07-15-2023, 02:08 PM
Has anyone tried to replace stock eMMC (16Gb or 32Gb) with a bigger eMMC (in a phone repair shop for example)? Is it possible? What models are compatible?
(07-15-2023, 02:08 PM)EuvzO8 Wrote: [ -> ]Has anyone tried to replace stock eMMC (16Gb or 32Gb) with a bigger eMMC (in a phone repair shop for example)? Is it possible? What models are compatible?
(08-13-2023, 04:49 AM)fxc Wrote: [ -> ](07-15-2023, 02:08 PM)EuvzO8 Wrote: [ -> ]Has anyone tried to replace stock eMMC (16Gb or 32Gb) with a bigger eMMC (in a phone repair shop for example)? Is it possible? What models are compatible?
That would not make sense IMO. The eMMC is soldered with ball grid array and would be quite involved and costly to swap it. MicroSD cards cost almost nothing and you can adjust your mount points to transfer data (such as personal files, applications etc.) to it.
(08-13-2023, 11:25 PM)EuvzO8 Wrote: [ -> ](08-13-2023, 04:49 AM)fxc Wrote: [ -> ](07-15-2023, 02:08 PM)EuvzO8 Wrote: [ -> ]Has anyone tried to replace stock eMMC (16Gb or 32Gb) with a bigger eMMC (in a phone repair shop for example)? Is it possible? What models are compatible?
That would not make sense IMO. The eMMC is soldered with ball grid array and would be quite involved and costly to swap it. MicroSD cards cost almost nothing and you can adjust your mount points to transfer data (such as personal files, applications etc.) to it.
The main reason is speed. SD cards are noticeably slower on OG PP (even with faster cards). than eMMC. With vccq mod eMMC speeds can be around 125MB/s, but SD card achieves approximately 23 MB/s. This is five times slower.
https://wiki.pine64.org/wiki/PinePhone_F...d_SD_cards?
Quote:root@mobian:/home/mobian# hdparm -t -T /dev/mmcblk0
/dev/mmcblk0:
Timing cached reads: 802 MB in 2.00 seconds = 400.36 MB/sec
Timing buffered disk reads: 66 MB in 3.07 seconds = 21.51 MB/sec
root@mobian:/home/mobian# hdparm -t -T /dev/mmcblk0
Quote:mobian@mobian:~$ sudo hdparm -t -T /dev/mmcblk2
/dev/mmcblk2:
Timing cached reads: 942 MB in 2.00 seconds = 470.48 MB/sec
Timing buffered disk reads: 242 MB in 3.02 seconds = 80.08 MB/sec
Quote:root@mobian:/home/mobian# hdparm -t -T /dev/mmcblk2
/dev/mmcblk2:
Timing cached reads: 894 MB in 2.00 seconds = 446.58 MB/sec
Timing buffered disk reads: 358 MB in 3.01 seconds = 118.98 MB/sec
Quote:You can put stuff relevant for speed on the eMMC, like people used to do with their system on SSDs when the capacity was low. Everything else makes no reasonable economical sense.
(08-14-2023, 02:14 AM)EuvzO8 Wrote: [ -> ][quote pid="119203" dateline="1691994961"]
The eMMC is slightly faster, can be twice as fast. The vccq mod is not advised, only works with some eMMCs, is highly risky and you make all images incompatible, so I would estimate there are less than a dozen people in total who made the mod, out of tens of thousands of sold PinePhones
Quote:root@mobian:/home/mobian# hdparm -t -T /dev/mmcblk0
/dev/mmcblk0:
Timing cached reads: 802 MB in 2.00 seconds = 400.36 MB/sec
Timing buffered disk reads: 66 MB in 3.07 seconds = 21.51 MB/sec
root@mobian:/home/mobian# hdparm -t -T /dev/mmcblk0
Quote:mobian@mobian:~$ sudo hdparm -t -T /dev/mmcblk2
/dev/mmcblk2:
Timing cached reads: 942 MB in 2.00 seconds = 470.48 MB/sec
Timing buffered disk reads: 242 MB in 3.02 seconds = 80.08 MB/sec
Quote:root@mobian:/home/mobian# hdparm -t -T /dev/mmcblk2
/dev/mmcblk2:
Timing cached reads: 894 MB in 2.00 seconds = 446.58 MB/sec
Timing buffered disk reads: 358 MB in 3.01 seconds = 118.98 MB/sec
Quote:You can put stuff relevant for speed on the eMMC, like people used to do with their system on SSDs when the capacity was low. Everything else makes no reasonable economical sense.