107 lines
4.8 KiB
HTML
107 lines
4.8 KiB
HTML
<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
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<link rel="stylesheet" href="style.css">
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<title>Verify and repair</title>
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</head>
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<body>
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<font size=5>How to verify and repair files</font><br><font size=1><br></font> 
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If there are lost or damaged files after verification, you can try to repair them.
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There are something to do, before repair and after failed repair.
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<hr>
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<h3>Way to start MultiPar after selecting a recovery file</h3>
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<p> 
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If you have set options in <a href="option1.htm">"System settings" page</a>,
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you can start MultiPar by selecting a recovery file.
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This way is easier than opening a recovery file by pushing "Open" button after you start MultiPar.
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Even when there are multiple recovery files of same set, you must select one of them.
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If you happen to select multiple recovery files,
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Create window may open, or multiple Verify windows will open.
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<dl><dt>
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When you have checked "Associate with ... files";
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</dt><dd> 
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If you right-click after selecting a recovery file over Windows Explorer, right-click menu appears.
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Then, you click "<b>Open with MultiPar</b>" on the menu.
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Or, you simply double-click the recovery file, which you want to open.
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</dd></dl>
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<dl><dt>
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When you have checked "Integrate MultiPar into Shell";
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</dt><dd> 
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If you right-click after selecting a recovery file over Windows Explorer, right-click menu appears.
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When you select "<b>MultiPar</b>" on the menu, sub-menu appears.
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Then, you click "<b>Verify Recovery Volume</b>" on the sub-menu.
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</dd></dl>
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<dl><dt>
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When you have checked "Create MultiPar icon on desktop";
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</dt><dd> 
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You select a recovery file and Drag & Drop it onto the MultiPar icon.
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</dd></dl>
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<dl><dt>
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When you have checked "Add MultiPar icon to [SendTo] menu";
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</dt><dd> 
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If you right-click after selecting a recovery file over Windows Explorer, right-click menu appears.
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When you select "<b>SendTo</b>" on the menu, sub-menu appears.
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Then, you click "<b>MultiPar</b>" on the sub-menu.
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</dd></dl>
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</p>
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<h3>Prepare to repair damaged files</h3>
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<p> 
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While you may verify written files on read-only media like CD-R or DVD-R,
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you cannot repair damaged files immediately.
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When you repair files, you need to copy those files on HDD.
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Even if they are damaged files or fragments of unknown filename,
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you should bring all source files and recovery files to a folder on HDD.
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To retrieve as many data as you can from the damaged media, you would better use "<b>File Salvager software</b>".
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There are many shareware and freeware for the purpose.
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Because "Data Recovery service" by a specialist company requires more money,
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it's the last way to restore important data.
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</p>
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<hr>
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<h3>If you cannot verify by incomplete PAR2 files</h3>
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<p> 
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When some vital packets are missing in a PAR2 file, it will be hard to verify or repair.
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But all kinds of packets may exist in multiple PAR2 files.
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Because MultiPar will search other PAR2 files of same base filename in the folder automatically,
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you should set same base filename for all PAR2 files of the same recovery set.
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(Base filename is a filename except extension and volume number.)
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When other PAR2 files are put in another folder, or are renamed to different base filename,
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you must add them manually by "Add" button.
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</p>
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<h3>If you cannot repair by a lack of available blocks</h3>
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<p> 
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Get more blocks as possible as you can.
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If there is a same source file on different location, you should copy it or add it by "Add" button.
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You need to find more blocks from the damaged media.
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If you cannot recognize fragments are pieces of which source file,
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you select "Additional verification" at "<a href="option3.htm#verification_level">Verification level</a>".
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If there are old files of modified version in a previous backup, it is worth to add them.
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</p>
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<p> 
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When a transported file had been damaged already, you cannot salvage lost data on your side.
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If there are other recovery files, you get them, too.
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If there is same file on another site, you may get it again.
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Or, you may ask someone to give another set of recovery files.
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</p>
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<h3>If you failed to repair, even when you have enough blocks</h3>
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<p> 
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Mostly this is caused by "exclusive file access" or "limited privilege".
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While a damaged file or recovered file is being accessed exclusively, it's impossible to replace them.
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An example is Anti-Virus scanner, and you may need to exclude working folder from real-time scan.
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When status of a damaged file became "<b>Locked</b>" after failed repair,
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the file is being used by another application.
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Of course, you cannot repair (modify) a system file, which is protected by OS.
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When repair was failed by a fault of PAR1/2 specifications,
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you may solve the problem by getting one more available block.
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</p>
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</body>
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</html>
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