aaaaa said:
If I buy a Window 7 system, can I back up the installation DVD to
guard against the original disk becoming unreadable? If so how?
Copying the DVD-ROM shouldn't be too difficult, but it's neither here
nor there. Microsoft provides a trivially easy way to download ISOs
of Windows 7. You just need a program that can generate an SHA1 hash.
https://msdn.microsoft.com/en-us/subscriptions/securedownloads/default.aspx?pv=36:350
Windows 7 Home Premium (x86) - DVD (English)
Includes: Home Premium; 08/24/2009
2,385.99 (MB)
File Name: en_windows_7_home_premium_x86_dvd_x15-65732.iso
Date Posted (UTC): 8/6/2009 9:59:56 AM ISO/CRC: 5DF6DBA0
SHA1: CC9D8220B2179E784D85BF1EA98D2EE2190D534F
---------------------------------------------------------------------------------------
I found en_windows_7_home_premium_x86_dvd_x15-65732.iso on a torrent
(or binary NG, Web/FTP server), and generated the hash:
# MD5 checksums generated by MD5summer (
http://www.md5summer.org)
# Generated 1/13/2010 5:36:45 AM
[That particular program has a menu to choose between MD5 and SHA1
hashes before you select the file(s) to scan, but for some reason says
MD5 in the results either way.]
cc9d8220b2179e784d85bf1ea98d2ee2190d534f
*en_windows_7_home_premium_x86_dvd_x15-65732.iso
---------------------------------------------------------------------------------------
Voila. Now my friend can try out Win7 on his XP machine, if he wants
to, and decide if he actually wants to buy it. If so, he can just
order the System Builder OEM package from Newegg.com, and plug in the
Product Key when it comes, without even reinstalling. I installed
from the equivalent ISO of Professional 32-bit before Newegg was even
allowed to mail me my package, and just didn't activate till it came
in the mail.
I recently reinstalled from the official DVD-ROM, just because I now
have it and happened to want to reinstall, but let's say that a
Service Pack has been released by the time I next want to reinstall.
I'll find the MSDN ISO of Professional 32-bit with
Service Pack [number], and install with my Product Key, and go
straight to downloading the Windows Updates for the newest Service
Pack.