[Droid Eris Q&A, Help & Troubleshooting] doogald:
No, Your regular SD card is fine. You do need to enable third-party app installs; you'll find that setting in settings->applications.

Yes. You must restart the phone as if you wanted to make a phone call. Many people get too eager and try to get into Recovery before full restarting.

I can't believe that flashing Amon_RA is all terribly dangerous. There are ways to recover. In fact, I have not seen anybody report a brick after running the JCase 1-click. I'm sure that it will be fine.

You *could* do the Nand Backup before running rootme.zip. Actually, you only really need to run rootme.zip if you want to do something with root with the stock Android you have now. Some people may, for example, install the application Titanium Backup Pro (which requires root) and batch backup all user apps (menu->batch and choose to run that option from the list) and then, after installing a new custom ROM, reinstall Titanium from the market/play store and then batch restore all missing apps and data. It's a very powerful way to get the phone running all of your apps and data without reinstalling from scratch.

That brings up one more thing: if you decide to install xtrSENSE, you do not need to do a factory reset if you want to keep all of your apps and data. Of course, if you want a fresh start you may, but xtrSENSE will keep all of your apps and data and give you a faster Eris with more room for apps and data.

Also, it *is* possible to get stock recovery back, though not without losing all of you data. There is a ROM called Flashback_21v2 that will bring back stock recovery and an unrooted Eris if you wish. The phone will act as if it was never rooted. You can find it here: http://xdaforums.com/showthread.php?t=792026

That would be a good thing to keep on your phone, just in case. (Though I have to say that I am hosting the location of those files on my website and I have no plans to stop doing so, so they should be around for a while...) You'll probably be fine with the "no radio" version, but if you can spare the space on your computer, (that's a bit of a joke; the files are small), I'd download both.

In that case, you DEFINITELY want to wipe data, even with xtrSENSE!

No, you can do both. Do a Nand Backup of the phone after you root it, which will be stored on the SD card. Wipe data/factory reset and you can installa ROM and then always go back into recover and Nand restore what you backed up originally to get your phone back as it was when you ran the backup. Familiar with Norton Ghost for Windows PCs? That's what Nand backup and restore does - it takes a full snapshot of your phone as it is, and when you restore, it's as if you had just turned off your phone for a long time - it's back to the way it was at the time you made the backup. You can have multiple backups stored - as many as will fit on the SD card.

Well... xtrSENSE support apps2sd as it is, and there are scripts to turn that functionality on. The GB ROMs support using the Android-native moving of apps to sd, so I would avoid apps2sd for them.

The MD5 I have for 1click is f34fecffb985553b68d66f6ac1ef27d3

HOWEVER, can I suggest instead that you use the 1-click root here, prepared by Scary Alien: http://androidforums.com/eris-all-t...2-custom-recovery-trackball-not-required.html

If you look at the bottom of the first post, "Scenario 5", there is another version of 1click with a better version of Amon_RA (that allows you to use the hardware keys to navigate recovery, rather than just the trackball; sometimes the trackball doesn't work in the original Amon_RA). That version I guarantee is safe, and Scary Alien has the MD5 right there.