{"id":57641,"date":"2023-07-02T14:51:27","date_gmt":"2023-07-02T09:21:27","guid":{"rendered":"http:\/\/198.58.113.91\/blog\/?p=57641"},"modified":"2026-03-09T12:15:16","modified_gmt":"2026-03-09T06:45:16","slug":"mystery-drive-appears-system-properties","status":"publish","type":"post","link":"https:\/\/www.winhelponline.com\/blog\/mystery-drive-appears-system-properties\/","title":{"rendered":"Mystery Drive appears in System Properties Protection tab"},"content":{"rendered":"

When you open System Properties and click the System Protection tab to create a restore point, you may notice a mystery drive appearing with the volume GUID string (e.g., \\\\?\\Volume{a6810e9c-8234-4cd1…) instead of a drive letter.<\/p>\n

\"unknown<\/p>\n

The drive may not appear in File Explorer.<\/p>\n

Cause<\/span><\/h2>\n

The mystery drive that appears in the System Restore dialog is your Recovery<\/strong> partition. The Recovery partition doesn’t appear in the drives list on most systems. However, on systems where the recovery partition’s size is 1 GB<\/strong> or more, this problem occurs.<\/p>\n

To verify that the mystery volume is your recovery partition, select the \\\\?\\Volume<\/code> entry in the System Protection tab, and click Configure.<\/p>\n

Drag the “Max Usage” slider to the far right, and note the drive’s total size.<\/p>\n

\"unknown<\/p>\n

Click Cancel, and close the System Properties dialog box.<\/p>\n

Open Disk Management and check if the size corresponds to the recovery partition’s size.<\/p>\n

\"unknown<\/p>\n

Note: The recovery partition should say “Healthy (Recovery Partition)”. But if the description appears blank except for the disk size, run Diskpart, inspect the volume’s disk ID<\/a>, assign a drive letter, and inspect the drive’s contents. It’s most likely your recovery partition, but the disk ID may have been incorrectly set. But that’s a different issue altogether.<\/em><\/p>\n

Workarounds<\/h2>\n

There are two ways to work around the issue.<\/p>\n

The first option will be to shrink the partition using the Diskpart command-line. Shrink it to 900 MB or so, assuming that your WinRE.wim image is less than 900 MB.<\/p>\n

The default Winre.wim<\/a> found in the Windows 10 or 11 (22H2) ISO will be less than 600 MB, as it doesn’t have additional drivers.\u00a0OEMs add packages and drivers to Winre.wim image that significantly increases the size of the image. If your OEM Winre.wim contains undeeded stuff, you can service the image offline by using DISM and remove the unneeded drivers from it after exporting them to a safe location.<\/p>\n

The second option will be to assign a drive letter for the Recovery partition using Diskpart and then hide the drive using the NoDrives registry value<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"

When you open System Properties and click the System Protection tab to create a restore point, you may notice a mystery drive appearing with the volume GUID string (e.g., \\\\?\\Volume{a6810e9c-8234-4cd1…) instead of a drive letter.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[8,869],"tags":[562],"class_list":["post-57641","post","type-post","status-publish","format-standard","hentry","category-windows-10","category-windows-11","tag-system-restore"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":59574,"url":"https:\/\/www.winhelponline.com\/blog\/efi-system-partition-appears-in-explorer\/","url_meta":{"origin":57641,"position":0},"title":"[Fix] EFI System Partition Appears in Explorer","author":"Ramesh","date":"July 21, 2023","format":false,"excerpt":"The EFI system partition, which contains your boot files and boot configuration database, is hidden by default. 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