I had Centos & Windows systems dual booted previously. I am replacing Centos with Arch now.
I have Centos's /boot installed on /dev/sda8 and / on /dev/sda9
When I try the following command on Arch(booted using USB) to format /dev/sda9, it doesn't allow me to do.
mkfs.ext4 /dev/sda9 /dev/sda9 is apparently in use by the system; will not make a filesystem here!
I checked whether the device is currently mounted. It is NOT! Googling the error brings up certain sites which are related to disk being setup as RAIDs. I am not using RAID too and the arch is currently being mounted on /dev/sdb(USB device).
I was able to format /dev/sda8(which was /boot partition) using
which means I have borked the ability to boot to Windows. Please help.
Reproducing(partial) output of
lsblk -f command by typing,
NAME FSTYPE LABEL sda |--sda1 vfat DellUtility |--sda2 ntfs |--sda3 ntfs |--sda4 |--sda5 ntfs |--sda6 ntfs |--sda7 ntfs |--sda8 ext4 |--sda9 LVM2_member |--VolGroup00-LogVol00 ext3 |--VolGroup00-LogVol01 swap sdb iso9660 ARCH_201310 |--sdb1 iso9660 ARCH_201310 |--sdb2 vfat ARCHISO_EFI