Tootfinder

The increasing prevalence of EFI firmware that sees no partition table and so helpfully creates one, corrupting whatever was already on the disk, means that it's a bad idea to use whole disks (as RAID members, for example).
And of course if you do recover, it does it again at next boot,
https://marc.in…

On Windows, you need this if you are short on time and flash drives to use Clonezilla, and you are ready to nuke every single internet search engine because they are leading you only to sponsored or SEOed crap:
Hasleo Disk Clone / Disk Clone Free
Clones system drives, too. After that, you might need to use diskpart to delete and recreate your Recovery partition if you are migrating to a bigger SSD, but that's about it ->

Pro tip, kids: keep a record of your partition tables and whatnots just in case Linux decides it can't be arsed remembering them and you're suddenly left with a 4TB disk that had 4 partitions on but nothing seems able to figure out where they were and now you're going to have run file recovery and sob.

I’m installing #Linux for someone.
When I (try to) boot it, the computer (old dell laptop) says “Operation System Not Found”.
However, GRUB is installed: if I add in a #openSUSE USB and select “boot from hard disk” the installed grub opens and I can boot the system normally!! I need the pendrive only to select “boot from hard drive” - then it opens the installed grub and I can just remove the pendrive and boot.
It only isn’t opening Grub automatically apparently? Tho the BIOS doesn’t let me select a specific partition, only “hard drive”.
Legacy BIOS, MBR.
It’s a Dell XPS L511Z
Any ideas?
Relevant: Fedora installer wasn’t detecting any disks. So we installed openSUSE dual boot with windows (it worked, the only problem was grub didn’t detect windows). They wanted to try deleting the disk to see if fedora would detect it. Opening Gparted, apparently it was a RAID (even tho only 1 disk). Someone else deleted the disk (new partition table).
From then on, any distro we installed had the problem I mentioned.

Incorporation of the intensive and extensive entropy contributions in the disk intersection theory of a hard disk system
V. M. Pergamenshchik
https://arxiv.org/abs/2404.12506

Incorporation of the intensive and extensive entropy contributions in the disk intersection theory of a hard disk system
The one-body free volume, which determines the entropy of a hard disk system, has extensive (cavity) and intensive (cell) contributions. So far these contributions have not been unified and considered separately. The presented theory incorporates both contributions, and their sum is shown to determine the free volume and partition function. The approach is based on multiple intersections of the circles concentric with the disks but of twice larger radius. The result is exact formulae for the ex…

This https://arxiv.org/abs/2311.05574 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

A near-optimal zero-free disk for the Ising model
The partition function of the Ising model of a graph $G=(V,E)$ is defined as $Z_{\text{Ising}}(G;b)=\sum_{σ:V\to \{0,1\}} b^{m(σ)}$, where $m(σ)$ denotes the number of edges $e=\{u,v\}$ such that $σ(u)=σ(v)$. We show that for any positive integer $Δ$ and any graph $G$ of maximum degree at most $Δ$, $Z_{\text{Ising}}(G;b)\neq 0$ for all $b\in \mathbb{C}$ satisfying $|\frac{b-1}{b+1}| \leq \frac{1-o_Δ(1)}{Δ-1}$ (where $o_Δ(1) \to 0$ as $Δ\to \infty$). This is optimal in the s…

This https://arxiv.org/abs/2401.15467 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hep…

Fermions, quantum gravity and holography in two dimensions
We study a model comprising $N$ flavors of Kähler Dirac fermion propagating on a triangulated two dimensional disk which is constrained to have a negative average bulk curvature. Dirichlet boundary conditions are chosen for the fermions. Quantum fluctuations of the geometry are included by summing over all possible triangulations consistent with these constraints. We show in the limit $N\to \infty$ that the partition function is dominated by a regular triangulation of two dimensional hyperboli…

I’m going deeper and deeper with my self-hosting. Today I plan to:
- install new 1TB SSDK as LVM mount in RAID1 setup
- encrypt it via LUKS with pass stored in a network place (so when someone steals my entire PC I can remove the key remotely)
- copy all the stuff to that new disk
- attach the current 1TB to that LVM partition as a mirror RAID1
- feel safe

My /home hdd partition got trashed and I need to get a new hard disk to transfer any files I can recover from it. I hope that not too much was lost. :/

Incorporation of the intensive and extensive entropy contributions in the disk intersection theory of a hard disk system
V. M. Pergamenshchik
https://arxiv.org/abs/2404.12506

Incorporation of the intensive and extensive entropy contributions in the disk intersection theory of a hard disk system
The one-body free volume, which determines the entropy of a hard disk system, has extensive (cavity) and intensive (cell) contributions. So far these contributions have not been unified and considered separately. The presented theory incorporates both contributions, and their sum is shown to determine the free volume and partition function. The approach is based on multiple intersections of the circles concentric with the disks but of twice larger radius. The result is exact formulae for the ex…

My /home hdd partition got trashed and I need to get a new hard disk to transfer any files I can recover from it. I hope that not too much was lost. :/

This https://arxiv.org/abs/2307.05995 has been replaced.
initial toot: https://mastoxiv.page/@arX…

Canonical partition function and distance dependent correlation functions of a quasi-one-dimensional system of hard disks
The canonical $\,NLT\,$ partition function of a quasi-one dimensional (q1D) one-file system of equal hard disks [J. Chem Phys. \textbf{153}, 144111 (2020)] provides an analytical description of the thermodynamics and ordering in this system (a pore) as a function of linear density $\,Nd/L\,$ where $\,d\,$ is the disk diameter. We derive the analytical formulae for the distance dependence of the translational pair distribution function and the distribution function of distances between next neig…