[yocto] how do you create a non-read only root file system when making a iso based project

[blackthirt33n .]

how do you create a non-read only root files system when make an iso based
project.
I had created an iso image by doing the following

bitbake core-image-minimal
wic create directdisk -e core-image-minimal
this created an iso that did boot using qemu

qemu-system-x86_64 -boot d -cdrom ./core-image-minimal-genericx86-64.iso -m
512

But, the root file system was read-only.
What steps would I need to take to make root filesystem that can be
written to?

James
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