Vbox, Applying Guest Additions

Hi guys,… Sorry if dumb question,…
Running Latest release of Truenas as a guest client within a Vbox client, on a Linux 24.04.4 ubuntu desktop Host.
I have been running Vbox for many yrs, so well used to updating ‘guest additions’ when host version updates,… and applying to clients etc,…
So have tried to apply guest additions to TrueNAS Vbox client,. have tried several options within cmd window,… but all fail with messages about insufficient privilages. have even tried as sudo,…
But this also fails, and I am concerned I will break something within truenas, as these are the things that devs. are trying to control and prevent updates etc and ultimately break truenas.
Can someone pls offer a solution that meets truenas requirements, and doesn’t break the core code.
Many Tx

Really, the solution is “don’t run it under Virtualbox.” I mean, if you just want to play around with it, or test out some UI things, fine (though in those cases the guest additions would hardly be useful), but Virtualbox just isn’t a suitable platform to run TrueNAS in production on. ESXi’s the gold standard, and there’s now a decent experience base with Proxmox; I’m not sure about Xen-based hypervisors (including xcp-ng).

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Indeed, Thankyou for your replay… I did run TrueNAS in Vbox for a while, as much to get a bit of experience under my belt.
And Yes TrueNAS did run very nicely with 4 x M.2 drives, and a simple 128gig SSD drive,… For a while…
I noticed an error,… on one of the drives, after a week or so… Although the storage worked,… things were not looking good, thinking a reboot might fix it, I duly rebooted,… at which point two drives in the array failed,… game over!.
So looking forward as they say,… I still have some questions,… I have researched h/w and come up with the following,…
MoBo
ASUS TUF GAMING B550M-PLUS WiFi II, AMD B550, AM4, DDR4, PCIe 4.0, SATA3, Dual M.2, USB 3.2 Gen2 A+C, mATX]
Paired with the following
Processor
AMD Ryzen™ 7 5700X, AM4, Zen 3, 8 Core, 16 Thread, 3.4GHz, 4.6GHz Turbo, 36MB Cache, PCIe 4.0, 65W, CPU

As I do not intend to use a graphics card I can use the

ASUS M.2 x 4 card,…
In the primary PCIe slot. and see all 4 m.2 drives with bifurication enabled.

And My plan is to use an HBA SATA card in the end slot,… is This OK,… will it work as I expect and give me the 8 extra SATA ports I hope For…???

I look to the learned contributors to comment on my selection…
Unless someone has a tested working solution addressing my requirements of cheap 4 x m.2 daugther board,… and an 8 x HBA SATA board…
As I feel the number of options and permutations seems almost endless…
Many tx