problem when erasing unused space on flash drive
I deleted files from Flash drive. I want to make them unrecoverable. I tried to wipe free space with Eraser and Ccleaner software. Only data partition was wiped. But both softwares stopped working suddenly. They simply turned off. Eraser sometimes shown error of un-existent device and sometimes stopped with no error.CCleaner shown un-existent device error also. I used 2 passes erasing. The flash surface is Ok. No bad blocks. It was checked with Hard disk sentinel. Recuva siftware normally scans it. I inserted the flash in other port. Tne same result. Please write me, how to solve the issue. The flash is bootable and created by Ventoy. It has two partitions: bootable and data. May be I thought about loading in the UEFI, because the bootable is called VTOYEFI. It has FAT file system. The data partition has Exfat system.
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