HOWTO use Boot-Repair in a 64bits session?

Asked by Jwtiyar Nariman on 2012-09-16

When using Boot-Repair from a 32bit liveCD, it displays the following message:
""64bits detected. Please use this software in a 64bits session."

What should I do?

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Jwtiyar Nariman (jwtiyar) said : #1

i have used boot repair many times before but when i created bootable usb and installing boot repair , boot repair cant reinstall GRUB because of this error ?
""64bits detected. Please use this software in a 64bits session. (Please use which contains a -compatible version of this software.) This will enable this feature.""
thats my boot-info:


YannUbuntu (yannubuntu) said : #2

Hello Jwtear,

Boot-Repair asks you to use a 64bit session, because you have a 64bit system installed on your disk.

You can use Boot-Repair in a 64bit session by:
1) either boot Boot-Repair-Disk, choose "64bit session"
2) OR boot Ubuntu-Secure-64bit, choose "Try Ubuntu", and run Boot-Repair
3) OR boot Ubuntu-64bit, choose "Try Ubuntu", install and use Boot-Repair

Jwtiyar Nariman (jwtiyar) said : #3

thank you
can i burn Boot-Repair-Disk to USB?

YannUbuntu (yannubuntu) said : #4

Yes. You can create the liveUSB via LiliUSB, or UnetBootin. The tool included in Ubuntu (USB-creator) won't work as Boot-Repair-Disk is based on Debian stable.

YannUbuntu (yannubuntu) said : #5

(if you have other questions, please ask them separately: )

In #2, there are 3 choices. Could you please explain 3) in more detail? The only deb files I can see at the PPA web site are i386, not 64-bit. If I boot Ubuntu-64bit and choose "Try Ubuntu" is there anything I am supposed to be able to do short of booting from a different CD?

YannUbuntu (yannubuntu) said : #7

Hi Paul,
the DEBs (and PPAs) are the same for 32 and 64bit.

If you boot Ubuntu-64bit, then choose "Try Ubuntu", then you will be in 64bit session.

Thanks for your reply. I now know what my problem was. My IT person gave me a 32-bit Ubuntu 12.10 CD instead of a 64-bit one, and I am trying to repair an existing 64-bit 12.04 Kubuntu installation on software RAID (RAID1).

As far as I can tell, I need to use the 64-bit Ubuntu 12.10 CD so that it has the software raid drivers, and is 64 bits, then install boot-repair as per #2 choice 3). In that case, it should no longer complain about 32 bits. I can't use the Ubuntu 12.04 Live CD because it does not support software RAID, and I can't use the Ubuntu 12.04 Alternate CD because it does not have "Try Ubuntu." Is all of this correct? Does it make sense to you? Should I post my question (which CD to use, how to install boot-repair) elsewhere?

YannUbuntu (yannubuntu) said : #9

Boot-Repair asks you to use a 64-bit session, because it detected that you have a 64bit installed Linux on your hard disk. So you need to use a 64-bit Ubuntu disk.

Boot-Repair cannot be installed on an Alternate disk which have no "Try Ubuntu" menu), only on standard live-disk.

Standard Ubuntu live-disk don't come with RAID support, but don't worry: when you use Boot-Repair on it, Boot-Repair will automatically propose to enable RAID.

George (shep28paul) said : #10

I need to find out what my system is using 32bit or 64 bit how and where is this located and how does a person that does not no how to use Ubuntu 12.4 find this info out???

Contact info is
George Sheppard @ <email address hidden>

PERCE-NEIGE (perce-neige) said : #11

Same here. I had no problem with it before, on the same computer and same live-usb, but when I launched the live usb again (after installing an OS, and tweaking the grub), it says now that my system is 64 bits (same message than this post). I don't know where is the instruction that makes it think I'm not on a 32 bits system.

Can you help with this problem?

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