{"id":26597,"date":"2026-10-15T12:32:13","date_gmt":"2026-10-15T12:32:13","guid":{"rendered":"https:\/\/windowsreport.com\/fr\/?p=26597"},"modified":"2026-10-15T12:50:11","modified_gmt":"2026-10-15T12:50:11","slug":"comment-corriger-lerreur-cannot-find-os-partitions-for-disk-0","status":"publish","type":"post","link":"https:\/\/windowsreport.com\/fr\/comment-corriger-lerreur-cannot-find-os-partitions-for-disk-0\/","title":{"rendered":"Comment corriger l\u2019erreur \u00ab Cannot Find OS Partition(s) for Disk 0 \u00bb"},"content":{"rendered":"\n

L\u2019erreur \u00ab Cannot find OS partition(s) for disk 0 \u00bb appara\u00eet g\u00e9n\u00e9ralement lorsque MBR2GPT ne parvient pas \u00e0 localiser votre installation Windows ou ses fichiers de configuration de d\u00e9marrage. Cela se produit souvent lors de la conversion d\u2019un disque de MBR vers GPT, mais vous pouvez souvent la r\u00e9soudre sans r\u00e9installer Windows.<\/p>\n\n\n\n

Avant d\u2019essayer ces solutions, sauvegardez vos fichiers importants. Les modifications apport\u00e9es aux partitions de d\u00e9marrage peuvent emp\u00eacher Windows de d\u00e9marrer si vous s\u00e9lectionnez le mauvais disque.<\/p>\n\n\n\n

Comment corriger l\u2019erreur \u00ab Cannot Find OS Partition(s) for Disk 0 \u00bb ?<\/h2>\n\n\n\n

1. V\u00e9rifier si Windows est install\u00e9 sur le Disque 0<\/h3>\n\n\n\n

MBR2GPT peut rechercher le mauvais disque, en particulier lorsque votre ordinateur poss\u00e8de plusieurs SSD ou disques durs.<\/p>\n\n\n\n

Pour identifier le bon disque Windows :<\/p>\n\n\n\n

    \n
  1. Appuyez sur Windows + X<\/strong> et s\u00e9lectionnez Gestion des disques<\/strong>.
    \"Gestion<\/li>\n\n\n\n
  2. Localisez la partition contenant Windows, g\u00e9n\u00e9ralement le lecteur C:.<\/li>\n\n\n\n
  3. V\u00e9rifiez quel disque physique contient cette partition, par exemple Disque 0 ou Disque 1.<\/li>\n\n\n\n
  4. Ouvrez l\u2019Invite de commandes en tant qu\u2019administrateur<\/strong>.
    \"Invite<\/li>\n\n\n\n
  5. Ex\u00e9cutez diskpart<\/strong>, puis list disk<\/strong>, pour confirmer les num\u00e9ros de disque.<\/li>\n\n\n\n
  6. Tapez exit<\/strong> pour fermer DiskPart.<\/li>\n<\/ol>\n\n\n\n

    Si Windows r\u00e9side sur le Disque 1, ex\u00e9cutez cette commande :<\/p>\n\n\n\n

