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| author |   Eric Hameleers <alien@slackware.com> | 2015-12-04 14:52:45 +0100 |
|---|---|---|
| committer | Eric Hameleers <alien@slackware.com> | 2015-12-04 14:52:45 +0100 |
| commit | be97785743f5b48775a0dcbbad172a57e016adca (patch) | |
| tree | 360f89ab269076327cba650a7f739a4674721192 /make_slackware_live.sh | |
| parent | 26fd811bf5dbfcab4c30886e647e9fd366e59e9c (diff) | |
| download | liveslak-be97785743f5b48775a0dcbbad172a57e016adca.tar.gz liveslak-be97785743f5b48775a0dcbbad172a57e016adca.tar.xz | |
Make the isohybrid command more compatible with older BIOS.
Specifying heads and sectors also eliminates the warnings about using
more than 1024 cylinders.
Patch submitted by Didier Spaier.
Diffstat (limited to 'make_slackware_live.sh')
| -rwxr-xr-x | make_slackware_live.sh | 24 |
1 files changed, 21 insertions, 3 deletions
diff --git a/make_slackware_live.sh b/make_slackware_live.sh index f75504a..ad33ab6 100755 --- a/make_slackware_live.sh +++ b/make_slackware_live.sh @@ -1,6 +1,6 @@ #!/bin/bash -# $Id: make_slackware_live.sh,v 1.12 2015/12/04 13:19:46 root Exp $ +# $Id: make_slackware_live.sh,v 1.12 2015/12/04 13:19:46 root Exp root $ # Copyright 2014, 2015 Eric Hameleers, Eindhoven, NL # All rights reserved. # @@ -406,7 +406,7 @@ do case $Option in h ) cat <<-"EOH" ----------------------------------------------------------------- - $Id: make_slackware_live.sh,v 1.12 2015/12/04 13:19:46 root Exp $ + $Id: make_slackware_live.sh,v 1.12 2015/12/04 13:19:46 root Exp root $ ----------------------------------------------------------------- EOH echo "Usage:" @@ -1262,7 +1262,25 @@ mkisofs -o ${OUTPUT}/slackware${DIRSUFFIX}-live${ISOTAG}-${SL_VERSION}.iso \ # This copy is no longer needed: rm -rf ./boot cd - -isohybrid -u ${OUTPUT}/slackware${DIRSUFFIX}-live${ISOTAG}-${SL_VERSION}.iso +SIZEISO=$(stat --printf %s ${OUTPUT}/slackware${DIRSUFFIX}-live${ISOTAG}-${SL_VERSION}.iso) +# We want at most 1024 cylinders for old BIOS; also we want no more than +# 63 sectors, no more than 255 heads, which leads to a cut-over size:. +# 64 (heads) *32 (sectors) *1024 (cylinders) *512 (bytes) = 1073741824 bytes. +# However, for sizes > 8422686720 compatibility will be out the window anyway. +if [ $SIZEISO -gt 8422686720 ]; then + isohybrid -u ${OUTPUT}/slackware${DIRSUFFIX}-live${ISOTAG}-${SL_VERSION}.iso +else + if [ $SIZEISO -gt 1073741824 ]; then + # No more than 63 sectors, no more than 255 heads. + SECTORS=63 + HEADS=$(( ($SIZEISO/1024/63/512) + 2 )) + else + # The default values for isohybrid that give a size of 1073741824 bytes. + SECTORS=32 + HEADS=64 + fi + isohybrid -s $SECTORS -h $HEADS -u ${OUTPUT}/slackware${DIRSUFFIX}-live${ISOTAG}-${SL_VERSION}.iso +fi md5sum ${OUTPUT}/slackware${DIRSUFFIX}-live${ISOTAG}-${SL_VERSION}.iso \ > ${OUTPUT}/slackware${DIRSUFFIX}-live${ISOTAG}-${SL_VERSION}.iso.md5 echo "-- Live ISO image created:" |