Windows 10 D Drive Disappeared After Update: Finding a Missing Partition

After an update, This PC lists only drive C. The second drive, with years of documents on it, is nowhere to be seen. Windows 10 D drive disappeared after update is frightening, but the data is very judolbet88 rarely lost.

Updates can occasionally remove a partition’s drive letter or change how a disk is presented. Without a letter, File Explorer does not show the drive, even though it is intact.

Disk Management tells you in seconds whether the partition is still there.

Likely Reasons Behind the Problem

A drive goes missing after updating for these reasons:

• The partition lost its drive letter.
• The disk has been set to Offline.
• A storage driver was replaced, and a second physical drive is not detected.
• The D drive was a DVD drive or card reader that is no longer recognised.

It helps to recall whether D was part of the main drive or a separate physical disk.

Simple Troubleshooting to Begin With

See what Windows detects.

1. Restart the PC once, in case the update had not finished configuring devices.
2. Right-click Start and choose Disk Management.
3. Look for a partition with the right size that has no letter beside its name.
4. If you find it, right-click it, choose “Change Drive Letter and Paths,” select Add, and choose D.
5. Open This PC to confirm the drive has returned.

If a disk is marked Offline on the left, right-click that label and choose Online.

Next-Level Steps

If the partition is not listed at all, check hardware and drivers.

1. In Disk Management, select Action > Rescan Disks.
2. Open Device Manager, expand Disk drives, and check whether the second drive is listed. Select Action > Scan for hardware changes.
3. Expand “IDE ATA/ATAPI controllers” or “Storage controllers,” update the driver, or use Roll Back Driver if available.
4. Enter the BIOS setup and check whether the second drive is detected there.
5. On a desktop, switch off, unplug the power, and check the drive’s cables.

If the space appears as “Unallocated” where D used to be, do not create a new volume. Partition recovery software, or a specialist, can often restore the original partition.

Before You Go Further: Keep Your Files Safe

Never format, initialise, or create a new volume on a drive that held data you want. Those actions overwrite the information needed for recovery. If recovery tools are required, use a reputable one in read-only scan mode first, and save recovered files to a different drive.

Wrapping Up

A D drive that vanishes after an update has usually just lost its letter. Disk Management restores it in a few clicks. If the disk itself is missing, check drivers and cables before assuming the worst.