After installing the October 2011 recommended patch bundle on a Solaris 10 the host fails to boot. The output is {0} ok boot SC Alert: Host System has Reset screen not found. keyboard not found. Keyboard not present. Using ttya for input and output. Sun Fire V440, No Keyboard Copyright 1998-2003 Sun Microsystems, Inc. All rights reserved. OpenBoot 4.10.10, 8192 MB memory installed, Serial #54744555. Ethernet address 0:3:ba:43:55:eb, Host ID: 834355eb. Rebooting with command: boot Boot device: /pci@1f,700000/scsi@2/disk@0,0:a File and args: \ Evaluating: Out of memory Warning: Fcode sequence resulted in a net stack depth change of 1 Evaluating: Evaluating: The file just loaded does not appear to be executable. {3} ok If I do a boot -F failsafe the host come up and I'm able to mount the root device (ufs on /dev/dsk/c1t0d0s0) and nothing appears broken, i.e I can see the logfiles from the patch install etc. Root device still have 1GB+ free. Only 2 kernel patches was installed from the patch bundle: 144500-19 & 147440-02. Any hints how to debug it further, etc.