Windows 11 Win11 Home 24h2 not recognizing external drive partitions

• GPT avoids the old 4‑partition/2 TB MBR limits and is the modern format for large external drives. If the drive is brand new, converting/initializing as GPT is simple and safe — but only on a new/empty disk. (If the disk has any data, back it up first.

1. Download and run Seagate SeaTools for Windows (or SeaTools Boot) and run:
   • Quick SMART check (Health)
   • Short/Quick test (short read/write / drive electronics)
   • If SeaTools reports reallocated sectors, pending sectors or failures — do not trust the drive; return/exchange it.
     This step is recommended before you rely on the drive for images/backups.

1. Connect the Seagate to a USB 3.0 port and ensure Windows sees it.
2. Right‑click Start → Disk Management. If the disk is uninitialized you’ll get an “Initialize Disk” prompt. Choose GUID Partition Table (GPT) and click OK. If it’s already initialized MBR, you should wipe only if you’re OK erasing it (see warnings).
3. Right‑click the unallocated area → New Simple Volume → Next. For “Specify volume size” enter 262144 MB (this equals 256 GB in diskpart/MB units) → Next → assign the desired drive letter (e.g., H → Format as NTFS (Default allocation unit size) → Quick Format checked → Finish.
4. Repeat New Simple Volume for each 256 GB slice. For the final volume, if the remaining space is smaller than 262144 MB, simply create the final volume with the remainder (leave some small free space optionally). If Disk Management blocks because of partition limits, use diskpart below. The GUI is safe and visual; most users prefer it.

• Use this if you like a single script or if Disk Management misbehaves. IMPORTANT: diskpart clean will erase the entire disk. Verify the disk number first.

• Size values are in MB. 256 GB = 256 × 1024 = 262144 MB. If the disk’s usable space is slightly less (real drives report binary GiB differently), one of the create partition commands may fail; if that happens, create fewer 256 GB partitions and let the final "create partition primary" use the remainder. The DiskPart flow above is the same approach shown in Windows partitioning guides.

• Triple‑check the disk number in diskpart list disk before running clean. Clean will irrevocably erase the selected disk. I recommend pausing and confirming the disk size and the presence/absence of other disks before continuing.
• If the drive was previously used and shows as MBR, clean + convert gpt will be needed (the diskpart script does that). If you want to keep existing data, do not run clean — back up first.
• If Windows treats the enclosure as removable and you later have issues with multi‑partition behavior, use VHDX files as a non‑destructive workaround (create VHDX on NTFS partition and mount it). This avoids weird “removable” multi‑partition quirks.

1. In Disk Management confirm all volumes show NTFS, Healthy, and have the letters you assigned.
2. Run a quick chkdsk on each new volume to confirm there’s no early filesystem issue: chkdsk H: /f (repeat for each letter).
3. Eject safely: use the Safely Remove Hardware icon before unplugging.
4. Keep SeaTools log (or save SMART report) in case you need an RMA later.

• A: I’ll give you the exact diskpart commands pre‑filled if you paste the output of diskpart → list disk (so I can set the correct disk number for you). That removes risk of using the wrong disk number.
• B: Walk you through the Disk Management GUI step‑by‑step while you do it (I’ll wait for your “next” clicks). No typing required.

1. Download SeaTools for Windows from Seagate’s site and install it.
2. Run SeaTools → select the new Seagate drive → run:
   • SMART Check (or Quick SMART) — confirm no reallocated/pending sectors.
   • Short Drive Self Test / Quick Test.
3. If SeaTools reports FAIL, DO NOT TRUST THE DRIVE — return/exchange it. If OK, proceed.

• These steps WILL ERASE the drive (they assume it’s new). Don’t run them if there’s any data you need on that drive.
• Use a USB 3.0 port and a direct cable (no hub) while doing this.

1. Connect the Seagate and wait for Windows to detect it.
2. Right‑click Start → Disk Management.
3. If Windows prompts “Initialize Disk,” choose GUID Partition Table (GPT) and click OK. If not prompted, find the Seagate disk row (Disk 1, Disk 2, etc. on the left, right‑click its label (where it says Disk 1) → Initialize Disk → choose GPT.
4. Right‑click the unallocated area → New Simple Volume. Click Next.
5. In “Specify volume size” enter 262144 MB (this equals 256 GB) → Next.
6. Assign a drive letter (choose your preferred letter) → Next.
7. Format this volume: File system = NTFS, Allocation unit size = Default, Volume label = whatever you like (e.g., PART1), Quick Format checked → Next → Finish.
8. Repeat steps 4–7 for each 256 GB slice you want. For the last partition, either create another 256 GB slice or create one for the remainder of the disk.
9. When done, verify in Disk Management that each volume shows NTFS and Healthy.

