[Bug 1198846] Re: [efi boot to unexpected media] plug in live usb and DVD at the same time, try to boot from DVD but it comes to usb
@Phillip, Sorry, the original description might be a little bit misleading. Yes, we were taling about an old release on the recovery partition and a new release in the dvd. What we found is, user can never boot into the new release in the dvd. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1198846 Title: [efi boot to unexpected media] plug in live usb and DVD at the same time, try to boot from DVD but it comes to usb To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/1198846/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1198846] Re: [efi boot to unexpected media] plug in live usb and DVD at the same time, try to boot from DVD but it comes to usb
*** This bug is a duplicate of bug 1097570 *** https://bugs.launchpad.net/bugs/1097570 ** This bug has been marked a duplicate of bug 1097570 grub2-signed can not find the right device when there are two filesystems containing the file '.disk/info'. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1198846 Title: [efi boot to unexpected media] plug in live usb and DVD at the same time, try to boot from DVD but it comes to usb To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/1198846/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1198846] Re: [efi boot to unexpected media] plug in live usb and DVD at the same time, try to boot from DVD but it comes to usb
@Phillip, This actually affects users when there is a partition on hard driver with install image (for recovery use for example). If deleting this partition is not an option, user can never boot into CDROM. I think it will be great if efi grub application can be able to know which partition/media it is on (maybe from BIOS information) and find the grub.cfg on the same partition to avoid doing search. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1198846 Title: [efi boot to unexpected media] plug in live usb and DVD at the same time, try to boot from DVD but it comes to usb To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/1198846/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1198846] Re: [efi boot to unexpected media] plug in live usb and DVD at the same time, try to boot from DVD but it comes to usb
From your initial description it sounded like you were talking about having the exact same image in both places. If that is the case, then there is no telling them apart, and which is used doesn't really matter. If you are talking about say, an old release on the recovery partition and a new release in the dvd, that would be something different. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1198846 Title: [efi boot to unexpected media] plug in live usb and DVD at the same time, try to boot from DVD but it comes to usb To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/1198846/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1198846] Re: [efi boot to unexpected media] plug in live usb and DVD at the same time, try to boot from DVD but it comes to usb
I think this behavior is raised by the grub search command in memdisk:
1. in the reproducing step 8, press e and then press F2 to make ourselves to be
dropped into the grub shell
2. cat (memdisk)/grub.cfg, shows
grub shell cat (memdisk)/grub.cfg
if ! search --file --set=root /.disk/info: then
search --file --set=root /.disk/minu-info
fi
set prefix=($root)/boot/grub
if [ -e $prefix/x86_64-efi/grub.cfg ]; then
source $prefix/x86_64-efi/grub.cfg
else
source $prefix/grub.cfg
fi
3. investigate the search behavior,
it seems that grub iterates hd before cd always.
grub-core/disk/efi/efidisk.c
static int
grub_efidisk_iterate (int (*hook) (const char *name))
{
struct grub_efidisk_data *d;
char buf[16];
int count;
for (d = fd_devices, count = 0; d; d = d-next, count++)
{
grub_snprintf (buf, sizeof (buf), fd%d, count);
grub_dprintf (efidisk, iterating %s\n, buf);
if (hook (buf))
...return 1;
}
for (d = hd_devices, count = 0; d; d = d-next, count++)
{
grub_snprintf (buf, sizeof (buf), hd%d, count);
grub_dprintf (efidisk, iterating %s\n, buf);
if (hook (buf))
...return 1;
}
for (d = cd_devices, count = 0; d; d = d-next, count++)
{
grub_snprintf (buf, sizeof (buf), cd%d, count);
grub_dprintf (efidisk, iterating %s\n, buf);
if (hook (buf))
...return 1;
}
return 0;
}
4. usb will be regarded as hd device, so the search command always set
the variable root as usb (more precisely, any other hard disk devices
with .disk/info) instead of our selection, DVD
--
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https://bugs.launchpad.net/bugs/1198846
Title:
[efi boot to unexpected media] plug in live usb and DVD at the same
time, try to boot from DVD but it comes to usb
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[Bug 1198846] Re: [efi boot to unexpected media] plug in live usb and DVD at the same time, try to boot from DVD but it comes to usb
is there any way to parse the bios information about where the grub efi application is loaded to grub instead of using the search command?? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1198846 Title: [efi boot to unexpected media] plug in live usb and DVD at the same time, try to boot from DVD but it comes to usb To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/1198846/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1198846] Re: [efi boot to unexpected media] plug in live usb and DVD at the same time, try to boot from DVD but it comes to usb
Private bug which affects Ubuntu-recovery : bug #1185375 ** Also affects: oem-priority Importance: Undecided Status: New ** Also affects: oem-priority/precise Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1198846 Title: [efi boot to unexpected media] plug in live usb and DVD at the same time, try to boot from DVD but it comes to usb To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/1198846/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1198846] Re: [efi boot to unexpected media] plug in live usb and DVD at the same time, try to boot from DVD but it comes to usb
This isn't really a bug. Given two identical install images on different media, the system can't figure out which one you intended to use. Instead of giving it both, just give it the one you intend to use. ** Changed in: grub2 (Ubuntu) Status: New = Won't Fix -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1198846 Title: [efi boot to unexpected media] plug in live usb and DVD at the same time, try to boot from DVD but it comes to usb To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/1198846/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
