View source for Boot-args (iBoot variable)

These are boot arguments that the iOS [[kernel]] accepts. These can be booted with a patched [[iBoot]]; untethered [[BootROM]] jailbreaks such as [[redsn0w]] and [[checkra1n]] do this when you set custom boot-args.

= Known Boot Arguments =
{| class="wikitable"
|-
! boot-arg
! Values
! Description
! Notes
|-
| debug=#
| <code>0x09</code>: Kernel debugging
| Set kernel debug options
| 
|-
| nand-enable-reformat=#
| <code>0</code>, <code>1</code>
| Set whether or not to reformat [[NAND]] when restoring
| Used when [[Restore Process|restoring]]
|-
| pmd=#.#
| Start/end address of ramdisk
| Specify a [[Ramdisk|ramdisk]] in memory to boot from
| Used in the [[Ramdisk Hack]]
|-
| -progress
| {{n/a}}
| Enable progress bar when restoring
| Used when [[Restore Process|restoring]]
|-
| rd=?
| <code>'md#'</code>
| Specify the root device to boot from
| Used when [[Restore Process|restoring]]; same as <code>rootdev</code>
|-
| rootdev=?
| <code>'md#'</code>
| Specify the root device to boot from
| Same as <code>rd</code>
|-
| serial=#
| <code>3</code>: Debug output over serial
| Set serial debug options
| Same as <code>[[Debug-uarts (iBoot variable)|debug-uarts]]</code>
|-
| -v
| {{n/a}}
| Enable verbose booting
| 
|-
|}

= See Also =
* [[Talk:Restore Mode]]