9660srv's job is to serve the files stored on a CD-ROM. CD-ROMs are more or less read-only, so 9660srv serves the files as read-only as well.
In most setups, the /tmp file system is "stored" in RAM. It's faster than sending the data to some storage device, and when you turn the machine off the files vanish, which matches the mental model people sometimes use when putting things in /tmp. If you want to write files that persist across reboots, you'll need to use some other kind of file system (and give it a storage partition). Assuming you're using 9front, you might start looking somewhere around here: https://fqa.9front.org/fqa7.html#7.1.2 You might give your VM two storage devices, one blank and one holding the ISO image; running the installer on the ISO image would guide you through installing a regular read/write file system on the other storage device. If you wanted to layer your changes on top of an underlying CD-ROM image, that could be done with an overlay file system. One of my students wrote one many years ago: http://9p.io/wiki/plan9/divergefs/ Later other students used it to build kernels without write access to /sys/src -- their overlay contained their source changes and also their object files. The overlay file system will still need somewhere to store files, though. Dave Eckhardt ------------------------------------------ 9fans: 9fans Permalink: https://9fans.topicbox.com/groups/9fans/T49170188f63f430d-M225108264fd4c3ddf4a231f0 Delivery options: https://9fans.topicbox.com/groups/9fans/subscription
