The source must already be a completely valid GameCube card. SaveEditor selects the active BAT using the documented signed update-counter rule, copies that valid BAT only over the inactive BAT block, advances the rebuilt copy counter, recalculates only that BAT checksum pair, and authorizes a new card copy only when the strict filesystem parser reopens the result.
Emulator & Retro Tools
GameCube BAT Redundancy Rebuild
Refresh the inactive valid GameCube BAT mirror from the parser-selected active BAT copy, incrementing only the rebuilt copy counter and checksum before strict reopen.
01 / Tool workbench
Use the runtime only when it is actually ready.
The application shell fails closed. An input interface is not enabled merely because a WordPress Tool record exists; the declared engine must be registered in the current build.
Session change summary
No output has been built in this session.
02 / Compatibility
Know the supported input before opening a file.
Compatibility fields are intentionally explicit. Missing values stay unclaimed rather than being filled with generic assumptions.
Accepted extensions
.raw.gcp.bin.mem.mcd
Platforms
GameCube
Supported versions / editions
Raw/Dolphin-compatible GameCube memory-card images already accepted by the strict Phase 46 parser.
Input constraints
Exact supported raw GameCube card; valid header; all four directory/BAT metadata blocks valid; strict filesystem parse succeeds; active/inactive BAT blocks differ; active signed BAT update counter must not be 32767; only the inactive 8 KiB BAT block may change.
Known limitations
No corrupt-BAT reconstruction, no directory rewrite, no allocation synthesis, no orphan/chain repair, no payload edit, no counter rollover guess, and no write outside the inactive BAT block.
Output / result
A new full-card copy with only the inactive BAT block rebuilt from the validated active BAT, assigned the next safe update counter and matching checksum pair.
03 / Instructions
Use a reversible workflow.
File-oriented workflows start with an untouched original. Tool-specific instructions add only details documented for this utility.
- 01Keep the original
Preserve an untouched copy before creating or transforming binary output.
- 02Confirm scope
Match the file size, format, platform, and version to the support information on this page.
- 03Process locally
Use the runtime only when the page reports that its declared engine is loaded.
- 04Validate output
Compare or test the result before replacing any working source file.
Tool-specific steps
Use only on an already-valid card with divergent BAT mirrors. Keep the original. SaveEditor refuses the operation unless the source and reconstructed result both pass strict filesystem validation.
04 / Privacy and processing
The processing mode is part of the product contract.
SaveEditor.com should state local processing only when the implementation truly keeps file contents in the browser. Server or hybrid processing must be disclosed just as clearly.
Declared mode
Browser local
Runtime state
Operational
Tool-specific privacy notes
Phase 52 reads only the explicitly selected local file in the browser. The nintendo-recovery-v1 runtime contains no fetch, XMLHttpRequest, WebSocket, sendBeacon, form upload, server-side save processing, or telemetry path. The permanent 16 MiB per-file ceiling remains in force and the selected source is never modified.
05 / Troubleshooting
When a file is rejected, do not force it.
A rejection can indicate an unsupported size, format, version, platform, or byte sequence. Preserve the original and correct the input instead of bypassing validation.
Re-check the documented input type and browser size limit before retrying.
A generic converter does not imply support for every game-specific container, signing scheme, or serialization format.
Return to the untouched source instead of repeatedly processing a damaged or partially transformed file.
Known Tool issues
If either BAT is invalid, use the existing single-defect Phase 47 rule where applicable. Identical BAT copies or signed-counter rollover produce no Phase 52 output.
06 / Verification
Support claims should be traceable.
The verification date, method notes, and public references are kept separate from marketing language so compatibility can be reviewed over time.
Last verified2026-08-10
Profilegamecube-bat-redundancy-rebuild
Method notes
Verified with valid divergent BAT fixtures, exact signed active-copy selection, free-count preservation, identical-copy/rollover refusal, strict source/reopen checks, target-only byte-scope assertions, checksum reconstruction, independent Python reproduction, and full regression/source-package parity.
Public references
07 / FAQ
Questions to answer before editing.
These answers are generated from the Tool record and current runtime state rather than generic compatibility promises.
Is GameCube BAT Redundancy Rebuild ready to use?
The Tool record is verified and declares an operational runtime. The page enables its input controls only when the declared engine module is loaded in the current build.
Does processing stay in the browser?
Yes for this declared mode. The loaded runtime processes the explicit input in the browser; Tool-specific privacy notes describe the exact scope and limits.
Should I keep the original file?
Yes. Keep an untouched source file until any generated output has been validated.
What if my input is rejected?
Use the validation message to correct the base, encoding, width, timezone, byte alignment, or size. The runtime does not guess through invalid input.
Related tools
Continue with the same tool family.
Only index-ready verified records from the same Tool Family are shown here.
Related guides
Read the guidance connected to this tool.
Only reviewed, index-ready Guides that explicitly reference this Tool are included.
Beginner
Backups & Safety
GameCube Memory Card Image Backup & Identification Guide
A safety-first GameCube Memory Card Image guide for identifying the intended representation, preserving an untouched source copy, and choosing only a verified compatible Tool.
Beginner
Save File Formats
GameCube Memory Card Image Integrity & Troubleshooting Guide
A fail-closed GameCube Memory Card Image troubleshooting guide for distinguishing representation problems from unsupported semantics and for selecting read-only integrity checks before any repair attempt.