Be careful with Jumpstart miniroot

Last few days I’m working on debugging the Solaris 10 Jumpstart install for some old desktops (Ultra 10, Ultra 60).

Among few well-known problems, I’ve noticed such an anomaly: the whole Jumpstart session happens just fine, all the packages are installed, but at the very end I see the errors and the installation fails:

SUNWspnego.......................done.    1.30 Mbytes remaining.
SUNWsra..........................done.    1.18 Mbytes remaining.
SUNWsrh..........................done.    1.00 Mbytes remaining.

Completed software installation
Solaris 10 software installation succeeded
Customizing system files

- Mount points table (/etc/vfstab)
- Unselected disk mount points (/var/sadm/system/data/vfstab.unselected)
- Network host addresses (/etc/hosts)

ERROR: Could not open file (/etc/hosts)
ERROR: Could not set up the remote host file (/etc/hosts)
ERROR: System installation failed

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