Most people who lose files had a backup. It was on a drive that stopped being plugged in six months earlier, or it captured the wrong folder, or nobody had ever opened it to see what was inside. A backup you have not restored from is a hope, not a copy. What follows is a routine that takes about twelve minutes to set up and four minutes a month to maintain, built from tools already in Windows 11.
Size the Drive Before You Choose the Method
Add up the folders you actually care about, then double it. Photos and video dominate: a phone’s 128 GB of camera roll becomes 128 GB on disk, and a modest Lightroom catalogue passes 200 GB quickly. A 1 TB USB 3.0 portable hard drive costs BDT 6,000–7,500 locally and covers most households; a 2 TB unit adds perhaps BDT 2,500 and is the better buy because File History keeps multiple versions, not just the latest copy.
Format it NTFS. File History refuses exFAT and FAT32 drives outright, and the error message does not say so plainly. Plug into a USB 3.0 port — the blue one — because a 5,400 rpm drive on USB 2.0 manages about 30 MB/s, which turns a 40 GB first run into a 25-minute wait instead of eight.
File History: Set the Schedule and the Retention
Open Control Panel → File History (or Settings → System → Storage → Advanced storage settings → Backup options), pick the drive, and click Turn on. Then open Advanced settings and change two defaults: set Save copies of files to Every hour, and set Keep versions to 1 year if the drive has room, otherwise 3 months.
Add exclusions while you are there. Point File History away from node_modules, virtual machine images, Steam libraries, and any folder holding ripped ISO files; those eat the drive without being worth versioning. One caveat that catches people out: File History only covers libraries and folders under your user profile by default. Work folders on D:\ need the separate job described below, or they will never be copied. Microsoft’s File History documentation lists the default scope in full.
One robocopy Line for Everything Else
For project folders outside your profile, a scheduled robocopy job is more reliable than dragging files by hand. Open Notepad and save this as backup-work.cmd:
robocopy "D:\Work" "E:\Backup\Work" /MIR /Z /R:2 /W:5 /XD node_modules .git /LOG+:E:\logs\work.log /TEE
Read the flags before running it. /MIR mirrors the source, which means it also deletes files at the destination that no longer exist at the source — powerful, and dangerous if you point it at the wrong pair of folders. /Z makes the copy restartable across a dropped USB connection, /R:2 limits retries so an open file does not stall the run, and /XD skips the folders listed after it. Test it once by hand with /L appended, which lists what would happen without copying anything.
Then schedule it: Task Scheduler → Create Basic Task, daily at 21:00, action Start a program, point at the .cmd file, and tick Run whether user is logged on or not. A daily 90-second job beats a monthly heroic one.
Restore Something on Purpose
Once a month, pick a file you edited last week and get it back from the backup. In File Explorer, right-click the folder, choose Properties → Previous Versions, and open the dated copy. Restore to a different folder first — restoring over the original is how good backups turn into bad afternoons. With File History, Restore personal files shows versions with a green arrow to recover a single document.
Write the result in a note: date, file, whether it opened. The month you cannot restore is the month you find out the drive letter changed and the job has been failing silently since March.
Four Failure Modes That Erase Backups
Leave the drive disconnected between runs. A permanently attached USB drive is deleted along with your files by any ransomware that encrypts mapped volumes, and a power surge takes both. Turn on BitLocker for the backup drive and store the recovery key somewhere other than the laptop — a stolen drive holding your tax records is its own problem. Check the drive’s health with CrystalDiskInfo every few months; a reallocated sector count above zero on a five-year-old drive means replace it now. Finally, keep one copy off-site: a second drive at a relative’s house, or an encrypted archive in cloud storage, updated quarterly. That is the difference between a backup and a spare.
Phones need the same discipline, and the phone backup routine here covers the mobile half. If the backup drive is filling faster than expected, freeing space on the source drive first makes every subsequent run shorter.