    mbr2gpt \/validate \/disk:1 \/allowFullOS<\/code><\/pre>\n\n\n\n
    Si Windows r\u00e9side sur le Disque 0, utilisez :<\/p>\n\n\n\n
    mbr2gpt \/validate \/disk:0 \/allowFullOS<\/code><\/pre>\n\n\n\n
    Remplacez le num\u00e9ro de disque par celui qui contient votre installation Windows. Le param\u00e8tre \/allowFullOS permet \u00e0 MBR2GPT de s\u2019ex\u00e9cuter depuis votre installation Windows existante plut\u00f4t que depuis l\u2019environnement de r\u00e9cup\u00e9ration Windows.<\/p>\n\n\n\n
    2. Reconstruire les fichiers de configuration de d\u00e9marrage de Windows<\/h3>\n\n\n\n
    Des donn\u00e9es de configuration de d\u00e9marrage (BCD) endommag\u00e9es ou manquantes peuvent emp\u00eacher MBR2GPT d\u2019identifier la partition du syst\u00e8me d\u2019exploitation.<\/p>\n\n\n\n
    Suivez ces \u00e9tapes si vous utilisez une installation BIOS\/MBR h\u00e9rit\u00e9e et que vous pr\u00e9voyez de d\u00e9marrer \u00e0 partir de la partition Windows elle-m\u00eame :<\/p>\n\n\n\n
      \n
    1. Ouvrez l\u2019Invite de commandes en tant qu\u2019administrateur<\/strong>.<\/li>\n\n\n\n
    2. Saisissez la commande suivante :
      bcdboot C:Windows \/s C: \/f BIOS<\/code><\/pre><\/li>\n\n\n\n
    3. Attendez que le message Boot files successfully created<\/strong> s\u2019affiche.<\/li>\n\n\n\n
    4. Red\u00e9marrez votre ordinateur apr\u00e8s avoir confirm\u00e9 que la partition de d\u00e9marrage appropri\u00e9e est active.<\/li>\n\n\n\n
    5. Ex\u00e9cutez \u00e0 nouveau la commande de validation MBR2GPT.<\/li>\n<\/ol>\n\n\n\n
      Cette commande recr\u00e9e les fichiers de d\u00e9marrage BIOS \u00e0 l\u2019aide de l\u2019installation Windows sur C:.<\/p>\n\n\n\n
      Si votre syst\u00e8me utilise une partition distincte r\u00e9serv\u00e9e au syst\u00e8me sur le m\u00eame disque, vous devez plut\u00f4t r\u00e9parer cette partition. Attribuez-lui une lettre de lecteur temporaire, telle que S:, puis ex\u00e9cutez la commande suivante :<\/p>\n\n\n\n
      bcdboot C:Windows \/s S: \/f BIOS<\/code><\/pre>\n\n\n\n
      Ne modifiez pas la partition active tant que vous n\u2019avez pas confirm\u00e9 o\u00f9 Windows stocke ses fichiers de d\u00e9marrage. Des modifications incorrectes peuvent emp\u00eacher l\u2019ordinateur de d\u00e9marrer.<\/p>\n\n\n\n
      3. V\u00e9rifier que la partition de d\u00e9marrage de Windows se trouve sur le bon disque<\/h3>\n\n\n\n
      Parfois, Windows est install\u00e9 sur le Disque 0 alors que la partition r\u00e9serv\u00e9e au syst\u00e8me contenant les fichiers de d\u00e9marrage se trouve sur le Disque 1.<\/p>\n\n\n\n
      Pour inspecter la configuration :<\/p>\n\n
        \n
      1. Ouvrez l\u2019Invite de commandes en tant qu\u2019administrateur<\/strong>.<\/li>\n\n\n\n
      2. Ex\u00e9cutez bcdedit<\/strong> pour afficher la configuration de d\u00e9marrage actuelle.<\/li>\n\n\n\n
      3. V\u00e9rifiez les entr\u00e9es device<\/strong> et osdevice<\/strong> sous la section Chargeur de d\u00e9marrage Windows.<\/li>\n\n\n\n
      4. Ouvrez Gestion des disques<\/strong> et rep\u00e9rez les partitions marqu\u00e9es Syst\u00e8me, D\u00e9marrage et Actif.<\/li>\n\n\n\n
      5. D\u00e9terminez si Windows et la partition de d\u00e9marrage R\u00e9serv\u00e9 au syst\u00e8me se trouvent sur des disques physiques diff\u00e9rents.<\/li>\n<\/ol>\n\n\n\n
