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On 05/29/2018 06:33 AM, Robert Heller wrote: > >> The UUID in the EFI boot options is 99E275E7-75A0-4B37-A2E6-C5385E600CB, which >> does not to match anything, but the system is only happy booting the old >> disk... > And at this point, it will only boot in legacy mode off the old disk. That's what I meant, I think.? Legacy mode is BIOS-compatible.? If you're booting...

...Microsoft basic data) Partition unique GUID: 7B6AD1F7-DA76-40F0-94C8-6196CCDD47E5 First sector: 2048 (at 1024.0 KiB) Last sector: 497663 (at 243.0 MiB) Partition size: 495616 sectors (242.0 MiB) Attribute flags: 0000000000000000 Partition name: 'primary' The UUID in the EFI boot options is 99E275E7-75A0-4B37-A2E6-C5385E600CB, which does not to match anything, but the system is only happy booting the old disk... > > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > https://lists.centos.org/mailman/listinfo/centos > >...

Robert Heller wrote: > At Tue, 29 May 2018 06:47:06 -0700 CentOS mailing list <centos at centos.org> > wrote: >> On 05/29/2018 06:33 AM, Robert Heller wrote: >> > >> >> The UUID in the EFI boot options is >> >> 99E275E7-75A0-4B37-A2E6-C5385E600CB, which >> >> does not to match anything, but the system is only happy booting the >> >> old disk... >> > And at this point, it will only boot in legacy mode off the old disk. >> >> That's what I meant, I think.'?'?...

At Tue, 29 May 2018 06:47:06 -0700 CentOS mailing list <centos at centos.org> wrote: > > On 05/29/2018 06:33 AM, Robert Heller wrote: > > > >> The UUID in the EFI boot options is 99E275E7-75A0-4B37-A2E6-C5385E600CB, which > >> does not to match anything, but the system is only happy booting the old > >> disk... > > And at this point, it will only boot in legacy mode off the old disk. > > That's what I meant, I think.?? Legacy mode is BIOS-compatibl...

...que GUID: 7B6AD1F7-DA76-40F0-94C8-6196CCDD47E5 > First sector: 2048 (at 1024.0 KiB) > Last sector: 497663 (at 243.0 MiB) > Partition size: 495616 sectors (242.0 MiB) > Attribute flags: 0000000000000000 > Partition name: 'primary' > > The UUID in the EFI boot options is 99E275E7-75A0-4B37-A2E6-C5385E600CB, which > does not to match anything, but the system is only happy booting the old > disk... And at this point, it will only boot in legacy mode off the old disk. I am considering making a boot ISO, either for a thumb drive or a DVD and booting the machine that...

At Mon, 28 May 2018 19:30:25 -0400 CentOS mailing list <centos at centos.org> wrote: > > On May 28, 2018, at 18:25, Robert Heller <heller at deepsoft.com> wrote: > > > I tried to run efibootmgr, but it wants a model named efivars loaded, but > > there is no such module available. > > Are you not running a CentOS kernel? That module should be available.