Most good flash drives do have wear leveling, see link below.
I figure if you do the math based on a life of 10000 writes at 10MB/s a 16GB drive will last years of normal use.
http://www.bress.net/blog/archives/1...rive-Last.html
Following creates a Persistent USB install of *buntu, usable on both Legacy and UEFI systems, Thanks Ublondie:
Boot Live 64 bit CD, (or 64 bit Live USB).
Plug in flash drive.
Start Partition Editor
Create 1 GB FAT32 partition, (on the left side of the bar). (size is optional, you can use excess to move files between computers)
Create a 1.5 - 31 GB ext2 partition to the right of this, label it "casper-rw". (ext3 and ext4 also work).
Create a partition in the remaining space and label it "home-rw". (optional, creates a separate home partition)
Close Partition Editor.
Un-mount and re-mount flash drive.
Start "Startup Disk Creator".
Select "Discard on shutdown".
Press "Make Startup Disk.
When Startup Disk Creator finishes,
Edit Boot/grub.cfg by adding "<space>persistent" as shown below:
Code:
file=/cdrom/preseed/ubuntu.seed boot=casper persistent quiet splash --
Next
Replace the contents of syslinux.cfg with:
Code:
default persistent
label persistent
say Booting an Ubuntu persistent session...
kernel /casper/vmlinuz.efi
append file=/cdrom/preseed/ubuntu.seed boot=casper persistent initrd=/casper/initrd.lz quiet splash noprompt --
Shutdown, remove CD/USB, reboot.
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