        Si les fichiers de d\u00e9marrage se trouvent sur un autre disque, vous devrez peut-\u00eatre les recr\u00e9er sur le disque Windows \u00e0 l\u2019aide de BCDBoot, marquer la partition syst\u00e8me MBR appropri\u00e9e comme active et ajuster l\u2019ordre de d\u00e9marrage du BIOS.<\/p>\n\n\n\n
        Ne marquez une partition comme active qu\u2019apr\u00e8s y avoir install\u00e9 correctement les fichiers de d\u00e9marrage n\u00e9cessaires. Testez si Windows d\u00e9marre \u00e0 partir du disque pr\u00e9vu avant de tenter la conversion GPT.<\/p>\n\n\n\n
        4. V\u00e9rifier la disposition des partitions du disque<\/h3>\n\n\n\n
        MBR2GPT n\u00e9cessite une disposition de partitions compatible avant de pouvoir convertir un disque. M\u00eame apr\u00e8s avoir r\u00e9par\u00e9 la configuration de d\u00e9marrage, des partitions incorrectes peuvent emp\u00eacher la validation.<\/p>\n\n\n\n
        Pour inspecter le disque :<\/p>\n\n\n\n
          \n
        1. Ouvrez l\u2019Invite de commandes en tant qu\u2019administrateur<\/strong>.<\/li>\n\n\n\n
        2. Tapez diskpart<\/strong> et appuyez sur Entr\u00e9e.
          \"\"<\/li>\n\n\n\n
        3. Ex\u00e9cutez select disk 0<\/strong>, en rempla\u00e7ant 0 par le num\u00e9ro de votre disque Windows.<\/li>\n\n\n\n
        4. Tapez list partition<\/strong> pour afficher les partitions existantes.<\/li>\n\n\n\n
        5. V\u00e9rifiez si le disque contient plus de trois partitions principales ou des partitions \u00e9tendues ou logiques.<\/li>\n\n\n\n
        6. Tapez exit<\/strong> lorsque vous avez termin\u00e9.<\/li>\n<\/ol>\n\n\n\n
          Selon les exigences de Microsoft pour MBR2GPT, le disque cible doit \u00eatre au format MBR, contenir au maximum trois partitions principales et disposer d\u2019une partition syst\u00e8me active valide avec une entr\u00e9e BCD pointant vers Windows.<\/p>\n\n\n\n
          Si le disque pr\u00e9sente une disposition de partitions non prise en charge, vous devez r\u00e9soudre ce probl\u00e8me avant la conversion.<\/p>\n\n\n\n
          5. V\u00e9rifier les journaux d\u2019erreurs de MBR2GPT<\/h3>\n\n\n\n
          Si les correctifs pr\u00e9c\u00e9dents ne r\u00e9solvent pas l\u2019erreur, les journaux de MBR2GPT peuvent aider \u00e0 identifier le probl\u00e8me sous-jacent.<\/p>\n\n\n\n
            \n
          1. Ouvrez l\u2019Invite de commandes en tant qu\u2019administrateur<\/strong>.<\/li>\n\n\n\n
          2. Ex\u00e9cutez mbr2gpt \/validate \/disk:0 \/allowFullOS<\/strong> avec le num\u00e9ro de disque correct.<\/li>\n\n\n\n
          3. Ouvrez l\u2019Explorateur de fichiers et acc\u00e9dez \u00e0 C:Windows<\/strong>.<\/li>\n\n\n\n
          4. Recherchez setupact.log<\/strong> et setuperr.log<\/strong>.<\/li>\n\n\n\n
          5. Ouvrez les fichiers dans le Bloc-notes et recherchez des entr\u00e9es telles que FindOSPartitions<\/strong>, BCD<\/strong> ou Cannot get volume name<\/strong>.<\/li>\n<\/ol>\n\n\n\n
            Ces messages peuvent aider \u00e0 d\u00e9terminer si MBR2GPT rencontre une entr\u00e9e de d\u00e9marrage manquante, une partition Windows inaccessible ou un autre probl\u00e8me de configuration du disque.<\/p>\n\n\n\n
            Si vous ex\u00e9cutez MBR2GPT \u00e0 partir de l\u2019environnement de r\u00e9cup\u00e9ration Windows, l\u2019emplacement par d\u00e9faut des journaux peut \u00eatre diff\u00e9rent de C:Windows. Vous pouvez utiliser le param\u00e8tre \/logs pour enregistrer les fichiers de diagnostic dans un dossier existant sur un lecteur persistant.<\/p>\n\n\n\n
