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EnglishRescatux vs. Super Grub2 Disk: Which One Should You Download?
Updated
Choose Super Grub2 Disk when your system and data are intact but the boot process is broken and you need to get back into an installed OS. Choose Rescatux when you need a broader rescue environment that can also repair GRUB/GRUB2, check and fix filesystems, clear a Windows password, change a GNU/Linux password, or regenerate the sudoers file. Both come from supergrubdisk.org, and both can be written to a CD-ROM or USB stick.
The core difference in one table
| Dimension | Super Grub2 Disk | Rescatux |
|---|---|---|
| Primary job | Boot into systems that normal means cannot boot | Full rescue and repair environment |
| Stated size | ~20.00 MB | ~672 MB |
| GRUB / GRUB2 | Helps you fix your GRUB or GRUB2 | Fixes GRUB / GRUB2 |
| Filesystem tools | Not listed | Check and fix filesystems |
| Password tasks | Not listed | Clear Windows password; change GNU/Linux password |
| Other repair tasks | Not listed | Regenerate sudoers file, many UEFI boot options, and more |
| Boot media | CD-ROM or USB | CD-ROM or USB |
| Guided workflows | Not listed | Wizards, including Restore Grub and a Clear Windows Password howto |
The size gap is the quickest signal: Super Grub2 Disk is a small boot-focused image, while Rescatux is a larger toolkit that carries repair utilities.
What Super Grub2 Disk actually does
Super Grub2 Disk is described as a live CD that helps you boot into most any operating system even if you cannot boot into it by normal means. It boots into many systems and GRUB2 ones, and it loads GRUB legacy configurations (menu.lst). Optional LVM / RAID support is listed.
The current stable release noted on the site, Super Grub2 Disk 2.06s4, adds many translations and features such as BTRFS support, booting Linux from a /boot partition, partition labels, and support for booting GNU/Hurd and ReactOS. It also lists operating-system-specific options for EFI, FreeBSD, FreeDOS, Linux, Mac OS X, MSDOS, Windows 98, Windows NT, and Windows Vista (and newer). Debian and Ubuntu secureboot binaries were updated so they work on updated or recent UEFIs.
Use it when: the machine powers on, the OS is still installed, but the bootloader no longer takes you to it. Super Grub2 Disk gets you booted so you can then repair the bootloader from inside the system.
What Rescatux actually does
Rescatux is the larger rescue environment. Its listed capabilities include fixing GRUB / GRUB2, handling many UEFI boot options, checking and fixing filesystems, clearing a Windows password, changing a GNU/Linux password, regenerating the sudoers file, and more. It ships with wizards, including Restore Grub, plus howtos such as clearing a Windows password.
Use it when: the problem is not only "cannot boot" but also "cannot log in," "the filesystem looks damaged," or "sudo is broken." Rescatux covers those repair jobs in one session.
Where they overlap, and how to split the work
Both tools address GRUB/GRUB2 problems, so the overlap is real. The practical split is by scope:
- Boot-only problem: start with Super Grub2 Disk. It is small, fast to write to media, and its single purpose is getting an installed system to boot.
- Boot problem plus system repair: go straight to Rescatux. Its GRUB fixing sits alongside filesystem checks, password resets, and sudoers regeneration, so you avoid switching media mid-repair.
- Unsure how bad it is: boot Super Grub2 Disk first. If you get in and the fix is a bootloader reinstall, you are done. If you find deeper damage, move to Rescatux.
A concrete example: a laptop shows a GRUB prompt instead of the boot menu, but the Linux install is otherwise healthy. Super Grub2 Disk is the lean choice to reach the system. If the same laptop also refuses your user password and reports filesystem errors, Rescatux is the better single download because it lists all three repair areas.
Before you download: conditions to check
- Media: both are documented for CD-ROM or USB. Confirm your machine can boot from the media type you plan to use.
- Firmware mode: the site lists UEFI-related fixes and EFI boot options, and documents booting Super Grub2 Disk (EFI) from the Windows Boot Manager when booted in UEFI mode. Match the tool's boot mode to your firmware.
- Special storage: LVM / RAID support is listed as optional for Super Grub2 Disk, so verify your setup is covered before relying on it.
- Licensing and cost: the site distinguishes a stable Rescatux download from a non-free Rescatux and includes a "Buy Rescatux" page. Check the download page for which edition you are getting rather than assuming either is free.
- Size budget: ~20 MB versus ~672 MB matters if you are writing to a small USB stick or downloading over a slow connection.
Bottom line
Download Super Grub2 Disk for a focused, ~20 MB boot-recovery tool. Download Rescatux when you want a ~672 MB rescue environment that also fixes GRUB/GRUB2, checks filesystems, resets Windows and GNU/Linux passwords, and regenerates sudoers. If you are diagnosing an unknown failure, try the small tool first and escalate to Rescatux only if the repair needs more than booting.