"USB flash drive 8GB is now only 1GB", flash drive 64gb only shows 32gb;
"USB pen drive 16GB is only showing 4MB";
"4GB USB reduced to 30MB"...
Here are some scenarios from users' flash drive on tomshardware.com, how to restore the USB back to full capacity?
1. Diskpart clean create partition primary
2. Recover data from incorrect capacity pen drive with software
3. USB flash drive 0 bytes fixings
4. USB flash drive format with hp usb format tool
5. USB flash drive virus attack recovery using cmd
Video - how to format disk to the correct size with diskpart clean, create primary partition and format
Recommend: Diskpart to format USB>>
Diskpart clean and create primary partition
If you want to format disk without losing data, be free to use iCare Pro Free which would help for fixing the usb drive incorrect capacity issue without losing data.
Step1. Download iCare Pro Free, connect your usb drive to Windows 10/8/7. Select 'Deep Scan Recovery'.
Step2. Choose your flash drive to let the tool open it for you
Step3. Once the program found your data, save them onto another device.
Are you feared of data loss since USB drive shows 0 bytes used space and 0 bytes free space?
1. Reason – Why pen drive has 0 bytes space
2. Solution – How to fix 0 bytes of pen drive
Video Guide - How to change usb raw file system to fat32
Step2. Format the pen drive with any of methods recommended above.
You can also restore unknown capacity pen drive back to original state using thumb drive format software – HP USB Disk Storage Format Tool, a professional format utility for USB disk.
HP usb format tool user guide
Another way to restore pen stick/drive to original disk size is to use command prompt.
Video Tutorial – CMD to recover pen stick back to full capacity
Are you unable to format USB disk back to full capacity?
Reason: You probably got a fake USB pen drive that has incorrect storage size
If you got a fake USB pen stick, you can only format the pen drive back to actual size.
You bought a 16GB pen stick, but its true size is only 8GB (Some tool is able to make a less GB disk show larger than it should have been). In this situation, the pen drive would only show 8GB even after formatting it because 8GB is its actual storage size.
Last updated on June 30, 2021