Lines Matching +full:boot +full:- +full:partitions

30 .Nd GPT bootcode for UFS on BIOS-based computers
33 is used on BIOS-based computers to boot from a UFS partition on a
34 GPT-partitioned disk.
37 .Cm freebsd-boot
48 boot from, as described under
54 switches from auto-boot to interactive mode.
56 filename, and boot option flags, as described in
57 .Xr boot 8 .
59 The GPT standard allows a variable number of partitions, but
61 only boots from tables with 128 partitions or less.
64 checks and manages several attributes of GPT UFS partitions.
65 .Bl -tag -width ".Cm bootfailed"
67 Attempt to boot from this partition.
72 will attempt to boot each one until successful.
74 Attempt to boot from this partition only one time.
80 Multiple partitions may have the
88 attribute marks partitions that had the
90 attribute set, but failed to boot.
95 .Sx "POST-BOOT ACTIONS"
102 will boot from the first UFS partition found.
107 an already-working computer.
113 The next boot is attempted from the test partition.
115 After a successful boot of the test partition, a user script can check
121 attribute is cleared after an attempted boot, a failed boot will not
122 leave the system attempting to boot from a partition that will never
124 Instead, the system will boot from the older, known-working operating
128 attribute is set on any partitions, booting will be attempted from them
130 If no partitions with
138 .Cm freebsd-ufs
139 partitions with only the
141 attribute set, indicating a failed boot, are set to
145 .Cm freebsd-ufs
146 partitions.
147 Boot behavior depends on the combination of
151 attributes set on those partitions.
152 .Bl -tag -width ".Cm bootonce + .Cm bootme"
155 .Cm freebsd-ufs
156 partitions with both of these attributes.
159 attribute is removed and the boot attempted.
162 .Cm freebsd-ufs
163 partitions with the
172 attributes are found on any partitions, booting is attempted from the
174 .Cm freebsd-ufs
176 .Sh POST-BOOT ACTIONS
180 .Cm freebsd-ufs
181 partitions on all GPT disks.
182 Partitions with the
185 .Dq boot from X failed
187 Partitions with only the
190 .Dq boot from X succeeded
194 attributes are cleared from all the partitions.
200 .Bl -tag -width /boot/gptboot -compact
201 .It Pa /boot/gptboot
203 .It Pa /boot.config
204 parameters for the boot blocks
210 .Cm freebsd-boot
226 .Bd -literal -offset indent
227 gpart bootcode -b /boot/pmbr -p /boot/gptboot -i 1 ada0
232 .Bd -literal -offset indent
233 gpart bootcode -p /boot/gptboot -i 1 ada0
239 .Bd -literal -offset indent
240 gpart set -a bootme -i 2 ada0
248 .Bd -literal -offset indent
249 gpart set -a bootonce -i 2 ada0
252 .Xr boot.config 5 ,
254 .Xr boot 8 ,