path: root/flashrom.8
diff options
authorStefan Tauner <>2011-07-21 19:52:00 +0000
committerStefan Tauner <>2011-07-21 19:52:00 +0000
commitac54fbe908f9ad7e5387ac7d9e89e9cb7f323b77 (patch)
tree3fe7336cfed15633cf982d2426a7e5b6c36f4180 /flashrom.8
parent274a20d7d29b2e82c01139599df85792c9e38540 (diff)
flashrom.8: explain read accesses as part of the write operation
Corresponding to flashrom svn r1378. Signed-off-by: Stefan Tauner <> Acked-by: Paul Menzel <> Acked-by: Uwe Hermann <>
Diffstat (limited to 'flashrom.8')
1 files changed, 10 insertions, 3 deletions
diff --git a/flashrom.8 b/flashrom.8
index 5b11f6e..941a424 100644
--- a/flashrom.8
+++ b/flashrom.8
@@ -45,6 +45,13 @@ Write
into flash ROM. This will first automatically
.B erase
the chip, then write to it.
+In the process the chip is also read several times. First an in-memory backup
+is made for disaster recovery and to be able to skip regions that are
+already equal to the image file. This copy is updated along with the write
+operation. In case of erase errors it is even re-read completely. After
+writing has finished and if verification is enabled, the whole flash chip is
+read out and compared with the input image.
.B "\-n, \-\-noverify"
Skip the automatic verification of flash ROM contents after writing. Using this
@@ -541,7 +548,7 @@ unusable unless you can desolder the flash chip and have a full flash chip
backup. This is caused by the embedded controller (EC) present in many laptops,
which interacts badly with any flash attempts. This is a hardware limitation
and flashrom will attempt to detect it and abort immediately for safety reasons.
.B flashrom
is covered by the GNU General Public License (GPL), version 2. Some files are
additionally available under the GPL (version 2, or any later version).
@@ -623,6 +630,6 @@ some others, please see the flashrom svn changelog for details.
All authors can be reached via email at <>.
-This manual page was written by Uwe Hermann <>
-and Carl-Daniel Hailfinger.
+This manual page was written by Uwe Hermann <>,
+Carl-Daniel Hailfinger and others.
It is licensed under the terms of the GNU GPL (version 2 or later).
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