enclosure for a Reinstall, . . .
4. If I or We decide that a recovery of the remaining OS on the ACER will be attempted than the Slave E: HHD will need to be partitioned, so that it, (the recovery), instead of the OS reinstall will be used to
boot the ACER from.
5. You are using the words, "shrink the partition", are you defining an un-partitioned drive is in itself a single partion ?
6. If it is defined as a partition, than it can be, "Marked Active", if it can be, "Marked Active", than the data that is presently on the Slave E:, which is the W-7 OS, should be suitable for use to re-install the ACER OS.
Now having said that are we going to try to, "shrink", i.e., "re-size", the Slave E:, because we want to attempt a recovery, therefore there will be two partitions one bootable feature on each, (the OS and the Recovery), or our we going to simply re-install the OS from the present W-7 for ACER that is on the Slave E:?