I too am using approved Kingston SE 16GB drives, but get failures 99% of the time like this:
admin@PA-220> request system bootstrap-usb prepare from bootstrapcontainer_012801067544_20180928.tar.gz This will format plugged-in USB and prepare it for bootstrap. This operation may take up to 15 minutes. All the data on USB will be lost. Are you sure you want to continue? (y or n) Server error : Install media mount failed, probably bad media(1)
I've created a workaround that seems to ... work.
Put your USB stick in a linux box and find the device name (/dev/sdb in this case)
[root@pan-boostrapper ~]# fdisk -l | grep Disk | grep dev | grep -v mapper Disk /dev/sda: 21.5 GB, 21474836480 bytes, 41943040 sectors Disk /dev/sdb: 15.5 GB, 15500574720 bytes, 30274560 sectors
NOTE: Use your own dev location and size from the fdisk command above
[root@pan-boostrapper ~]# parted /dev/sdb
(parted) mklabel msdos
Warning: The existing disk label on /dev/sdb will be destroyed and all data on this disk will be lost. Do you want to continue?
(parted) mkpart pri ext3 1 15.5GB
Information: You may need to update /etc/fstab.
Format the new partition:
[root@pan-boostrapper ~]# mkfs.ext3 /dev/sdb1 mke2fs 1.42.9 (28-Dec-2013) Filesystem label= OS type: Linux Block size=4096 (log=2) Fragment size=4096 (log=2) Stride=0 blocks, Stripe width=0 blocks 946560 inodes, 3784188 blocks 189209 blocks (5.00%) reserved for the super user First data block=0 Maximum filesystem blocks=3875536896 116 block groups 32768 blocks per group, 32768 fragments per group 8160 inodes per group Superblock backups stored on blocks: 32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208 Allocating group tables: done Writing inode tables: done Creating journal (32768 blocks): done Writing superblocks and filesystem accounting information: done
[root@pan-boostrapper ~]# mount /dev/sdb1 /mnt
Make directories and put the init-cfg.txt and bootstrap.xml in them
[root@pan-boostrapper ~]# ls -l pan-bootstrap/* pan-bootstrap/config: total 16 -rwx------. 1 root root 9016 Sep 30 11:41 bootstrap.xml -rwx------. 1 root root 243 Sep 30 11:41 init-cfg.txt pan-bootstrap/license: total 0 pan-bootstrap/log: total 0
And copy stuff in there
[root@pan-boostrapper ~]# cp -r pan-bootstrap/* /mnt/
umount and off you go
[root@pan-boostrapper ~]# umount /mnt
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