my current file system MBR
sda1 (/root)
sda2 (/home)
sda3(extented)
sda4(/swap)
first can i convert MBR from GPT whitout date loss?
how should i format durring the instaliton preferably without deleting /home
should i just split the sba1 to /root and to a 250MB FAT32 flaged with boot?