On November 13, my partner and mentor Kari published a post here entitled Thank you, Microsoft – An Important Change in Windows Setup. At that time, the latest build of 1909 wasn’t in synch with what he reported there — namely, deposition of the Recovery Partition (WinRE) at the tail end of the boot/system drive rather than at its head. Right now, I’m running Build 18363.476 on my Lenovo X380 Yoga and here’s what I see for its disk layout info:
Based on Kari’s earlier reporting, I’d assumed this wouldn’t appear until 20H1/2004 went public. I was wrong, and I’m glad!
[Click image for full-sized view.]
What, Exactly, Are We Looking at Here?
The item of interest in the foregoing screecap is Disk 0, which includes the C: drive. Notice that the EFI partition leads off the order, with the Windows C: volume in 2nd place, and the Windows Recovery information last. Here’s what I see having changed:
1. The EFI partition size has increased from 100 MB to 260 MB.
2. The Windows Recovery partition (WinRE_DRV) now follows the C: partition, in keeping with Microsoft’s recommendations and best practices (see Kari’s article for an explanation).
3. The Windows Recovery partition has increased in size from 450 MB to 1000 MB (1 GB).
At least, that’s how things look on my newer Lenovo systems (two X380 Yogas and an X1 Extreme, all with 1 TB NVMe SSDs for their C: drives). My production desktop still has the old-fashioned layout, and now shows an older 450 MB partition in first place, and a 498 MB partition in next-to-last place (that drive is over-provisioned, so it’s got some unallocated space at the tail for the disk controller to grab if it needs to replace failing or problem sectors). Using the REAGENTC command, however, I see that the first partition on the C: drive remains the active recovery partition.
My best guess is that I’ll have to clean install 1909 on this machine to get the benefit of the “proper” disk organization on that PC. I’m planning on building a replacement over the Christmas holiday, so I should be seeing those results before the year is out. I’ll report back if my assumption proves false or misguided. Stay tuned.
Author: Ed Tittel
Ed Tittel is a 30-plus-year computer industry veteran. He’s a Princeton and multiple University of Texas graduate who’s worked in IT since 1981 when he started his first programming job. Over the past three decades he’s also worked as a manager, technical evangelist, consultant, trainer, and an expert witness. See his professional bio for all the details.