06-28-2009
That's a relief I was quite worried that I aided and abetted you in breaking your system!
There is a remount option of the mount command which will mount it read-write, but I don't know if that works for /.
My Solaris is freshly installed, so I will try (once I get past all the "welcome", "did you know" and "configuring...." stuff that it throws up the first time you do anything on it.
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LEARN ABOUT X11R4
systemd-remount-fs.service
SYSTEMD-REMOUNT-FS.SERVICE(8) systemd-remount-fs.service SYSTEMD-REMOUNT-FS.SERVICE(8)
NAME
systemd-remount-fs.service, systemd-remount-fs - Remount root and kernel file systems
SYNOPSIS
systemd-remount-fs.service
/lib/systemd/systemd-remount-fs
DESCRIPTION
systemd-remount-fs.service is an early boot service that applies mount options listed in fstab(5) to the root file system, the /usr file
system, and the kernel API file systems. This is required so that the mount options of these file systems -- which are pre-mounted by the
kernel, the initial RAM disk, container environments or system manager code -- are updated to those listed in /etc/fstab. This service
ignores normal file systems and only changes the root file system (i.e. /), /usr and the virtual kernel API file systems such as /proc,
/sys or /dev. This service executes no operation if /etc/fstab does not exist or lists no entries for the mentioned file systems.
For a longer discussion of kernel API file systems see API File Systems[1].
SEE ALSO
systemd(1), fstab(5), mount(8)
NOTES
1. API File Systems
https://www.freedesktop.org/wiki/Software/systemd/APIFileSystems
systemd 237 SYSTEMD-REMOUNT-FS.SERVICE(8)