Storage
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list of problems
19 resultsDisk usage is 100% in Task Manager
When troubleshooting 100% disk usage in Task Manager, it is important to rule out causes one at a time. Based on the “Disk 100%” symptom, check for background I/O and storage device response delay and proceed to the next step. Check the processes using the disk, free space, connection speed and SMART in that order.
Problem with C drive having almost no space
If the current symptom is close to “C drive full,” first check whether there are temporary files, update files, large apps, or user files. Check the processes using the disk, free space, connection speed and SMART in that order.
Temporary or system files keep growing
If many temporary files are accumulating, possible causes include the Windows Update cache, application caches and dump files. Check disk activity, free space, connection speed and SMART health in that order.
SSD or NVMe not recognized in BIOS
Among storage device problems, the “SSD BIOS not recognized” symptom may be related to poor mounting or slot/shared lane restrictions. Check the recognition location in BIOS and Disk Management and cross-test cables, ports, and slots.
SSD appears in BIOS but not in Windows
If “SSD not recognized by Windows” repeats, it is better to narrow it down to no partition/drive letter and storage driver rather than changing several settings at once. Check the recognition location in BIOS and Disk Management and cross-test cables, ports, and slots.
Hard disk not recognized problem
When troubleshooting a hard disk not being recognized problem, it is important to rule out the causes one at a time. Based on the “HDD not recognized” symptom, check for SATA data/power cable problems, port or drive failure, and then proceed to the next step. Check the recognition location in BIOS and Disk Management and cross-test cables, ports, and slots.
Problem with external hard drive or external SSD not being recognized
If “external hard drive not recognized” repeats, it is better to narrow it down to USB cable/port issues or power shortage rather than changing multiple settings at once. Check the recognition location in BIOS and Disk Management and cross-test cables, ports, and slots.
External hard drive keeps disconnecting while in use
If you see the symptom of “external hard drive keeps disconnecting”, possible causes include USB power management, cable/hub issues, etc. Cross-test devices, cables, and USB ports and check for power management and driver issues.
The disk is visible, but there is no drive letter, so it does not appear in Explorer.
If you are seeing the “No Drive Letter” symptom, possible causes include unassigned drive letter, volume mount setup issues, etc. Check the recognition location in BIOS and Disk Management and cross-test cables, ports, and slots.
Issue with new disk showing as Unallocated
If the current symptom is closer to “disk unallocated”, first check whether the new disk has no partitions or whether the partition table may be damaged. Check the recognition location in BIOS and Disk Management and cross-test cables, ports, and slots.
USB or disk becomes read-only and cannot be saved
This guide is organized to classify physical lock switch and file system error items in a safe order in “disk read-only” situations. Prioritize backing up important data, then check the actual drive status using SMART and manufacturer diagnostics.
Problem with SSD/USB/external hard drive file copy speed being too slow
If the current symptom is closer to “slow file copy,” first check whether there are many small files or USB specification/port restrictions. Check the processes using the disk, free space, connection speed and SMART in that order.
Drive reports a S.M.A.R.T. error or warning
This guide is designed to classify items such as reallocated sectors, read errors, temperature, etc. in a safe order, in “SMART error” situations, exceeding thresholds, and possibly imminent drive failure. Prioritize backing up important data, then check the actual drive status using SMART and manufacturer diagnostics.
Problem with clicking sound from hard disk
If “hard disk clicking” occurs repeatedly, it is better to narrow it down to a mechanical drive head/motor problem, power source, or physical failure rather than changing several settings at once. Prioritize backing up important data, then check the actual drive status using SMART and manufacturer diagnostics.
The file is damaged and cannot be opened or an error occurs.
If you see “file corruption” symptoms, possible causes include storage device or file system errors, abnormal termination, etc. Prioritize backing up important data, then check the actual drive status using SMART and manufacturer diagnostics.
Disk check CHKDSK repeats every time you boot
If “disk check every boot” is repeated, it is better to narrow the scope to file system dirty bits and drive errors rather than changing several settings at once. Prioritize backing up important data, then check the actual drive status using SMART and manufacturer diagnostics.
NVMe SSD disappears under load and returns only after restarting
Among storage problems, the “NVMe disappearing” symptom may be related to SSD overheating or firmware/controller errors. Prioritize backing up important data, then check the actual drive status using SMART and manufacturer diagnostics.
SSD speed is much slower than expected
If “slow SSD” occurs repeatedly, it is better to narrow it down to insufficient drive capacity and thermal throttling rather than changing several settings at once. Check the processes using the disk, free space, connection speed and SMART in that order.
Disk usage skyrockets and the entire computer freezes
When troubleshooting a problem where disk usage is skyrocketing and the entire computer freezes, it is important to rule out the causes one at a time. Based on the “SSD 100% freezing” symptom, check the storage device response delay or malfunction and the storage driver before proceeding to the next step. Prioritize backing up important data, then check the actual drive status using SMART and manufacturer diagnostics.