            6. Valider le disque et le convertir en GPT<\/h3>\n\n\n\n
            Apr\u00e8s avoir corrig\u00e9 la configuration de d\u00e9marrage et confirm\u00e9 que le disque r\u00e9pond aux exigences de conversion, validez-le \u00e0 nouveau.<\/p>\n\n
              \n
            1. Ouvrez l\u2019Invite de commandes en tant qu\u2019administrateur<\/strong>.<\/li>\n\n\n\n
            2. Ex\u00e9cutez mbr2gpt \/validate \/disk:0 \/allowFullOS<\/strong>, en rempla\u00e7ant 0 par le num\u00e9ro de disque correct.<\/li>\n\n\n\n
            3. Attendez que le message Validation completed successfully<\/strong> s\u2019affiche.<\/li>\n\n\n\n
            4. Ex\u00e9cutez mbr2gpt \/convert \/disk:0 \/allowFullOS<\/strong> pour lancer la conversion du disque.<\/li>\n\n\n\n
            5. Une fois la conversion termin\u00e9e, red\u00e9marrez l\u2019ordinateur et acc\u00e9dez aux param\u00e8tres du BIOS ou de l\u2019UEFI.<\/li>\n\n\n\n
            6. Passez le mode de d\u00e9marrage de Legacy\/CSM \u00e0 UEFI et s\u00e9lectionnez Windows Boot Manager le cas \u00e9ch\u00e9ant.<\/li>\n\n\n\n
            7. Enregistrez les modifications et red\u00e9marrez Windows.<\/li>\n<\/ol>\n\n\n\n
              Avant la conversion, v\u00e9rifiez que votre carte m\u00e8re prend en charge le d\u00e9marrage UEFI et suspendez la protection BitLocker si vous l\u2019utilisez. Conservez votre cl\u00e9 de r\u00e9cup\u00e9ration \u00e0 port\u00e9e de main.<\/p>\n\n\n\n
              Ne passez pas le mode de d\u00e9marrage en UEFI avant que MBR2GPT n\u2019ait termin\u00e9 la conversion avec succ\u00e8s.<\/p>\n\n\n\n
              L\u2019erreur \u00ab Cannot find OS partition(s) for disk 0 \u00bb indique g\u00e9n\u00e9ralement un probl\u00e8me de s\u00e9lection de disque ou de configuration de d\u00e9marrage plut\u00f4t qu\u2019une installation Windows manquante. Vous pouvez toutefois rencontrer des probl\u00e8mes li\u00e9s, notamment l\u2019erreur \u00ab the specified disk is not convertible \u00bb ou l\u2019erreur \u00ab Windows 11 can only be installed to GPT disks \u00bb. Si vous rencontrez d\u2019autres probl\u00e8mes li\u00e9s au disque, vous pouvez \u00e9galement r\u00e9soudre l\u2019erreur \u00ab Hard Disk Serial Number Changer unable to write \u00bb.<\/p>\n\n\n\n
              Questions fr\u00e9quentes<\/h3>\n\n\n\n
              Pourquoi MBR2GPT indique-t-il qu\u2019il ne trouve pas de partition(s) du syst\u00e8me d\u2019exploitation pour le disque 0 ?<\/h4>\n\n\n\n
              L\u2019erreur signifie g\u00e9n\u00e9ralement que MBR2GPT ne peut pas identifier une installation Windows valide \u00e0 partir de la configuration de d\u00e9marrage du disque s\u00e9lectionn\u00e9. Les causes fr\u00e9quentes sont notamment une mauvaise s\u00e9lection de disque, des entr\u00e9es BCD manquantes ou des fichiers de d\u00e9marrage situ\u00e9s sur un autre disque physique.<\/p>\n\n\n\n
              Puis-je corriger l\u2019erreur sans r\u00e9installer Windows ?<\/h4>\n\n\n\n
              Oui. De nombreux utilisateurs r\u00e9solvent l\u2019erreur en s\u00e9lectionnant le disque syst\u00e8me correct, en r\u00e9parant le BCD avec BCDBoot ou en corrigeant l\u2019emplacement de leurs fichiers de d\u00e9marrage Windows.<\/p>\n\n\n\n
