"Installing bootloader" does take about 30seconds for me now, while it used to take only about 2seconds. bootloader.png
I report it against 0.4.15-dev-2689-ge70df4c.
It is a regression:
reactos-bootcd-0.4.15-dev-2022-g44eecfa-x86-gcc-lin-dbg.iso still fast
ReactOS-0.4.14-RC-71-gcfc2431-iso still fast
I am pretty sure, that it is caused by some MM/FS-write-caching-changes, because I also noticed that the copy-performance during 1st stage flie-copy is a bit slower than before and especially less linear in progressing, I do even get some workqueue deadlocks detected:
I guess, that when the bootsector low-level-access happens, then all the queued outstanding stuff from the 1st-stage-file-copying has to be persisted at once and that may cause the "hang".
Therefore the question: Can we explicitly disable that kind of caching during 1st stage copying to regain the speed when writing bootsector and also to make the copy-progress more linear again?