If you already have a Windows 7 installation disc, then you may not need to create a System Repair or Recovery Disc in Windows 7.
But if your Windows 7 has come pre-installed on your computer and you do not have an installation disk, you must create a System Repair Disc.
Doing so in Windows 7 is very easy.
Type recdisc or system repair disc in Start search and hit Enter. The following wizard will appear.

Insert media and click on Create disc.
The rest of the things will be done automatically.
You can, by the way, also access it through Control Panel > Backup and Restore > Create a system repair disc
Trivia : Compact disc is spelled with a “c” because that’s how its inventors decided it should be rendered; but a computer hard disk is spelled with a “k”.
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