如果未将保存根 (/) 文件系统的分片的分区标记设为 root，Oracle Solaris 安装程序将不会显示 "Upgrade"（升级）选项。如果在标记来宾的引导磁盘时未显式设置该标记，则会发生此情况。可以按如下所示使用 format 命令设置分区标记：
AVAILABLE DISK SELECTIONS: 0. c0d0 <SUN-DiskImage-10GB cyl 282 alt 2 hd 96 sec 768> /virtual-devices@100/channel-devices@200/disk@0 1. c4t2d0 <SUN146G cyl 14087 alt 2 hd 24 sec 848> /pci@400/pci@0/pci@1/scsi@0/sd@2,0 2. c4t3d0 <SUN146G cyl 14087 alt 2 hd 24 sec 848> /pci@400/pci@0/pci@1/scsi@0/sd@3,0 Specify disk (enter its number)[0]: 0 selecting c0d0 [disk formatted, no defect list found] format> p PARTITION MENU: 0 - change `0' partition 1 - change `1' partition 2 - change `2' partition 3 - change `3' partition 4 - change `4' partition 5 - change `5' partition 6 - change `6' partition 7 - change `7' partition select - select a predefined table modify - modify a predefined partition table name - name the current table print - display the current table label - write partition map and label to the disk !<cmd> - execute <cmd>, then return quit partition> 0 Part Tag Flag Cylinders Size Blocks 0 unassigned wm 0 0 (0/0/0) 0 Enter partition id tag[unassigned]: root Enter partition permission flags[wm]: Enter new starting cyl[0]: 0 Enter partition size[0b, 0c, 0e, 0.00mb, 0.00gb]: 8g partition> label Ready to label disk, continue? y partition>