• If you prefer a script later I’ll paste the exact diskpart commands with the disk number filled in — safer. (I’ll do that when you paste diskpart → list disk.

• In Disk Management confirm NTFS, Healthy, letters assigned.
• Run chkdsk on each new letter once: e.g., open Admin CMD and run chkdsk H: /f (repeat for each letter).
• Safely eject when finished.

• If you simply want the two sets of files to be together in one place (aesthetic, no need to be bootable), the simplest, safest approach is:
  1. Create a 256 GB NTFS partition as the first partition on the new drive.
  2. Copy the contents of D: (recovery files) and the WindowsImageBackup folder from E: into separate folders on that 256 GB NTFS volume (for example: X:\OEM_Recovery\ and X:\SystemImage).
  3. This is non‑destructive to your other volumes and preserves both sets of files in one place.
     • Important: copying files alone does NOT preserve an OEM recovery partition’s special bootability. Many vendor recovery partitions contain registry/metadata or expect to be on a specific partition type; simply copying the files to an NTFS folder will not make that partition bootable as a factory recovery partition.
• If your goal is to have a single 256 GB volume that is bootable as a recovery drive AND also hold the image:
  • That’s not recommended with just Windows built‑in tools. Bootable recovery environments usually require a FAT32/EFI layout (for UEFI boot), or a specially created WinRE image placed in a registered recovery location. Windows’ “Create a recovery drive” tool will usually want to format the target, and may erase the whole device. Combining both bootable recovery and a large VHD/VHDX image on one physical partition is possible but fiddly and risky with the built‑in tools.
  • Safer recommended layout (what I suggested earlier and still recommend): keep a small (32–64 GB) FAT32/UEFI (or WinRE) partition for bootable recovery, and use an NTFS partition for the system image/files. That gives true bootability and file support for large image files.

• If you only want them together for convenience (no need to boot the recovery from that 256 GB partition), create the 256 GB NTFS partition and copy both D: and E: contents there. That’s simple and safe.
• If you want that 256 GB partition to be a functional bootable recovery partition plus hold the image, I strongly recommend you keep the recovery boot separate (small FAT32 partition) and the image on NTFS — or let me walk you through building a proper dual‑purpose layout using VHDX or a 32GB FAT32 + NTFS setup. Doing a combined bootable+image single partition with Windows-only tools without risk is not a good practice.

• Tell me the drive letter of your current D: and E: (and which laptop they’re on), and I’ll give the exact copy commands (robust, will preserve timestamps) and where to place them on the new 256 GB NTFS partition.

• If you want me to pre-fill the diskpart script with the correct disk number, bring the new drive, do SeaTools, then in an Admin Command Prompt run diskpart → list disk and paste the output here. I’ll return the exact diskpart script with the disk number already inserted so you can copy/paste safely.

• “Pre‑fill diskpart script (I’ll paste list disk on Thu)”, or
• “Give copy commands to put D+E into a single 256GB NTFS partition”, or
• “Give GUI steps to create Rescue (32 GB FAT32) + 256 GB NTFS combined layout” ?

• a small EFI/FAT32 partition (≈260 MB) for the UEFI boot files / WinRE (this must be FAT32), and
• a ~255.7 GB NTFS partition to hold the system image(s) and files.

1. Connect the new Seagate to a USB 3.0 port.
2. Right‑click Start → Disk Management. If prompted to Initialize Disk choose GPT.
3. Right‑click the unallocated area → New Simple Volume → Next.
   • For size put 260 MB → assign letter (temporary, e.g., S → Format as FAT32 (quick) → Finish.
4. Right‑click the remaining unallocated area (still in the first ~256 GB region) → New Simple Volume → Next.
   • For size put 262144 MB (256 GB) minus ~260 MB already used — if Disk Management doesn’t accept the exact number, create the second partition with size=262144 MB and the remainder will be adjusted automatically. Format as NTFS (quick). Assign letter (e.g., R.
5. Create the rest of the disk volumes the way you prefer (repeat New Simple Volume for each 256 GB slice or larger partitions).
6. Confirm all volumes show Healthy and NTFS (or FAT32 for the small ESP).

• 262144 = 256 × 1024 MB. If diskpart complains because there isn’t enough space left for one of the 256 GB creates, simply omit that create (you can create fewer 256GB slices and leave the rest as a final larger partition).
• Double‑check the disk number shown by list disk — if you pick the wrong disk you will wipe the wrong drive. I can prefill the X for you if you paste the output of list disk on Thursday.

