OS/2 2.00 build 6.123

OS/2 2.00 build 6.123 is the February 1991 beta of OS/2 2.0. On 10 July 2018, Michal Necasek from the OS/2 Museum blog was able to gain a copy of this build and released it shortly after. On the surface, this build is still very similar to IBM OS/2 1.30.2, although it contains a darker color scheme. Internally, the kernel has been ported to the 32-bit protected mode available on the 386 and later x86 processors. Most notably, this allows running multiple DOS boxes, which wasn't possible in OS/2 1.x. This is the last build to include Microsoft copyright notices in the setup following the split between IBM and Microsoft's development on OS/2.