This article describes how to truncate oversized .img file
Command (on linux):
# truncate -s 4000M RSE1g.img<br></p><h1>Check file size:</h1><p>ls -l --block-size=M<br></p><h1>Make a copy of the file</h1><p>cp old.img new.img
Truncate command references
truncate – shrink or extend the size of a file to the specified size
truncate OPTION… FILE…
Shrink or extend the size of each FILE to the specified size
A FILE argument that does not exist is created.
If a FILE is larger than the specified size, the extra data is lost.
If a FILE is shorter, it is extended and the extended part (hole) reads as zero bytes.
Mandatory arguments to long options are mandatory for short options too.
do not create any files
treat SIZE as number of IO blocks instead of bytes
base size on RFILE
set or adjust the file size by SIZE bytes
–help display this help and exit
output version information and exit
The SIZE argument is an integer and optional unit (example: 10K is
10*1024). Units are K,M,G,T,P,E,Z,Y (powers of 1024) or KB,MB,…
(powers of 1000).
SIZE may also be prefixed by one of the following modifying
characters: ‘+’ extend by, ‘-‘ reduce by, ‘<‘ at most, ‘>’ at least,
‘/’ round down to multiple of, ‘%’ round up to multiple of.
Changing size of the partitions on .img file
Before .img file can be truncated, make sure, that the partitions fit on the resized file.
Use GParted to resize the partitions.