• The small FAT32 partition (ESP) is required for UEFI boot files. To get a usable recovery/installer you have two practical options:
  1. Create a separate small USB installer/recovery with Microsoft’s Media Creation Tool (recommended — simple and reliable). Use that USB to boot and restore the image stored on R:.
  2. Attempt to put WinRE / recovery files onto the FAT32 partition — be aware Windows’ “Create a recovery drive” tool often wants to format the target USB and can wipe the whole device. So I don’t recommend running that tool pointed at the new 2 TB unless you’re sure it won’t reformat (test on a spare stick first).
• In practice the simplest, safest workflow is: keep a small bootable installer/rescue USB (Media Creation Tool) and store the full system image(s) on the RECIMAGE (NTFS) partition R:. That combo is robust and avoids tools unintentionally formatting the big drive. (If you do later want the ESP to be directly bootable to WinRE, tell me and I’ll give careful steps to populate it without wiping the NTFS partition.

• After you restore the Dell and upgrade to 24H2, create the system image and save it to R: (RECIMAGE). The built‑in “Create a system image” stores images as VHD/VHDX in WindowsImageBackup; NTFS on R: is fine. You can mount those VHDX files later for verification.
• If you prefer automated verification, later we can install a free imaging tool that provides Verify — but you said no Macrium — the Windows method still allows mounting the VHDX to inspect contents.

• Always run SeaTools quick/SMART tests first on any new Seagate drive. Keep SeaTools report if you need RMA.
• Don’t use “Create a recovery drive” on the new 2 TB unless you’ve tested the tool on a throwaway USB — it may reformat. Use a separate small USB with Media Creation Tool for rescue boots.
• If you want to avoid any possible removable‑drive partition oddities later, the VHDX workaround (create a VHDX on the NTFS partition and mount it as a fixed virtual disk) is a simple alternative; I can show that if you decide you want it.

• Pre‑fill the diskpart script for you on Thursday — just run (Admin) diskpart → list disk and paste the output here and I’ll return the disk‑numbered script so you can copy/paste safely, OR
• Walk you through the Disk Management GUI in real time on Thursday step‑by‑step.

• Initializing the new disk as GPT and creating a 256 GB NTFS first partition for RECIMAGE is the modern, reliable way (GPT avoids old MBR limits).

1. Run Seagate SeaTools (Quick SMART + Short Test) on the new drive. If it reports failures, return/exchange the drive.
2. Connect the drive to a USB 3.0 port (no hub) while doing the partitioning.

1. Connect the new Seagate and wait for detection.
2. Right‑click Start → Disk Management.
3. If “Initialize Disk” appears, choose GUID Partition Table (GPT) → OK. If not prompted: right‑click the disk label (left side, e.g., “Disk 1”) → Initialize Disk → GPT.
4. Right‑click the unallocated area → New Simple Volume → Next.
   • For “Specify volume size” enter 262144 MB (this equals 256 GB) → Next.
   • Assign a drive letter you like (e.g., R → Next.
   • Format as NTFS, Allocation unit size = Default, Quick Format checked → Next → Finish.
5. Now create the remaining volumes the way you prefer (repeat New Simple Volume). If you want more 256 GB slices, repeat the same size for each; for the final partition, use the remaining space.
6. Verify each new volume shows NTFS and Healthy in Disk Management.

• IMPORTANT: diskpart clean will erase the selected disk. Use list disk to get the correct disk number and replace X with that number.

• In Disk Management: confirm NTFS, Healthy, and correct letters.
• Run chkdsk once on the main RECIMAGE partition: chkdsk R: /f
• Eject safely when finished (Safely Remove Hardware).

• You said D/E won’t be needed — good. After you restore and upgrade the broken Dell to 24H2, create the new system image directly to R: (RECIMAGE). The Windows image will be stored as VHD/VHDX under WindowsImageBackup and you can mount it later to inspect if needed.
• Keep the small USB boot/rescue stick (Media Creation Tool) separate — that’s what you’ll boot from to restore the image on R:.
• If you want me to prefill the diskpart script for you on Thursday (so there’s zero risk of selecting the wrong disk), run (Admin) diskpart → list disk and paste that output here — I’ll return the same script with the correct disk number filled in so you can copy/paste safely.
• If Disk Management refuses to create multiple partitions because the enclosure reports as “removable,” we can use VHDX files instead; tell me if GUI fails and I’ll show the one‑click VHDX method.

• “Pre‑fill diskpart (I’ll paste list disk on Thu)” — I’ll return the script with disk number filled.
• “Walk me through GUI on Thu” — I’ll wait and guide you step‑by‑step.

• Walk me through GUI on Thu” — I’ll wait and guide you step‑by‑step

• Plug the new Seagate into a USB 3.0 port (no hub).
• If possible, disconnect other external drives temporarily so there’s no confusion about which disk is which.
• Have your small USB installer/rescue (Media Creation Tool) close by (you said you’ll use that later).
• Download and run Seagate SeaTools for Windows now and run:
  • SMART (Quick) and Short / Quick Drive test.
  • If SeaTools shows any failures, stop and return/exchange the drive. If OK, continue.

