I have to admit, that I was surprised when they all came back good! We already had the SDK on 3 1/2" disks, so we could compare the contents. Oddly enough all the executables, libraries and headders are a match but the helpfiles have a different CRC, despite being the same timestamp, and size.
I've installed it on 86box, and then converted the boot disk from 5 1/2" to 3 1/2" inch so I could install it on VMware and my IBM PS/2 model 80. That's another surprise I thought for sure the PS/2 drivers would be missing from the 5 1/4" disk version, but they were there!
On VMware the AT version of the PS/2 mouse driver locks the system up, but I copied the one from 6.123 and it works fine. Although there is no MS-DOS sessions working.
Also as a follow up on my 'dont waste money on a math co-processor' if you have the 'passthrough math' on 86box the dos sessions misbehave big time. Using the softfloat option for more accuate floats results in working MS-DOS. - Turns out OS/2 betas really did rely on a FPU!
You'd be surprised! Cleared my childhood house recently and got a box of floppies. Only 3 out of about a hundred were unreadeable! Had much worse results with my old CDs. Go figure...