wiki: add 4 new articles from archive, merge 8 archive notes into existing articles (73 articles)

New: mdadm RAID rebuild, Mastodon instance tuning, Ventoy, Fedora networking/kernel recovery.
Merged: Glacier Deep Archive into rsync, SpamAssassin into hardening checklist,
OBS captions/VLC capture into OBS setup, yt-dlp subtitles/temp fix into yt-dlp.
Updated index.md, README.md, SUMMARY.md with 21 previously missing articles.
Fixed merge conflict in index.md Recently Updated table.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

03-opensource/dev-tools/ventoy.md

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+---
+title: "Ventoy — Multi-Boot USB Tool"
+domain: opensource
+category: dev-tools
+tags: [ventoy, usb, boot, iso, linux, tools]
+status: published
+created: 2026-04-02
+updated: 2026-04-02
+---
+
+# Ventoy — Multi-Boot USB Tool
+
+Ventoy turns a USB drive into a multi-boot device. Drop ISO files onto the drive and boot directly from them — no need to flash a new image every time you want to try a different distro or run a recovery tool.
+
+## What It Is
+
+[Ventoy](https://www.ventoy.net/) creates a special partition layout on a USB drive. After the one-time install, you just copy ISO (or WIM, VHD, IMG) files to the drive. On boot, Ventoy presents a menu of every image on the drive and boots whichever one you pick.
+
+No re-formatting. No Rufus. No balenaEtcher. Just drag and drop.
+
+## Installation
+
+### Linux
+
+```bash
+# Download the latest release
+wget https://github.com/ventoy/Ventoy/releases/download/v1.1.05/ventoy-1.1.05-linux.tar.gz
+
+# Extract
+tar -xzf ventoy-1.1.05-linux.tar.gz
+cd ventoy-1.1.05
+
+# Install to USB drive (WARNING: this formats the drive)
+sudo ./Ventoy2Disk.sh -i /dev/sdX
+```
+
+Replace `/dev/sdX` with your USB drive. Use `lsblk` to identify it — triple-check before running, this wipes the drive.
+
+### Windows
+
+Download the Windows package from the Ventoy releases page, run `Ventoy2Disk.exe`, select your USB drive, and click Install.
+
+## Usage
+
+After installation, the USB drive shows up as a regular FAT32/exFAT partition. Copy ISOs onto it:
+
+```bash
+# Copy ISOs to the drive
+cp ~/Downloads/Fedora-43-x86_64.iso /mnt/ventoy/
+cp ~/Downloads/ubuntu-24.04-desktop.iso /mnt/ventoy/
+cp ~/Downloads/memtest86.iso /mnt/ventoy/
+```
+
+Boot from the USB. Ventoy's menu lists every ISO it finds. Select one and it boots directly.
+
+## Updating Ventoy
+
+When a new version comes out, update without losing your ISOs:
+
+```bash
+# Update mode (-u) preserves existing files
+sudo ./Ventoy2Disk.sh -u /dev/sdX
+```
+
+## Why It's Useful
+
+- **Distro testing:** Keep 5-10 distro ISOs on one stick. Boot into any of them without reflashing.
+- **Recovery toolkit:** Carry GParted, Clonezilla, memtest86, and a live Linux on a single drive.
+- **OS installation:** One USB for every machine you need to set up.
+- **Persistence:** Ventoy supports persistent storage for some distros, so live sessions can save data across reboots.
+
+## Gotchas & Notes
+
+- **Secure Boot:** Ventoy supports Secure Boot but it requires enrolling a key on first boot. Follow the on-screen prompts.
+- **exFAT for large ISOs:** The default FAT32 partition has a 4GB file size limit. Use exFAT if any of your ISOs exceed that (Windows ISOs often do). Ventoy supports both.
+- **UEFI vs Legacy:** Ventoy handles both automatically. It detects the boot mode and presents the appropriate menu.
+- **Some ISOs don't work.** Heavily customized or non-standard ISOs may fail to boot. Standard distro ISOs and common tools work reliably.
+
+## See Also
+
+- [[linux-distro-guide-beginners]]