Three months ago I bought HP Pavilion dv6799ec Special Edition laptop. I removed Win Vista and installed Win XP. Some time afterwards I created dual boot system with Red Hat 5 Linux as my secondary system.
For some time everything was running fine and without trouble. But recently I noticed that my Win XP performance has significantly dropped down. After some investigation with Bootvis I found out that the disk write caching is disabled.
The respective field in "Device Manager/ Disks / MYDISK / Properties / Policies" is greyed out and unselected.
I have searched a lot on the internet but the solution is still missing. First I attributed the problem to the coexistence of Linux and Win XP, but yesterday I removed everything and installed Win XP anew from scratch.
After the installation the box "Enable disk write caching" was available so I selected it, but after next restart it was greyed out and unselected again.
I am really lost...
Is it drivers? Disk? Win XP?