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Re: virtualisation

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On 5/23/23 03:33, mick.crane wrote:
> On 2023-05-22 23:18, David Christensen wrote:
>> On 5/22/23 11:43, mick.crane wrote:
>>> This is a request for best practice, perceived knowledge.
>>> For one reason and another this PC/Workstation (what is the difference?)
>>> boots in legacy mode. It was something to do with the SS usb port not 
>>> booting the installer in EFI mode.
>>> I forget exactly.
>>> Anyway, it's a niggle that it is legacy mode and changing a working 
>>> system seems a palaver.
>>> As I have the /home stuff all being/copied onto another disk I 
>>> thought I'd reinstall and try to get it tidy.
>>
>>
>> Why do you think legacy mode is untidy?
>>
> I had previously installed Ubuntu on this disk,
> after installing Bookworm the Ubuntu EFI option in the BIOS was still 
> there.
> I removed it in the BIOS menu. 


https://en.wikipedia.org/wiki/Nonvolatile_BIOS_memory

https://en.wikipedia.org/wiki/UEFI#Booting


Removing obsolete UEFI NVRAM boot table entries is good housekeeping.


> There was some message in the boot screen 
> in legacy mode
> "Alternate (partition?) corrupted using primary" or something.
> It doesn't seem to have stopped anything working.


https://en.wikipedia.org/wiki/GUID_Partition_Table


Did you zero your drive prior to installing Debian?  Perhaps there is a 
leftover GPT secondary partition table on disk.  See below.


> root@pumpkin:~# fdisk -l /dev/sda
> Disk /dev/sda: 223.57 GiB, 240057409536 bytes, 468862128 sectors
> Disk model: KINGSTON SA400S3
> Units: sectors of 1 * 512 = 512 bytes
> Sector size (logical/physical): 512 bytes / 512 bytes
> I/O size (minimum/optimal): 512 bytes / 512 bytes
> Disklabel type: dos
> Disk identifier: 0x7899140a
> 
> Device     Boot     Start       End   Sectors   Size Id Type
> /dev/sda1  *         2048 466862079 466860032 222.6G 83 Linux
> /dev/sda2       466864126 468860927   1996802   975M  5 Extended
> /dev/sda5       466864128 468860927   1996800   975M 82 Linux swap / 
> Solaris
> root@pumpkin:~#
> 
> boot is in /
> Is sda2 something to do with EFI?


https://en.wikipedia.org/wiki/Master_boot_record

https://en.wikipedia.org/wiki/Extended_partition


sda1 is an MBR primary partition.

sda2 is an MBR extended partition.

sda5 is a partition within sda2.


Your disk has 468862128 sectors.  A GPT secondary partition table should 
start 33 sectors before the end of the disk:

468862128 - 33 = 468862095

Run the following command to see if there is a GPT secondary partition 
table on your disk:

# dd bs=512 count=33 if=/dev/sda skip=468862095 | hexdump -C


>>> I thought to try this virtualisation.
>>
>> Why?
> 
> I thought maybe I could run a Windows program in a window on Debian 
> desktop.


You have several choices:

https://wiki.debian.org/RunningWindowsPrograms


That said, running Windows directly on hardware is the KISS solution and 
should provide the best usage experience.  Prices on used computers are 
very good right now.


David

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Thread

virtualisation "mick.crane" <mick.crane@gmail.com> - 2023-05-22 20:50 +0200
  Re: virtualisation Dan Ritter <dsr@randomstring.org> - 2023-05-22 21:30 +0200
    Re: virtualisation Mark Allums <maa@allums.com> - 2023-05-22 21:40 +0200
      Re: virtualisation "Andrew M.A. Cater" <amacater@einval.com> - 2023-05-22 21:50 +0200
    Re: virtualisation Dan Ritter <dsr@randomstring.org> - 2023-05-22 22:40 +0200
  Re: virtualisation David Christensen <dpchrist@holgerdanske.com> - 2023-05-23 00:20 +0200
    Re: virtualisation Charles Curley <charlescurley@charlescurley.com> - 2023-05-23 15:10 +0200
    Re: virtualisation David Christensen <dpchrist@holgerdanske.com> - 2023-05-24 00:10 +0200
      Re: virtualisation David Christensen <dpchrist@holgerdanske.com> - 2023-05-24 10:40 +0200
        Re: virtualisation David Christensen <dpchrist@holgerdanske.com> - 2023-05-24 20:50 +0200
      Re: virtualisation Michael <ml@hemathor.de> - 2023-05-26 10:20 +0200
        GPT backup table, was Re: virtualisation "Thomas Schmitt" <scdbackup@gmx.net> - 2023-05-26 11:50 +0200
          Re: GPT backup table, was Re: virtualisation David Christensen <dpchrist@holgerdanske.com> - 2023-05-26 12:50 +0200
          Re: GPT backup table, was Re: virtualisation Michael <ml@hemathor.de> - 2023-05-27 11:40 +0200
            Re: GPT backup table, was Re: virtualisation Dan Ritter <dsr@randomstring.org> - 2023-05-27 17:50 +0200
            Re: GPT backup table, was Re: virtualisation David Christensen <dpchrist@holgerdanske.com> - 2023-05-28 05:20 +0200
          Re: GPT backup table, was Re: virtualisation zithro <slack@rabbit.lu> - 2023-05-27 19:20 +0200
            Re: GPT backup table, was Re: virtualisation Stefan Monnier <monnier@iro.umontreal.ca> - 2023-05-27 20:00 +0200
        Re: virtualisation David Christensen <dpchrist@holgerdanske.com> - 2023-05-26 12:40 +0200
    Re: virtualisation Max Nikulin <manikulin@gmail.com> - 2023-05-25 18:30 +0200

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