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 parti-
tion 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 lim-
itation). Default is to ignore such partitions.
AUTHOR
gptsync was written by Christoph Pfisterer.
This manual page was written by Junichi Uekawa <dancer [AT] debian.org> and
Julien BLACHE <jblache [AT] debian.org>, for the Debian Project (but may be
used by others).
Debian 2008 July 24 gptsync(8)
COMMENTS
1nax
2007-12-08 01:08:12
mitok
2I tried using this on my PC so I could tripple boot Windows 7, Ubuntu 9.10, and OS X 10.6.
After running the program in Terminal under a separate OS X 10.6 install (same computer, different drive), it returns the following:
"Data write failed at position 0: Bad file descriptor"
I first partitioned the drive I'm tripple booting on in OS X (setting it up as a hybrid MBR/GPT).
I then installed Windows 7 on the second partition (the one after the EFI partition).
After that, I installed Ubuntu 9.10 on the fourth partition (leaving a 100GB FAT32 partition in between Ubuntu and Windows, to be used for the OS X install), with the swap space immediately after (in the fifth partition).
Because of the way Ubuntu handles hybrid MBR/GPT disks, it screwed it up. Therefor, I needed gptsync to fix the problem and allow me to boot Windows 7.
However, it doesn't work, and I get the message I presented earlier in this reply.
Does anyone have any suggestions?
After running the program in Terminal under a separate OS X 10.6 install (same computer, different drive), it returns the following:
"Data write failed at position 0: Bad file descriptor"
I first partitioned the drive I'm tripple booting on in OS X (setting it up as a hybrid MBR/GPT).
I then installed Windows 7 on the second partition (the one after the EFI partition).
After that, I installed Ubuntu 9.10 on the fourth partition (leaving a 100GB FAT32 partition in between Ubuntu and Windows, to be used for the OS X install), with the swap space immediately after (in the fifth partition).
Because of the way Ubuntu handles hybrid MBR/GPT disks, it screwed it up. Therefor, I needed gptsync to fix the problem and allow me to boot Windows 7.
However, it doesn't work, and I get the message I presented earlier in this reply.
Does anyone have any suggestions?
2009-12-20 04:47:14
Daniel Hodgson
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