CRYPTSETUP-FVAULT2OPEN(8) (NAME) cryptsetup-fvault2Open - (FileVault2) (SYNOPSIS) cryptsetup fvault2Open [<>] <> <> cryptsetup open --type fvault2 [<>] <> <> (DESCRIPTION) FileVault2 <> <> . --test-passphrase --volume-key-file . --volume-key-file . <> : [--allow-discards, --batch-mode, --debug, --help, --key-file, --keyfile-offset, --keyfile-size, --key-size, --readonly, --test-passphrase, --timeout, --tries, --usage, --version, --verify-passphrase, --volume-key-file]. (OPTIONS) --allow-discards (TRIM / discard) . LUKS2 . --batch-mode, -q . ! --verify-passphrase . --debug --debug-json . # . --debug-json LUKS2 JSON . --help, -? . --key-file, -d . "-" (stdin) . . plain --key-file dm-crypt (stdin) (digest) dm-crypt . NOTES ON PASSPHRASE PROCESSING cryptsetup(8) . --key-size, -s . . . /proc/crypto . /proc/crypto . plain luks . LUKS2 (re- encryption) . --key-size --volume-key-file ( ). --keyfile-offset . --keyfile-size, -l . --help . . (trailing newlines) . --keyfile-offset . --readonly, -r (read-only). --test-passphrase . . --timeout, -t () . . --key-file . . . --tries, -T . . --usage . --verify-passphrase, -y . plain . (stdin) . --version, -V . --volume-key-file , --master-key-file ( ) . luks bitlk . (re-encryption) . --volume-key-file --key-size . (REPORTING BUGS) cryptsetup . --debug . (SEE ALSO) cryptsetup (FAQ) cryptsetup(8), integritysetup(8) veritysetup(8) (CRYPTSETUP) cryptsetup . cryptsetup 2.8.8 2026-09-07 CRYPTSETUP-FVAULT2OPEN(8)