date Wed Feb 25 11:54:55 AM WET 2026 lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS sda 8:0 0 953.9G 0 disk -sda1 8:1 0 953.9G 0 part /media/toby/Lexar nvme0n1 259:0 0 465.8G 0 disk -nvme0n1p1 259:1 0 512M 0 part /boot/efi -nvme0n1p2 259:2 0 4G 0 part /recovery -nvme0n1p3 259:3 0 457.3G 0 part / -nvme0n1p4 259:4 0 4G 0 part --cryptswap 253:0 0 4G 0 crypt [SWAP] nvme1n1 259:5 0 465.8G 0 disk --nvme1n1p1 259:6 0 465.8G 0 part # The sda blocks are the USB flash drive. # The nvme are the insternal non-volital flash. #### ls -l /dev/sd* brw-rw---- 1 root disk 8, 0 Feb 25 11:12 /dev/sda brw-rw---- 1 root disk 8, 1 Feb 25 11:12 /dev/sda1 #### sudo fdisk -l /dev/sda Disk /dev/sda: 953.87 GiB, 1024209543168 bytes, 2000409264 sectors Disk model: SL300 Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disklabel type: dos Disk identifier: 0x0000704c Device Boot Start End Sectors Size Id Type /dev/sda1 * 2048 2000409263 2000407216 953.9G 7 HPFS/NTFS/exFAT #### mount | grep sda /dev/sda1 on /media/toby/Lexar type exfat (rw,nosuid,nodev,relatime,uid=1002,gid=1002,fmask=0022,dmask=0022,iocharset=utf8,errors=remount-ro,uhelper=udisks2) #### less /var/log/syslog # Look for discovery of the USB drive Feb 25 11:12:37 pop-os kernel: [ 2.097562] usb 4-1: new SuperSpeed Plus Gen 2x1 USB device number 2 using xhci_hcd Feb 25 11:12:37 pop-os kernel: [ 2.118715] usb 4-1: New USB device found, idVendor=21c4, idProduct =0030, bcdDevice= 2.14 Feb 25 11:12:37 pop-os kernel: [ 2.118733] usb 4-1: New USB device strings: Mfr=1, Product=2, Seri alNumber=3 Feb 25 11:12:37 pop-os kernel: [ 2.118741] usb 4-1: Product: SL300 Feb 25 11:12:37 pop-os kernel: [ 2.118746] usb 4-1: Manufacturer: Lexar Feb 25 11:12:37 pop-os kernel: [ 2.118750] usb 4-1: SerialNumber: 10256000709302E1 Feb 25 11:12:37 pop-os kernel: [ 2.127653] usbcore: registered new interface driver usb-storage Feb 25 11:12:37 pop-os kernel: [ 2.132407] scsi host0: uas Feb 25 11:12:37 pop-os kernel: [ 2.132556] usbcore: registered new interface driver uas Feb 25 11:12:37 pop-os kernel: [ 2.132916] scsi 0:0:0:0: Direct-Access Lexar SL300 0214 PQ: 0 ANSI: 6 Feb 25 11:12:37 pop-os kernel: [ 2.135061] sd 0:0:0:0: Attached scsi generic sg0 type 0 Feb 25 11:12:37 pop-os kernel: [ 2.135388] sd 0:0:0:0: [sda] 2000409264 512-byte logical blocks: (1.02 TB/954 GiB) Feb 25 11:12:37 pop-os kernel: [ 2.135395] sd 0:0:0:0: [sda] 4096-byte physical blocks Feb 25 11:12:37 pop-os kernel: [ 2.135550] sd 0:0:0:0: [sda] Write Protect is off Feb 25 11:12:37 pop-os kernel: [ 2.135554] sd 0:0:0:0: [sda] Mode Sense: 5f 00 00 08 Feb 25 11:12:37 pop-os kernel: [ 2.135853] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA Feb 25 11:12:37 pop-os kernel: [ 2.136040] sd 0:0:0:0: [sda] Preferred minimum I/O size 4096 bytes Feb 25 11:12:37 pop-os kernel: [ 2.136043] sd 0:0:0:0: [sda] Optimal transfer size 33553920 bytes not a multiple of preferred minimum block size (4096 bytes) #### ls -l /media/toby/Lexar/ drwxr-xr-x 3 toby toby 262144 Mar 23 2025 LexarDataShield_1.0.39.app -rwxr-xr-x 1 toby toby 1096859 Mar 23 2025 'Lexar DataShield Quick Start Guide_Mac-20200715.pdf' -rwxr-xr-x 1 toby toby 974022 Mar 23 2025 'Lexar DataShield Quick Start Guide_Windows-20200715.pdf' -rwxr-xr-x 1 toby toby 15508480 Mar 23 2025 'Lexar