You will want to carefully inspect the flex connecting the HDD to the logic board. [guide|392|Use this guide.]
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It may have been damaged or torn when you disconnected the battery. I would also look closely at the connectors on either end. Depending on what is damaged, it may be repairable. However, if the HDD is at fault, they can only be found "used" and are very expensive.
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It may have been damaged or torn when you disconnected the battery. I would also look closely at the connectors on either end. Depending on what is damaged, it may be repairable although it wold likely require a micro-soldering repair. However, if the HDD is at fault, they can only be found "used" and are very expensive.
I recently upgraded a Classic 7th Gen to 256GB flash memory and it was really easy. I have never tried on a 4G but [https://forums.macrumors.com/threads/ipod-classic-4th-gen-ssd-upgrade-adventure.1951122/|here is a link] that may be of interest.
You will want to carefully inspect the flex connecting the HDD to the logic board. [guide|392|Use this guide.]
It may have been damaged or torn when you disconnected the battery. I would also look closely at the connectors on either end. Depending on what is damaged, it may be repairable. However, if the HDD is at fault, they can only be found "used" and are very expensive.
I recently upgraded a Classic 7th Gen to 256GB flash memory and it was really easy. I have never tried on a 4G but [https://forums.macrumors.com/threads/ipod-classic-4th-gen-ssd-upgrade-adventure.1951122/|here is a link] that may be of interest.