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What is ClockworkMOD Recovery and what is it for?

I'm trying to use the Rom Manager to partition my SD card (so I can increase the storage size for my apps, since it natively installs to the first available partition which is known as "internal" and the rest of the sd card is "sd"), however, it asks me to install the ClockworkMod Recovery first. If I choose to install, will this install to the emmc or the sd card? I remember reading somewhere that installing ClockworkMod will void the Nook's warranty.


ClockworkMod Recovery is an custom recovery for Android phones, which is installed on the recovery partition on the internal memory. AFAIK flashing CWM doesn't void the warranty, but rooting does.

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  • Flashing voids your warranty. – Matthew Read Aug 21 '11 at 16:17
  • While this doesn't answer the text of the question, it answers the title... no reason to downvote it... – Nathan Fellman Aug 21 '11 at 17:52
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    Since you can't flash a recovery without rooting first (AFAIK), this seems… borderline recursive :) – Jemus42 Aug 23 '11 at 21:39
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    rooting doesn't necessarily void your warranty. I've un-rooted and returned a device back to the manufacturer (Samsung) for repair and was fixed without complaint or charge – Michael Sep 20 '11 at 17:14
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    @Michael No, that just means Samsung couldn't tell you had rooted and thus didn't realize you had voided your warranty. Jemus42, you certainly can flash without root on some devices :) – Matthew Read Oct 20 '11 at 20:07

"Flash" is a verb, meaning to write to flash memory or to any kind of ROM. The verb is most often used in connection with firmware.

CWM normally it overwrites the default recovery, but I believe it can go on the SD card when dual-booting ROMs, which might be the case for the Nook since I don't believe you overwrite the original firmware. As you noted, it will void your warranty if installed device-side.

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  • I'm pretty new to this. I've followed this guide: forum.xda-developers.com/showthread.php?t=1000957 - I probably won't void the warranty since I'm installing it to the SD, if I choose to install via the rom manager. Right? – diesel Aug 21 '11 at 21:56

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