DataShield_windows.exe' ################################ date Thu Feb 26 11:16:46 AM WET 2026 mount | grep sda /dev/sda1 on /media/toby/Lexar type exfat (rw,nosuid,nodev,relatime,uid=1002,gid=1002,fmask=0022,dmask=0022,iocharset=utf8,errors=remount-ro,uhelper=udisks2) sudo umount /media/toby/Lexar mount | grep sda # nothing sudo fdisk -l /dev/sda Disk /dev/sda: 953.87 GiB, 1024209543168 bytes, 2000409264 sectors Disk model: SL300 Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disklabel type: dos Disk identifier: 0x0000704c Device Boot Start End Sectors Size Id Type /dev/sda1 * 2048 2000409263 2000407216 953.9G 7 HPFS/NTFS/exFAT sudo fdisk /dev/sda Welcome to fdisk (util-linux 2.37.2). Changes will remain in memory only, until you decide to write them. Be careful before using the write command. Command (m for help): d(elete) Selected partition 1 Partition 1 has been deleted. Command (m for help): p Disk /dev/sda: 953.87 GiB, 1024209543168 bytes, 2000409264 sectors Disk model: SL300 Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disklabel type: dos Disk identifier: 0x0000704c Command (m for help): n (ew) Partition type p primary (0 primary, 0 extended, 4 free) e extended (container for logical partitions) Select (default p): p(rimary) Partition number (1-4, default 1): 1 First sector (2048-2000409263, default 2048): Last sector, +/-sectors or +/-size{K,M,G,T,P} (2048-2000409263, default 2000409263): Created a new partition 1 of type 'Linux' and of size 953.9 GiB. Partition #1 contains a exfat signature. Do you want to remove the signature? [Y]es/[N]o: Y(es) The signature will be removed by a write command. p(rint) Disk /dev/sda: 953.87 GiB, 1024209543168 bytes, 2000409264 sectors Disk model: SL300 Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disklabel type: dos Disk identifier: 0x0000704c Device Boot Start End Sectors Size Id Type /dev/sda1 2048 2000409263 2000407216 953.9G 83 Linux Filesystem/RAID signature on partition 1 will be wiped. w(rite) The partition table has been altered. Calling ioctl() to re-read partition table. Syncing disks. #### sudo mkfs.ext4 -L monolith01 /dev/sda1 Creating filesystem with 250050902 4k blocks and 62513152 inodes Filesystem UUID: 9ff0694a-5727-4e22-bc70-538b0aaff7dd Superblock backups stored on blocks: 32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208, 4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968, 102400000, 214990848 Allocating group tables: done Writing inode tables: done Creating journal (262144 blocks): done Writing superblocks and filesystem accounting information: done #### sudo e2fsck -f /dev/sda1 e2fsck 1.46.5 (30-Dec-2021) Pass 1: Checking inodes, blocks, and sizes Pass 2: Checking directory structure Pass 3: Checking directory connectivity Pass 4: Checking reference counts Pass 5: Checking group summary information monolith01: 11/62513152 files (0.0% non-contiguous), 4206240/250050902 blocks #### # disconnect monolith01 from USB # connect monolith01 to USB # Monolith01 appears in file browser, it looks to be mounted. mount | grep mono /dev/sda1 on /media/toby/monolith01 type ext4 (rw,nosuid,nodev,relatime,errors=remount-ro,uhelper=udisks2) df -h | grep sda /dev/sda1 938G 28K 891G 1% /media/toby/monolith01 ls -l /media/toby/monolith01/ drwx------ 2 root root 16384 Feb 26 11:29 lost+found