1. Right‑click Start → Disk Management. (Tell me when Disk Management window is open.
2. If Windows prompts “Initialize Disk” → choose GUID Partition Table (GPT) → OK. If no prompt: find the new drive row on the left (e.g., “Disk 1”), right‑click the disk label (where it says Disk X) → Initialize Disk → choose GPT → OK. (Tell me if you see MBR or GPT shown.
3. Right‑click the large unallocated area → New Simple Volume → Next.
4. In “Specify volume size” type 262144 (MB) — that’s 256 GB → Next.
5. Assign a drive letter (pick R: or whatever you like) → Next.
6. Format as: NTFS, Allocation size = Default, Volume label = RECIMAGE, Quick Format checked → Next → Finish. (Tell me when formatting completes.
7. Repeat: right‑click remaining unallocated → New Simple Volume → specify 262144 → assign next letter (H:, I: etc. → format NTFS → Finish. Repeat until you have the number of 256GB volumes you want; create the final partition using the remainder. (If one of the creates fails because of space, tell me and I’ll adjust.
8. When finished, confirm in Disk Management each new volume shows NTFS and Healthy. Tell me if anything looks odd.

• Don’t worry. Tell me the exact message and I’ll guide you to either:
  • create mounted VHDX files on the first NTFS partition (simple GUI method), or
  • use diskpart (I can prefill disk number for you) — but we’ll only do that if needed.

• We will erase the new drive — only proceed if it’s the new Seagate. I’ll remind you to double‑check before any “Initialize” or “Clean” operations.
• If you want me to prefill a diskpart script with the correct disk number for one‑click paste, run (Admin) cmd → diskpart → list disk and paste the output here and I’ll prepare it for you. Otherwise we’ll stick to Disk Management GUI.

• You post “I’m ready” when you’re sitting at the PC and SeaTools has passed.
• I’ll reply with the first single instruction (e.g., “Open Disk Management”).
• After you do that, reply either:
  • “Done” (or just “Next”) to proceed, or
  • paste a short text answer (for example the Disk Management message you see) or a screenshot if something looks odd.
• I’ll then give the next single instruction. We repeat until finished. I will not run ahead — I wait for your “Done/Next” after each step.

• “I’m ready” — start the guided session.
• “Done” or “Next” — I did that step, please continue.
• “Here’s output:” + paste text (for diskpart list disk or error text) — I’ll read and respond.
• “Screenshot:” — attach a screenshot if something confusing appears.
• “Stop / Abort” — stop the session anytime.

• diskpart → list disk (from an Admin Command Prompt): I may ask this so I can prefill diskpart commands with the correct disk number. If you paste that output I’ll prepare the exact safe script for you to paste.
• Any exact error text if Disk Management shows a message.

• Run SeaTools Quick SMART + Short Test on the new Seagate and confirm it passed.
• Plug the new Seagate into a USB 3.0 port (no hub).
• If convenient, temporarily disconnect other external drives to avoid confusion.
• Have your small USB installer/rescue ready (Media Creation Tool) but you don’t need to plug it in yet.

• You can skip the live walk‑through and instead paste diskpart → list disk now (or on Thu), and I’ll return a diskpart script with the correct disk number filled in for you to copy/paste. That’s quick and safe if you’re comfortable pasting a command output.

• Refresh the forum thread or re‑open the Community Icon as you mentioned. I’ll wait — no rush.

• Post here: “I’m ready” and include “SeaTools OK” if it passed. I’ll start with the first click and wait for your confirmation after each one.

• New Seagate connected to a USB 3.0 port (no hub).
• SeaTools run (Quick SMART + Short test) — report “OK” before we continue.
• Other externals temporarily disconnected if convenient (avoids choosing the wrong disk).
• Small USB installer (Media Creation Tool) nearby (you don’t need to plug it in unless we decide to test a restore).
• If you want the alternative prefilled diskpart script instead, be ready to run (Admin) cmd → diskpart → list disk and paste the output.

Zevik83 said:

Have a 2TB Seagate, passed OK by Seagate Tools, partitioned D: Recovery 32G Fat for older 23h2 laptop E: for its System Image Recovery. Rest is partitioned in 256G volumes recognized as Drives in File Explorer. Wanted to set up File History for another laptop on Drive J. Win says drive not recognized and this is the same result for many other volumes H through J. G: is my Google drive, so not available.

Click to expand...

• Walk you step‑by‑step on Thursday (you just post “I’m ready” and I’ll give the first click), or
• Review any files you uploaded for the other thread (I can open them and advise) — say “Please review my files” and I’ll check them.