BLKDISCARD(8) blkdiscard - blkdiscard [] [-o ] [-l ] blkdiscard . (SSD) . fstrim-(8), . , blkdiscard . , . . : ! Since util-linux v2.41, fdisk has the ability to discard sectors on both partitions and unpartitioned areas using the 'T' command. Additionally, sfdisk has the option --discard-free to discard unpartitioned areas. KiB (=1024), MiB (=1024*1024), GiB, TiB, PiB, EiB, ZiB YiB (,,iB" , ., ,,K" ,,KiB") KB (=1000), MB (=1000*1000), GB, TB, PB, EB, ZB YB. -f, --force . 2.36 (O_EXCL) . --force . -o, --offset . . . -l, --length ( ). . , blkdiscard . . -p, --step . ,,ioctl" . -q, --quiet . -s, --secure . . . -z, --zeroout . -v, --verbose . --step, . -h, --help . -V, --version Display version and exit. blkdiscard : 0 1 ; , 2 ; 2.39, Lukas Czerner , Karel Zak fstrim(8) For bug reports, use the issue tracker . blkdiscard ,,util-linux" . util-linux 2.41 2025-03-29 BLKDISCARD(8)