              MBR2GPT supprimera-t-il mes fichiers ?<\/h4>\n\n\n\n
              Microsoft a con\u00e7u MBR2GPT pour convertir les disques syst\u00e8me sans supprimer les donn\u00e9es existantes. Toutefois, les modifications de la configuration de d\u00e9marrage et les op\u00e9rations sur les partitions comportent des risques : cr\u00e9ez donc une sauvegarde avant de continuer.<\/p>\n\n\n\n
              Dois-je marquer mon lecteur C: comme actif ?<\/h4>\n\n\n\n
              Uniquement s\u2019il s\u2019agit d\u2019une partition MBR que vous comptez utiliser comme partition de d\u00e9marrage syst\u00e8me et que vous avez confirm\u00e9 qu\u2019elle contient les fichiers de d\u00e9marrage BIOS requis. Marquer la mauvaise partition comme active peut emp\u00eacher Windows de d\u00e9marrer.<\/p>\n","protected":false},"excerpt":{"rendered":"
              L\u2019erreur \u00ab Cannot find OS partition(s) for disk 0 \u00bb appara\u00eet g\u00e9n\u00e9ralement lorsque MBR2GPT ne parvient pas \u00e0 localiser votre installation Windows ou ses fichiers de configuration de d\u00e9marrage. Cela se produit souvent lors de la conversion d\u2019un disque de MBR vers GPT, mais vous pouvez souvent la r\u00e9soudre sans r\u00e9installer Windows. Avant d\u2019essayer ces solutions, sauvegardez […]<\/p>\n","protected":false},"author":49,"featured_media":26598,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_enabled_clarity":"","footnotes":""},"categories":[10898],"tags":[],"work":[],"class_list":["post-26597","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-fix"],"acf":[],"yoast_head":"\nComment corriger l\u2019erreur \u00ab Cannot Find OS Partition(s) for Disk 0 \u00bb<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/windowsreport.com\/fr\/comment-corriger-lerreur-cannot-find-os-partitions-for-disk-0\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Comment corriger l\u2019erreur \u00ab Cannot Find OS Partition(s) for Disk 0 \u00bb\" \/>\n<meta property=\"og:description\" content=\"L\u2019erreur \u00ab Cannot find OS partition(s) for disk 0 \u00bb appara\u00eet g\u00e9n\u00e9ralement lorsque MBR2GPT ne parvient pas \u00e0 localiser votre installation Windows ou ses fichiers de configuration de d\u00e9marrage. Cela se produit souvent lors de la conversion d\u2019un disque de MBR vers GPT, mais vous pouvez souvent la r\u00e9soudre sans r\u00e9installer Windows. Avant d\u2019essayer ces solutions, sauvegardez […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/windowsreport.com\/fr\/comment-corriger-lerreur-cannot-find-os-partitions-for-disk-0\/\" \/>\n<meta property=\"og:site_name\" content=\"WindowsReport FR (French)\" \/>\n<meta property=\"article:published_time\" content=\"2026-10-15T12:32:13+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-10-15T12:50:11+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/windowsreport.com\/fr\/wp-content\/uploads\/sites\/3\/2026\/10\/cannot-find-os-partitions-for-disk-0.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1280\" \/>\n\t<meta property=\"og:image:height\" content=\"801\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Milan Stanojevic\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@MilanStanojev17\" \/>\n<meta name=\"twitter:label1\" 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