Active2 years, 9 months ago
I want to do it because I want to install Windows 7 and my BIOS menu doesn't appear; it skips to grub2 menu at start, but that's another story... Is there a way to boot the Windows 7 installation iso directly from grub2?
user208513user208513
Nov 01, 2010 Is it possible to load grub2 from bootmgr? Maybe I should explain what I want to do. I have a portable usb hdd. I use windows 7 boot loader. It has a menu with 3 options (winpe3 x86,winpe3 x64 and grub4dos). Boot and Install Windows 10 using grub [closed]. Universal USB Installer and Windows 7 USB DVD Download Tool. Browse other questions tagged boot grub2 windows. Boot Windows 7 iso from grub2. But in the end I put the Windows install on a partition on a USB using the Windows 7 USB/DVD download tool and chainloaded to that. If all fails you can try using same boot.wim from windows 7 x32 install to deploy Windows server 2008 x32/64, it might work as a workaround. I do not have any version of Windows server 2k8 at the moment, but if you upload boot.wim somewhere, I could take a look.
3 Answers
Yeah, you'd think something like this would work:
But Windows will just balk at that.
If you happen to have at least 4GB RAM, you can opt to load the whole DVD iso in memdisk and boot off that. To do that, download SysLinux and extract the
memdisk
file into your boot
directory. Then you need to add code to Grub2 something like thisHowever, I'm not going to even test the code, as putting 3+ GB of data into RAM is just plain wrong (from an idealogical standpoint). No, I really wanted what you want, but in the end I put the Windows install on a partition on a USB using the Windows 7 USB/DVD download tool and chainloaded to that. Sorry there doesn't seem to be any other way that I can see.
WarpspaceWarpspace
Technically installing from windows's
.iso
file can't be possible. You can boot from the .iso
using grub but after that Windows will loss contact with the mounted location or it is not capable of it. So both grub
& Windows should aware of mount and boot. Currently Windows doesn't support. So you need to extract/copy the content of
Ron.iso
to root of a partition and then chain-load into it using grub
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Booting Windows XP with grub4dos
Booting the actual ISO with grub legacy or grub2 won't work, but with older windows versions (i.e. XP) it is possible to unpack the i386 folder from the ISO to the USB stick, and then use grub4dos to call the bootloader:
or
This won't work with newer windows versions or with newer hardware.
Booting Windows 7 with grub2
With grub2 apparently something like this could work for Windows 7:
Option A assumes your bootable USB stick/HDD is the first device and has a msdos style partition table. Adjust to match your configuration. If your boot device has a GPT partition table, then most likely you'll need to use
(hd0,gpt1)
(GPT in general is trickier to set up). Option B uses the drive's unique UUID, which can be seen on Linux with
sudo blkid
or on OSX with e.g. diskutil info disk0s1
(or Disk Utility > Info).The final entry might look for example like this:
ccpizzaccpizza
Not the answer you're looking for? Browse other questions tagged grub2windowsisobios or ask your own question.
Hi All. I've spent a lot of time trying to do subj.To be more clear. I have an iso image which uses GRUB2 (specifically, grub-1.97.1) as boot loader. (Some beautiful menus etc.) My task is to create bootable USB drive which after booting will behave exactly as the original CD would, by booting from iso image or by just copying image's contents to the USB disk.
The problem is that I cannot find a way to install GRUB2 (or GRUB2-based grub4dos, not legacy grub) into USB stick.
Though grubinst has option --grub2, it requires g2ldr which isn't included in grub4dos bundly (and I really don't understand why).
After hours of surfing I found some strange iso images like grub2-2009-01-13.iso.bz2 and copied g2ldr from them. But after booting from USB disk, theres is an outout:
Install Windows 7 From Usb Stick
[codebox]Welcome to GRUB!error: the symbol 'grub_machine_fini' not found
Entering rescue mode
[/codebox]
Install Windows 7 From Windows 10
And no beautiful menus etc.
Please help as I have no ideas by now...