gptsync(8) rEFIt gptsync(8)NAME
gptsync - GPT partition table to MBR partition table synchronisation
SYNOPSIS
gptsync [-q] [-t] device
DESCRIPTION
gptsync reads the GPT partition table on device and synchronises the legacy MBR partition table with the GPT partition table. The MBR par-
tition table can hold only 4 partitions.
Legacy bootloaders or operating systems that do not support GPT require an MBR partition table; this is typically the case when using GRUB
or LILO on an Intel-based Apple machine.
OPTIONS -q Do not print any message, do not prompt to modify the MBR.
-t Truncate partitions starting or expending beyond 2 TiB (MBR limitation). Default is to ignore such partitions.
AUTHOR
gptsync was written by Christoph Pfisterer.
This manual page was written by Junichi Uekawa <dancer@debian.org> and Julien BLACHE <jblache@debian.org>, for the Debian Project (but may
be used by others).
Debian 2008 July 24 gptsync(8)
Check Out this Related Man Page
MBRLABEL(8) BSD System Manager's Manual MBRLABEL(8)NAME
mbrlabel -- update disk label from MBR label(s)
SYNOPSIS
mbrlabel [-fqrw] [-s sector] device
DESCRIPTION
mbrlabel is used to update a NetBSD disk label from the Master Boot Record (MBR) label(s) found on disks that were previously used on
DOS/Windows systems (or other MBR using systems).
mbrlabel scans the MBR contained in the very first block of the disk (or the block specified through the -s flag), then walks through every
extended partition found and generates additional partition entries for the disk from the MBRs found in those extended partitions.
Each MBR partition which does not have an equivalent partition in the disk label (equivalent in having the same size and offset) is added to
the first free partition slot in the disk label. A free partition slot is defined as one with an fstype of 'unused' and a size of zero
('0'). If there are not enough free slots in the disk label, a warning will be issued.
The raw partition (typically partition c, but d on i386 and some other platforms) is left alone during this process.
By default, the proposed changed disk label will be displayed and no disk label update will occur.
Available options:
-f Force an update, even if there has been no change.
-q Performs operations in a quiet fashion.
-r In conjunction with -w, also update the on-disk label.
-s sector Specifies the logical sector number that has to be read from the disk in order to find the MBR. Useful if the disk has remapping
drivers on it and the MBR is located in a non-standard place. Defaults to 0.
-w Update the in-core label if it has been changed. See also -r.
SEE ALSO disklabel(8), dkctl(8), fdisk(8), mbr(8)HISTORY
The mbrlabel command appeared in NetBSD 1.4.
BSD April 5, 2010 BSD